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Resync new repository with old repo r5166
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -0,0 +1,143 @@
|
||||
#
|
||||
# For a description of the syntax of this configuration file,
|
||||
# see misc/tools/kconfig-language.txt.
|
||||
#
|
||||
|
||||
comment "FreeModbus"
|
||||
|
||||
config MODBUS
|
||||
bool "Modbus support via FreeModBus"
|
||||
default n
|
||||
|
||||
config MB_ASCII_ENABLED
|
||||
bool "Modbus ASCII support"
|
||||
depends on MODBUS
|
||||
default y
|
||||
|
||||
config MB_RTU_ENABLED
|
||||
bool "Modbus RTU support"
|
||||
depends on MODBUS
|
||||
default y
|
||||
|
||||
config MB_TCP_ENABLED
|
||||
bool "Modbus TCP support"
|
||||
depends on MODBUS
|
||||
default y
|
||||
|
||||
config MB_ASCII_TIMEOUT_SEC
|
||||
int "Character timeout"
|
||||
depends on MB_ASCII_ENABLED
|
||||
default 1
|
||||
---help---
|
||||
Character timeout value for Modbus ASCII
|
||||
|
||||
The character timeout value is not fixed for Modbus ASCII and is therefore
|
||||
a configuration option. It should be set to the maximum expected delay
|
||||
time of the network.
|
||||
|
||||
config MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS
|
||||
int "Timeout to wait before sending"
|
||||
depends on MB_ASCII_ENABLED
|
||||
default 0
|
||||
---help---
|
||||
Timeout to wait in ASCII prior to enabling transmitter
|
||||
|
||||
If defined the function calls vMBPortSerialDelay with the argument
|
||||
MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS to allow for a delay before
|
||||
the serial transmitter is enabled. This is required because some
|
||||
targets are so fast that there is no time between receiving and
|
||||
transmitting the frame. If the master is to slow with enabling its
|
||||
receiver then he will not receive the response correctly.
|
||||
|
||||
config MB_FUNC_HANDLERS_MAX
|
||||
int "Maximum number of Modbus functions"
|
||||
depends on MODBUS
|
||||
default 16
|
||||
---help---
|
||||
Maximum number of Modbus functions codes the protocol stack should support.
|
||||
|
||||
The maximum number of supported Modbus functions must be greater than
|
||||
the sum of all enabled functions in this file and custom function
|
||||
handlers. If set to small adding more functions will fail.
|
||||
|
||||
config MB_FUNC_OTHER_REP_SLAVEID_BUF
|
||||
int "Size of Slave ID report buffer"
|
||||
depends on MB_FUNC_OTHER_REP_SLAVEID_ENABLED
|
||||
default 32
|
||||
---help---
|
||||
Number of bytes which should be allocated for the Report Slave ID command.
|
||||
|
||||
This number limits the maximum size of the additional segment in the
|
||||
report slave id function. See eMBSetSlaveID() for more information on
|
||||
how to set this value. It is only used if MB_FUNC_OTHER_REP_SLAVEID_ENABLED
|
||||
is set to 1.
|
||||
|
||||
config MB_FUNC_OTHER_REP_SLAVEID_ENABLED
|
||||
bool "Report Slave ID function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Report Slave ID function should be enabled.
|
||||
|
||||
config MB_FUNC_READ_INPUT_ENABLED
|
||||
bool "Read Input Registers function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Read Input Registers function should be enabled.
|
||||
|
||||
config MB_FUNC_READ_HOLDING_ENABLED
|
||||
bool "Read Holding Registers function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Read Holding Registers function should be enabled.
|
||||
|
||||
config MB_FUNC_WRITE_HOLDING_ENABLED
|
||||
bool "Write Single Register function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Write Single Register function should be enabled.
|
||||
|
||||
config MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
|
||||
bool "Write Multiple registers function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Write Multiple registers function should be enabled.
|
||||
|
||||
config MB_FUNC_READ_COILS_ENABLED
|
||||
bool "Read Coils function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Read Coils function should be enabled.
|
||||
|
||||
config MB_FUNC_WRITE_COIL_ENABLED
|
||||
bool "Write Coils function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Write Coils function should be enabled.
|
||||
|
||||
config MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED
|
||||
bool "Write Multiple Coils function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Write Multiple Coils function should be enabled.
|
||||
|
||||
config MB_FUNC_READ_DISCRETE_INPUTS_ENABLED
|
||||
bool "Read Discrete Inputs function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Read Discrete Inputs function should be enabled.
|
||||
|
||||
config MB_FUNC_READWRITE_HOLDING_ENABLED
|
||||
bool "Read/Write Multiple Registers function"
|
||||
depends on MODBUS
|
||||
default y
|
||||
---help---
|
||||
If the Read/Write Multiple Registers function should be enabled.
|
||||
@@ -0,0 +1,40 @@
|
||||
############################################################################
|
||||
# apps/modbus/Make.defs
|
||||
# Adds selected applications to apps/ build
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
ifeq ($(CONFIG_MODBUS),y)
|
||||
CONFIGURED_APPS += modbus
|
||||
endif
|
||||
|
||||
@@ -0,0 +1,116 @@
|
||||
############################################################################
|
||||
# apps/modbus/Makefile
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
-include $(TOPDIR)/.config
|
||||
-include $(TOPDIR)/Make.defs
|
||||
include $(APPDIR)/Make.defs
|
||||
|
||||
# FreeModBus Library
|
||||
|
||||
ASRCS =
|
||||
CSRCS =
|
||||
|
||||
ifeq ($(CONFIG_MODBUS),y)
|
||||
|
||||
CSRCS += mb.c
|
||||
DEPPATH = --dep-path .
|
||||
VPATH = .
|
||||
|
||||
ifeq ($(WINTOOL),y)
|
||||
INCDIROPT = -w
|
||||
endif
|
||||
|
||||
include ascii/Make.defs
|
||||
include functions/Make.defs
|
||||
include nuttx/Make.defs
|
||||
include rtu/Make.defs
|
||||
include tcp/Make.defs
|
||||
|
||||
endif
|
||||
|
||||
AOBJS = $(ASRCS:.S=$(OBJEXT))
|
||||
COBJS = $(CSRCS:.c=$(OBJEXT))
|
||||
|
||||
SRCS = $(ASRCS) $(CSRCS)
|
||||
OBJS = $(AOBJS) $(COBJS)
|
||||
|
||||
ifeq ($(WINTOOL),y)
|
||||
BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
|
||||
else
|
||||
BIN = "$(APPDIR)/libapps$(LIBEXT)"
|
||||
endif
|
||||
|
||||
# Build targets
|
||||
|
||||
all: .built
|
||||
.PHONY: context .depend depend clean distclean
|
||||
|
||||
ifeq ($(CONFIG_MODBUS),y)
|
||||
|
||||
$(AOBJS): %$(OBJEXT): %.S
|
||||
$(call ASSEMBLE, $<, $@)
|
||||
|
||||
$(COBJS): %$(OBJEXT): %.c
|
||||
$(call COMPILE, $<, $@)
|
||||
endif
|
||||
|
||||
.built: $(OBJS)
|
||||
ifeq ($(CONFIG_MODBUS),y)
|
||||
@( for obj in $(OBJS) ; do \
|
||||
$(call ARCHIVE, $(BIN), $${obj}); \
|
||||
done ; )
|
||||
@touch .built
|
||||
endif
|
||||
|
||||
context:
|
||||
|
||||
.depend: Makefile $(SRCS)
|
||||
ifeq ($(CONFIG_MODBUS),y)
|
||||
@$(MKDEP) $(DEPPATH) \
|
||||
$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
|
||||
@touch $@
|
||||
endif
|
||||
|
||||
depend: .depend
|
||||
|
||||
clean:
|
||||
@rm -f *.o *~ .*.swp .built
|
||||
$(call CLEAN)
|
||||
|
||||
distclean: clean
|
||||
@rm -f Make.dep .depend
|
||||
|
||||
-include Make.dep
|
||||
|
||||
@@ -0,0 +1,117 @@
|
||||
apps/modbus README
|
||||
==================
|
||||
|
||||
This directory contains a port of last open source version of FreeModBus
|
||||
(BSD license). The code in this directory is a subset of FreeModBus version
|
||||
1.5.0 (June 6, 2010) that can be downloaded in its entirety from http://developer.berlios.de/project/showfiles.php?group_id=6120.
|
||||
|
||||
Directory Structure/Relation to freemodbus-v1.5.0
|
||||
-------------------------------------------------
|
||||
|
||||
The original FreeModBus download consists of several directories. This
|
||||
subset takes only the contents of one directory, modbus/, that implements
|
||||
the core modbus logic and integrates that directory into the NuttX build
|
||||
system. The mapping between freemodbus-v1.5.0 and the nuttx directories
|
||||
is shown below:
|
||||
|
||||
--------------------------- ----------------------------------------------
|
||||
freemodbus-v1.5.0 Nuttx
|
||||
--------------------------- ----------------------------------------------
|
||||
All top level .txt files Not included
|
||||
demo/ Not included. This directory contains demo
|
||||
and porting code for a variety of platforms.
|
||||
The NuttX demo was ported from the the LINUX
|
||||
demo in this director and can be found at
|
||||
apps/examples/modbus.
|
||||
doc/ Note included. This directory contains Doxygen
|
||||
support files.
|
||||
modbus/ Included in its entirety in various locations:
|
||||
ascii apps/modbus/ascii
|
||||
functions apps/modbus/functions
|
||||
include apps/include/modbus
|
||||
mb.c apps/modbus/mb.c
|
||||
rtu apps/modbus/rtu
|
||||
tcp apps/modbus/tcp
|
||||
tools/ Note included. This directory contain Doxygen
|
||||
tools.
|
||||
--------------------------- ----------------------------------------------
|
||||
|
||||
So this directory is equivalent to the freemodbus-v1.5.0/modbus
|
||||
directory except that (1) it may include modifications for the integration
|
||||
with NuttX and (2) the modbus/include directory was moved to apps/modbus.
|
||||
|
||||
The original, unmodified freemodbus-v1.5.0 was checked in as SVN revision
|
||||
4960.
|
||||
|
||||
The other directory here, nuttx/, implements the NuttX modbus interface.
|
||||
It derives from the freemodbus-v1.5.0/demo/LINUX/port directory.
|
||||
|
||||
Configuration Options
|
||||
=====================
|
||||
|
||||
In the original freemodbus-v1.5.0 release, the FreeModBus configuration
|
||||
was controlled by the header file mbconfig.h. This header file was
|
||||
eliminated (post revision 4960) and the FreeModBus configuration
|
||||
was integrated into the NuttX configuration system.
|
||||
|
||||
The NuttX-named configuration options that are available include:
|
||||
|
||||
CONFIG_MODBUS - General ModBus support
|
||||
CONFIG_MB_ASCII_ENABLED - Modbus ASCII support
|
||||
CONFIG_MB_RTU_ENABLED - Modbus RTU support
|
||||
CONFIG_MB_TCP_ENABLED - Modbus TCP support
|
||||
CONFIG_MB_ASCII_TIMEOUT_SEC - Character timeout value for Modbus ASCII. The
|
||||
character timeout value is not fixed for Modbus ASCII and is therefore
|
||||
a configuration option. It should be set to the maximum expected delay
|
||||
time of the network. Default 1
|
||||
CONFIG_MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS - Timeout to wait in ASCII prior
|
||||
to enabling transmitter. If defined the function calls
|
||||
vMBPortSerialDelay with the argument CONFIG_MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS
|
||||
to allow for a delay before the serial transmitter is enabled. This is
|
||||
required because some targets are so fast that there is no time between
|
||||
receiving and transmitting the frame. If the master is to slow with
|
||||
enabling its receiver then he will not receive the response correctly.
|
||||
CONFIG_MB_FUNC_HANDLERS_MAX - Maximum number of Modbus functions codes the
|
||||
protocol stack should support. The maximum number of supported Modbus
|
||||
functions must be greater than the sum of all enabled functions in this
|
||||
file and custom function handlers. If set to small adding more functions
|
||||
will fail.
|
||||
CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF - Number of bytes which should be
|
||||
allocated for the Report Slave ID command. This number limits the
|
||||
maximum size of the additional segment in the report slave id function.
|
||||
See eMBSetSlaveID() for more information on how to set this value. It
|
||||
is only used if CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED is set to 1.
|
||||
CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED - If the Report Slave ID
|
||||
function should be enabled.
|
||||
CONFIG_MB_FUNC_READ_INPUT_ENABLED - If the Read Input Registers function
|
||||
should be enabled.
|
||||
CONFIG_MB_FUNC_READ_HOLDING_ENABLED - If the Read Holding Registers
|
||||
function should be enabled.
|
||||
CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED - If the Write Single Register
|
||||
function should be enabled.
|
||||
CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED - If the Write Multiple
|
||||
registers function should be enabled.
|
||||
CONFIG_MB_FUNC_READ_COILS_ENABLED - If the Read Coils function should
|
||||
be enabled.
|
||||
CONFIG_MB_FUNC_WRITE_COIL_ENABLED - If the Write Coils function should
|
||||
be enabled.
|
||||
CONFIG_MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED - If the Write Multiple Coils
|
||||
function should be enabled.
|
||||
CONFIG_MB_FUNC_READ_DISCRETE_INPUTS_ENABLED - If the Read Discrete Inputs
|
||||
function should be enabled.
|
||||
CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED - If the Read/Write Multiple
|
||||
Registers function should be enabled.
|
||||
|
||||
See also other serial settings, in particular:
|
||||
|
||||
CONFIG_SERIAL_TERMIOS - Serial driver supports termios.h interfaces (tcsetattr,
|
||||
tcflush, etc.). If this is not defined, then the terminal settings (baud,
|
||||
parity, etc.) are not configurable at runtime; serial streams will not be
|
||||
flushed when closed.
|
||||
|
||||
Note
|
||||
====
|
||||
|
||||
The developer of FreeModBus, Christian Walter, is still developing Modbus
|
||||
libraries, although they are now commercial. See
|
||||
http://www.embedded-solutions.at/ for further information.
|
||||
@@ -0,0 +1,44 @@
|
||||
############################################################################
|
||||
# apps/modbus/functions/Make.defs
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
ifeq ($(CONFIG_MB_ASCII_ENABLED),y)
|
||||
|
||||
CSRCS += mbascii.c
|
||||
|
||||
DEPPATH += --dep-path ascii
|
||||
VPATH += :ascii
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/ascii}
|
||||
|
||||
endif
|
||||
@@ -0,0 +1,487 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbascii.c,v 1.17 2010/06/06 13:47:07 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
#include "mbascii.h"
|
||||
#include "mbcrc.h"
|
||||
|
||||
#ifdef CONFIG_MB_ASCII_ENABLED
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_ASCII_DEFAULT_CR '\r' /*!< Default CR character for Modbus ASCII. */
|
||||
#define MB_ASCII_DEFAULT_LF '\n' /*!< Default LF character for Modbus ASCII. */
|
||||
#define MB_SER_PDU_SIZE_MIN 3 /*!< Minimum size of a Modbus ASCII frame. */
|
||||
#define MB_SER_PDU_SIZE_MAX 256 /*!< Maximum size of a Modbus ASCII frame. */
|
||||
#define MB_SER_PDU_SIZE_LRC 1 /*!< Size of LRC field in PDU. */
|
||||
#define MB_SER_PDU_ADDR_OFF 0 /*!< Offset of slave address in Ser-PDU. */
|
||||
#define MB_SER_PDU_PDU_OFF 1 /*!< Offset of Modbus-PDU in Ser-PDU. */
|
||||
|
||||
/* ----------------------- Type definitions ---------------------------------*/
|
||||
typedef enum
|
||||
{
|
||||
STATE_RX_IDLE, /*!< Receiver is in idle state. */
|
||||
STATE_RX_RCV, /*!< Frame is beeing received. */
|
||||
STATE_RX_WAIT_EOF /*!< Wait for End of Frame. */
|
||||
} eMBRcvState;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
STATE_TX_IDLE, /*!< Transmitter is in idle state. */
|
||||
STATE_TX_START, /*!< Starting transmission (':' sent). */
|
||||
STATE_TX_DATA, /*!< Sending of data (Address, Data, LRC). */
|
||||
STATE_TX_END, /*!< End of transmission. */
|
||||
STATE_TX_NOTIFY /*!< Notify sender that the frame has been sent. */
|
||||
} eMBSndState;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
BYTE_HIGH_NIBBLE, /*!< Character for high nibble of byte. */
|
||||
BYTE_LOW_NIBBLE /*!< Character for low nibble of byte. */
|
||||
} eMBBytePos;
|
||||
|
||||
/* ----------------------- Static functions ---------------------------------*/
|
||||
static uint8_t prvucMBint8_t2BIN( uint8_t ucCharacter );
|
||||
|
||||
static uint8_t prvucMBBIN2int8_t( uint8_t ucByte );
|
||||
|
||||
static uint8_t prvucMBLRC( uint8_t * pucFrame, uint16_t usLen );
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
static volatile eMBSndState eSndState;
|
||||
static volatile eMBRcvState eRcvState;
|
||||
|
||||
/* We reuse the Modbus RTU buffer because only one buffer is needed and the
|
||||
* RTU buffer is bigger. */
|
||||
extern volatile uint8_t ucRTUBuf[];
|
||||
static volatile uint8_t *ucASCIIBuf = ucRTUBuf;
|
||||
|
||||
static volatile uint16_t usRcvBufferPos;
|
||||
static volatile eMBBytePos eBytePos;
|
||||
|
||||
static volatile uint8_t *pucSndBufferCur;
|
||||
static volatile uint16_t usSndBufferCount;
|
||||
|
||||
static volatile uint8_t ucLRC;
|
||||
static volatile uint8_t ucMBLFCharacter;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
eMBErrorCode
|
||||
eMBASCIIInit( uint8_t ucSlaveAddress, uint8_t ucPort, speed_t ulBaudRate, eMBParity eParity )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
( void )ucSlaveAddress;
|
||||
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
ucMBLFCharacter = MB_ASCII_DEFAULT_LF;
|
||||
|
||||
if( xMBPortSerialInit( ucPort, ulBaudRate, 7, eParity ) != true )
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
else if( xMBPortTimersInit( CONFIG_MB_ASCII_TIMEOUT_SEC * 20000UL ) != true )
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
void
|
||||
eMBASCIIStart( void )
|
||||
{
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
vMBPortSerialEnable( true, false );
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
|
||||
/* No special startup required for ASCII. */
|
||||
( void )xMBPortEventPost( EV_READY );
|
||||
}
|
||||
|
||||
void
|
||||
eMBASCIIStop( void )
|
||||
{
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
vMBPortSerialEnable( false, false );
|
||||
vMBPortTimersDisable( );
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBASCIIReceive( uint8_t * pucRcvAddress, uint8_t ** pucFrame, uint16_t * pusLength )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
ASSERT( usRcvBufferPos < MB_SER_PDU_SIZE_MAX );
|
||||
|
||||
/* Length and CRC check */
|
||||
if( ( usRcvBufferPos >= MB_SER_PDU_SIZE_MIN )
|
||||
&& ( prvucMBLRC( ( uint8_t * ) ucASCIIBuf, usRcvBufferPos ) == 0 ) )
|
||||
{
|
||||
/* Save the address field. All frames are passed to the upper layed
|
||||
* and the decision if a frame is used is done there.
|
||||
*/
|
||||
*pucRcvAddress = ucASCIIBuf[MB_SER_PDU_ADDR_OFF];
|
||||
|
||||
/* Total length of Modbus-PDU is Modbus-Serial-Line-PDU minus
|
||||
* size of address field and CRC checksum.
|
||||
*/
|
||||
*pusLength = ( uint16_t )( usRcvBufferPos - MB_SER_PDU_PDU_OFF - MB_SER_PDU_SIZE_LRC );
|
||||
|
||||
/* Return the start of the Modbus PDU to the caller. */
|
||||
*pucFrame = ( uint8_t * ) & ucASCIIBuf[MB_SER_PDU_PDU_OFF];
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBASCIISend( uint8_t ucSlaveAddress, const uint8_t * pucFrame, uint16_t usLength )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint8_t usLRC;
|
||||
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
/* Check if the receiver is still in idle state. If not we where too
|
||||
* slow with processing the received frame and the master sent another
|
||||
* frame on the network. We have to abort sending the frame.
|
||||
*/
|
||||
if( eRcvState == STATE_RX_IDLE )
|
||||
{
|
||||
/* First byte before the Modbus-PDU is the slave address. */
|
||||
pucSndBufferCur = ( uint8_t * ) pucFrame - 1;
|
||||
usSndBufferCount = 1;
|
||||
|
||||
/* Now copy the Modbus-PDU into the Modbus-Serial-Line-PDU. */
|
||||
pucSndBufferCur[MB_SER_PDU_ADDR_OFF] = ucSlaveAddress;
|
||||
usSndBufferCount += usLength;
|
||||
|
||||
/* Calculate LRC checksum for Modbus-Serial-Line-PDU. */
|
||||
usLRC = prvucMBLRC( ( uint8_t * ) pucSndBufferCur, usSndBufferCount );
|
||||
ucASCIIBuf[usSndBufferCount++] = usLRC;
|
||||
|
||||
/* Activate the transmitter. */
|
||||
eSndState = STATE_TX_START;
|
||||
vMBPortSerialEnable( false, true );
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBASCIIReceiveFSM( void )
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
uint8_t ucByte;
|
||||
uint8_t ucResult;
|
||||
|
||||
ASSERT( eSndState == STATE_TX_IDLE );
|
||||
|
||||
( void )xMBPortSerialGetByte( ( int8_t * ) & ucByte );
|
||||
switch ( eRcvState )
|
||||
{
|
||||
/* A new character is received. If the character is a ':' the input
|
||||
* buffer is cleared. A CR-character signals the end of the data
|
||||
* block. Other characters are part of the data block and their
|
||||
* ASCII value is converted back to a binary representation.
|
||||
*/
|
||||
case STATE_RX_RCV:
|
||||
/* Enable timer for character timeout. */
|
||||
vMBPortTimersEnable( );
|
||||
if( ucByte == ':' )
|
||||
{
|
||||
/* Empty receive buffer. */
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
usRcvBufferPos = 0;
|
||||
}
|
||||
else if( ucByte == MB_ASCII_DEFAULT_CR )
|
||||
{
|
||||
eRcvState = STATE_RX_WAIT_EOF;
|
||||
}
|
||||
else
|
||||
{
|
||||
ucResult = prvucMBint8_t2BIN( ucByte );
|
||||
switch ( eBytePos )
|
||||
{
|
||||
/* High nibble of the byte comes first. We check for
|
||||
* a buffer overflow here. */
|
||||
case BYTE_HIGH_NIBBLE:
|
||||
if( usRcvBufferPos < MB_SER_PDU_SIZE_MAX )
|
||||
{
|
||||
ucASCIIBuf[usRcvBufferPos] = ( uint8_t )( ucResult << 4 );
|
||||
eBytePos = BYTE_LOW_NIBBLE;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* not handled in Modbus specification but seems
|
||||
* a resonable implementation. */
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
/* Disable previously activated timer because of error state. */
|
||||
vMBPortTimersDisable( );
|
||||
}
|
||||
break;
|
||||
|
||||
case BYTE_LOW_NIBBLE:
|
||||
ucASCIIBuf[usRcvBufferPos] |= ucResult;
|
||||
usRcvBufferPos++;
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case STATE_RX_WAIT_EOF:
|
||||
if( ucByte == ucMBLFCharacter )
|
||||
{
|
||||
/* Disable character timeout timer because all characters are
|
||||
* received. */
|
||||
vMBPortTimersDisable( );
|
||||
/* Receiver is again in idle state. */
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
|
||||
/* Notify the caller of eMBASCIIReceive that a new frame
|
||||
* was received. */
|
||||
xNeedPoll = xMBPortEventPost( EV_FRAME_RECEIVED );
|
||||
}
|
||||
else if( ucByte == ':' )
|
||||
{
|
||||
/* Empty receive buffer and back to receive state. */
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
usRcvBufferPos = 0;
|
||||
eRcvState = STATE_RX_RCV;
|
||||
|
||||
/* Enable timer for character timeout. */
|
||||
vMBPortTimersEnable( );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Frame is not okay. Delete entire frame. */
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
}
|
||||
break;
|
||||
|
||||
case STATE_RX_IDLE:
|
||||
if( ucByte == ':' )
|
||||
{
|
||||
/* Enable timer for character timeout. */
|
||||
vMBPortTimersEnable( );
|
||||
/* Reset the input buffers to store the frame. */
|
||||
usRcvBufferPos = 0;;
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
eRcvState = STATE_RX_RCV;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return xNeedPoll;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBASCIITransmitFSM( void )
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
uint8_t ucByte;
|
||||
|
||||
ASSERT( eRcvState == STATE_RX_IDLE );
|
||||
switch ( eSndState )
|
||||
{
|
||||
/* Start of transmission. The start of a frame is defined by sending
|
||||
* the character ':'. */
|
||||
case STATE_TX_START:
|
||||
ucByte = ':';
|
||||
xMBPortSerialPutByte( ( int8_t )ucByte );
|
||||
eSndState = STATE_TX_DATA;
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
break;
|
||||
|
||||
/* Send the data block. Each data byte is encoded as a character hex
|
||||
* stream with the high nibble sent first and the low nibble sent
|
||||
* last. If all data bytes are exhausted we send a '\r' character
|
||||
* to end the transmission. */
|
||||
case STATE_TX_DATA:
|
||||
if( usSndBufferCount > 0 )
|
||||
{
|
||||
switch ( eBytePos )
|
||||
{
|
||||
case BYTE_HIGH_NIBBLE:
|
||||
ucByte = prvucMBBIN2int8_t( ( uint8_t )( *pucSndBufferCur >> 4 ) );
|
||||
xMBPortSerialPutByte( ( int8_t ) ucByte );
|
||||
eBytePos = BYTE_LOW_NIBBLE;
|
||||
break;
|
||||
|
||||
case BYTE_LOW_NIBBLE:
|
||||
ucByte = prvucMBBIN2int8_t( ( uint8_t )( *pucSndBufferCur & 0x0F ) );
|
||||
xMBPortSerialPutByte( ( int8_t )ucByte );
|
||||
pucSndBufferCur++;
|
||||
eBytePos = BYTE_HIGH_NIBBLE;
|
||||
usSndBufferCount--;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
xMBPortSerialPutByte( MB_ASCII_DEFAULT_CR );
|
||||
eSndState = STATE_TX_END;
|
||||
}
|
||||
break;
|
||||
|
||||
/* Finish the frame by sending a LF character. */
|
||||
case STATE_TX_END:
|
||||
xMBPortSerialPutByte( ( int8_t )ucMBLFCharacter );
|
||||
/* We need another state to make sure that the CR character has
|
||||
* been sent. */
|
||||
eSndState = STATE_TX_NOTIFY;
|
||||
break;
|
||||
|
||||
/* Notify the task which called eMBASCIISend that the frame has
|
||||
* been sent. */
|
||||
case STATE_TX_NOTIFY:
|
||||
eSndState = STATE_TX_IDLE;
|
||||
xNeedPoll = xMBPortEventPost( EV_FRAME_SENT );
|
||||
|
||||
/* Disable transmitter. This prevents another transmit buffer
|
||||
* empty interrupt. */
|
||||
vMBPortSerialEnable( true, false );
|
||||
eSndState = STATE_TX_IDLE;
|
||||
break;
|
||||
|
||||
/* We should not get a transmitter event if the transmitter is in
|
||||
* idle state. */
|
||||
case STATE_TX_IDLE:
|
||||
/* enable receiver/disable transmitter. */
|
||||
vMBPortSerialEnable( true, false );
|
||||
break;
|
||||
}
|
||||
|
||||
return xNeedPoll;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBASCIITimerT1SExpired( void )
|
||||
{
|
||||
switch ( eRcvState )
|
||||
{
|
||||
/* If we have a timeout we go back to the idle state and wait for
|
||||
* the next frame.
|
||||
*/
|
||||
case STATE_RX_RCV:
|
||||
case STATE_RX_WAIT_EOF:
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
break;
|
||||
|
||||
default:
|
||||
ASSERT( ( eRcvState == STATE_RX_RCV ) || ( eRcvState == STATE_RX_WAIT_EOF ) );
|
||||
break;
|
||||
}
|
||||
vMBPortTimersDisable( );
|
||||
|
||||
/* no context switch required. */
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
static uint8_t
|
||||
prvucMBint8_t2BIN( uint8_t ucCharacter )
|
||||
{
|
||||
if( ( ucCharacter >= '0' ) && ( ucCharacter <= '9' ) )
|
||||
{
|
||||
return ( uint8_t )( ucCharacter - '0' );
|
||||
}
|
||||
else if( ( ucCharacter >= 'A' ) && ( ucCharacter <= 'F' ) )
|
||||
{
|
||||
return ( uint8_t )( ucCharacter - 'A' + 0x0A );
|
||||
}
|
||||
else
|
||||
{
|
||||
return 0xFF;
|
||||
}
|
||||
}
|
||||
|
||||
static uint8_t
|
||||
prvucMBBIN2int8_t( uint8_t ucByte )
|
||||
{
|
||||
if( ucByte <= 0x09 )
|
||||
{
|
||||
return ( uint8_t )( '0' + ucByte );
|
||||
}
|
||||
else if( ( ucByte >= 0x0A ) && ( ucByte <= 0x0F ) )
|
||||
{
|
||||
return ( uint8_t )( ucByte - 0x0A + 'A' );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Programming error. */
|
||||
ASSERT( 0 );
|
||||
}
|
||||
return '0';
|
||||
}
|
||||
|
||||
|
||||
static uint8_t
|
||||
prvucMBLRC( uint8_t * pucFrame, uint16_t usLen )
|
||||
{
|
||||
uint8_t ucLocalLRC = 0; /* LRC char initialized */
|
||||
|
||||
while( usLen-- )
|
||||
{
|
||||
ucLocalLRC += *pucFrame++; /* Add buffer byte without carry */
|
||||
}
|
||||
|
||||
/* Return twos complement */
|
||||
ucLocalLRC = ( uint8_t ) ( -( ( int8_t ) ucLocalLRC ) );
|
||||
return ucLocalLRC;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,56 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbascii.h,v 1.8 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
#ifndef _MB_ASCII_H
|
||||
#define _MB_ASCII_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_BEGIN_EXTERN_C
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_ASCII_ENABLED
|
||||
eMBErrorCode eMBASCIIInit( uint8_t slaveAddress, uint8_t ucPort,
|
||||
speed_t ulBaudRate, eMBParity eParity );
|
||||
void eMBASCIIStart( void );
|
||||
void eMBASCIIStop( void );
|
||||
|
||||
eMBErrorCode eMBASCIIReceive( uint8_t * pucRcvAddress, uint8_t ** pucFrame,
|
||||
uint16_t * pusLength );
|
||||
eMBErrorCode eMBASCIISend( uint8_t slaveAddress, const uint8_t * pucFrame,
|
||||
uint16_t usLength );
|
||||
bool xMBASCIIReceiveFSM( void );
|
||||
bool xMBASCIITransmitFSM( void );
|
||||
bool xMBASCIITimerT1SExpired( void );
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_END_EXTERN_C
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,41 @@
|
||||
############################################################################
|
||||
# apps/modbus/nuttx/Make.defs
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
CSRCS += mbfunccoils.c mbfuncdiag.c mbfuncdisc.c mbfuncholding.c
|
||||
CSRCS += mbfuncinput.c mbfuncother.c mbutils.c
|
||||
|
||||
DEPPATH += --dep-path functions
|
||||
VPATH += :functions
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/functions}
|
||||
@@ -0,0 +1,270 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbfunccoils.c,v 1.8 2007/02/18 23:47:16 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF )
|
||||
#define MB_PDU_FUNC_READ_COILCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_READ_SIZE ( 4 )
|
||||
#define MB_PDU_FUNC_READ_COILCNT_MAX ( 0x07D0 )
|
||||
|
||||
#define MB_PDU_FUNC_WRITE_ADDR_OFF ( MB_PDU_DATA_OFF )
|
||||
#define MB_PDU_FUNC_WRITE_VALUE_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_WRITE_SIZE ( 4 )
|
||||
|
||||
#define MB_PDU_FUNC_WRITE_MUL_ADDR_OFF ( MB_PDU_DATA_OFF )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_COILCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF ( MB_PDU_DATA_OFF + 4 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_VALUES_OFF ( MB_PDU_DATA_OFF + 5 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_SIZE_MIN ( 5 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_COILCNT_MAX ( 0x07B0 )
|
||||
|
||||
/* ----------------------- Static functions ---------------------------------*/
|
||||
eMBException prveMBError2Exception( eMBErrorCode eErrorCode );
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_READ_COILS_ENABLED
|
||||
|
||||
eMBException
|
||||
eMBFuncReadCoils( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usCoilCount;
|
||||
uint8_t ucNBytes;
|
||||
uint8_t *pucFrameCur;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_READ_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usCoilCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_COILCNT_OFF] << 8 );
|
||||
usCoilCount |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_COILCNT_OFF + 1] );
|
||||
|
||||
/* Check if the number of registers to read is valid. If not
|
||||
* return Modbus illegal data value exception.
|
||||
*/
|
||||
if( ( usCoilCount >= 1 ) &&
|
||||
( usCoilCount < MB_PDU_FUNC_READ_COILCNT_MAX ) )
|
||||
{
|
||||
/* Set the current PDU data pointer to the beginning. */
|
||||
pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
|
||||
*usLen = MB_PDU_FUNC_OFF;
|
||||
|
||||
/* First byte contains the function code. */
|
||||
*pucFrameCur++ = MB_FUNC_READ_COILS;
|
||||
*usLen += 1;
|
||||
|
||||
/* Test if the quantity of coils is a multiple of 8. If not last
|
||||
* byte is only partially field with unused coils set to zero. */
|
||||
if( ( usCoilCount & 0x0007 ) != 0 )
|
||||
{
|
||||
ucNBytes = ( uint8_t )( usCoilCount / 8 + 1 );
|
||||
}
|
||||
else
|
||||
{
|
||||
ucNBytes = ( uint8_t )( usCoilCount / 8 );
|
||||
}
|
||||
*pucFrameCur++ = ucNBytes;
|
||||
*usLen += 1;
|
||||
|
||||
eRegStatus =
|
||||
eMBRegCoilsCB( pucFrameCur, usRegAddress, usCoilCount,
|
||||
MB_REG_READ );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The response contains the function code, the starting address
|
||||
* and the quantity of registers. We reuse the old values in the
|
||||
* buffer because they are still valid. */
|
||||
*usLen += ucNBytes;;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid read coil register request because the length
|
||||
* is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_COIL_ENABLED
|
||||
eMBException
|
||||
eMBFuncWriteCoil( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint8_t ucBuf[2];
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_WRITE_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
if( ( pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF + 1] == 0x00 ) &&
|
||||
( ( pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF] == 0xFF ) ||
|
||||
( pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF] == 0x00 ) ) )
|
||||
{
|
||||
ucBuf[1] = 0;
|
||||
if( pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF] == 0xFF )
|
||||
{
|
||||
ucBuf[0] = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
ucBuf[0] = 0;
|
||||
}
|
||||
eRegStatus =
|
||||
eMBRegCoilsCB( &ucBuf[0], usRegAddress, 1, MB_REG_WRITE );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid write coil register request because the length
|
||||
* is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED
|
||||
eMBException
|
||||
eMBFuncWriteMultipleCoils( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usCoilCnt;
|
||||
uint8_t ucByteCount;
|
||||
uint8_t ucByteCountVerify;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen > ( MB_PDU_FUNC_WRITE_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usCoilCnt = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_COILCNT_OFF] << 8 );
|
||||
usCoilCnt |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_COILCNT_OFF + 1] );
|
||||
|
||||
ucByteCount = pucFrame[MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF];
|
||||
|
||||
/* Compute the number of expected bytes in the request. */
|
||||
if( ( usCoilCnt & 0x0007 ) != 0 )
|
||||
{
|
||||
ucByteCountVerify = ( uint8_t )( usCoilCnt / 8 + 1 );
|
||||
}
|
||||
else
|
||||
{
|
||||
ucByteCountVerify = ( uint8_t )( usCoilCnt / 8 );
|
||||
}
|
||||
|
||||
if( ( usCoilCnt >= 1 ) &&
|
||||
( usCoilCnt <= MB_PDU_FUNC_WRITE_MUL_COILCNT_MAX ) &&
|
||||
( ucByteCountVerify == ucByteCount ) )
|
||||
{
|
||||
eRegStatus =
|
||||
eMBRegCoilsCB( &pucFrame[MB_PDU_FUNC_WRITE_MUL_VALUES_OFF],
|
||||
usRegAddress, usCoilCnt, MB_REG_WRITE );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The response contains the function code, the starting address
|
||||
* and the quantity of registers. We reuse the old values in the
|
||||
* buffer because they are still valid. */
|
||||
*usLen = MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid write coil register request because the length
|
||||
* is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,29 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbfuncdiag.c,v 1.3 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
@@ -0,0 +1,123 @@
|
||||
/*
|
||||
* FreeRTOS Modbus Libary: A Modbus serial implementation for FreeRTOS
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF )
|
||||
#define MB_PDU_FUNC_READ_DISCCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_READ_SIZE ( 4 )
|
||||
#define MB_PDU_FUNC_READ_DISCCNT_MAX ( 0x07D0 )
|
||||
|
||||
/* ----------------------- Static functions ---------------------------------*/
|
||||
eMBException prveMBError2Exception( eMBErrorCode eErrorCode );
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_READ_COILS_ENABLED
|
||||
|
||||
eMBException
|
||||
eMBFuncReadDiscreteInputs( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usDiscreteCnt;
|
||||
uint8_t ucNBytes;
|
||||
uint8_t *pucFrameCur;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_READ_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usDiscreteCnt = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_DISCCNT_OFF] << 8 );
|
||||
usDiscreteCnt |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_DISCCNT_OFF + 1] );
|
||||
|
||||
/* Check if the number of registers to read is valid. If not
|
||||
* return Modbus illegal data value exception.
|
||||
*/
|
||||
if( ( usDiscreteCnt >= 1 ) &&
|
||||
( usDiscreteCnt < MB_PDU_FUNC_READ_DISCCNT_MAX ) )
|
||||
{
|
||||
/* Set the current PDU data pointer to the beginning. */
|
||||
pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
|
||||
*usLen = MB_PDU_FUNC_OFF;
|
||||
|
||||
/* First byte contains the function code. */
|
||||
*pucFrameCur++ = MB_FUNC_READ_DISCRETE_INPUTS;
|
||||
*usLen += 1;
|
||||
|
||||
/* Test if the quantity of coils is a multiple of 8. If not last
|
||||
* byte is only partially field with unused coils set to zero. */
|
||||
if( ( usDiscreteCnt & 0x0007 ) != 0 )
|
||||
{
|
||||
ucNBytes = ( uint8_t ) ( usDiscreteCnt / 8 + 1 );
|
||||
}
|
||||
else
|
||||
{
|
||||
ucNBytes = ( uint8_t ) ( usDiscreteCnt / 8 );
|
||||
}
|
||||
*pucFrameCur++ = ucNBytes;
|
||||
*usLen += 1;
|
||||
|
||||
eRegStatus =
|
||||
eMBRegDiscreteCB( pucFrameCur, usRegAddress, usDiscreteCnt );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The response contains the function code, the starting address
|
||||
* and the quantity of registers. We reuse the old values in the
|
||||
* buffer because they are still valid. */
|
||||
*usLen += ucNBytes;;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid read coil register request because the length
|
||||
* is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,308 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbfuncholding.c,v 1.12 2007/02/18 23:48:22 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF + 0)
|
||||
#define MB_PDU_FUNC_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_READ_SIZE ( 4 )
|
||||
#define MB_PDU_FUNC_READ_REGCNT_MAX ( 0x007D )
|
||||
|
||||
#define MB_PDU_FUNC_WRITE_ADDR_OFF ( MB_PDU_DATA_OFF + 0)
|
||||
#define MB_PDU_FUNC_WRITE_VALUE_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_WRITE_SIZE ( 4 )
|
||||
|
||||
#define MB_PDU_FUNC_WRITE_MUL_ADDR_OFF ( MB_PDU_DATA_OFF + 0 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF ( MB_PDU_DATA_OFF + 4 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_VALUES_OFF ( MB_PDU_DATA_OFF + 5 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_SIZE_MIN ( 5 )
|
||||
#define MB_PDU_FUNC_WRITE_MUL_REGCNT_MAX ( 0x0078 )
|
||||
|
||||
#define MB_PDU_FUNC_READWRITE_READ_ADDR_OFF ( MB_PDU_DATA_OFF + 0 )
|
||||
#define MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF ( MB_PDU_DATA_OFF + 4 )
|
||||
#define MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF ( MB_PDU_DATA_OFF + 6 )
|
||||
#define MB_PDU_FUNC_READWRITE_BYTECNT_OFF ( MB_PDU_DATA_OFF + 8 )
|
||||
#define MB_PDU_FUNC_READWRITE_WRITE_VALUES_OFF ( MB_PDU_DATA_OFF + 9 )
|
||||
#define MB_PDU_FUNC_READWRITE_SIZE_MIN ( 9 )
|
||||
|
||||
/* ----------------------- Static functions ---------------------------------*/
|
||||
eMBException prveMBError2Exception( eMBErrorCode eErrorCode );
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED
|
||||
|
||||
eMBException
|
||||
eMBFuncWriteHoldingRegister( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_WRITE_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
/* Make callback to update the value. */
|
||||
eRegStatus = eMBRegHoldingCB( &pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF],
|
||||
usRegAddress, 1, MB_REG_WRITE );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid request because the length is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
|
||||
eMBException
|
||||
eMBFuncWriteMultipleHoldingRegister( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usRegCount;
|
||||
uint8_t ucRegByteCount;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen >= ( MB_PDU_FUNC_WRITE_MUL_SIZE_MIN + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usRegCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF] << 8 );
|
||||
usRegCount |= ( uint16_t )( pucFrame[MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF + 1] );
|
||||
|
||||
ucRegByteCount = pucFrame[MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF];
|
||||
|
||||
if( ( usRegCount >= 1 ) &&
|
||||
( usRegCount <= MB_PDU_FUNC_WRITE_MUL_REGCNT_MAX ) &&
|
||||
( ucRegByteCount == ( uint8_t ) ( 2 * usRegCount ) ) )
|
||||
{
|
||||
/* Make callback to update the register values. */
|
||||
eRegStatus =
|
||||
eMBRegHoldingCB( &pucFrame[MB_PDU_FUNC_WRITE_MUL_VALUES_OFF],
|
||||
usRegAddress, usRegCount, MB_REG_WRITE );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The response contains the function code, the starting
|
||||
* address and the quantity of registers. We reuse the
|
||||
* old values in the buffer because they are still valid.
|
||||
*/
|
||||
*usLen = MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid request because the length is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_READ_HOLDING_ENABLED
|
||||
|
||||
eMBException
|
||||
eMBFuncReadHoldingRegister( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usRegCount;
|
||||
uint8_t *pucFrameCur;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_READ_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usRegCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF] << 8 );
|
||||
usRegCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] );
|
||||
|
||||
/* Check if the number of registers to read is valid. If not
|
||||
* return Modbus illegal data value exception.
|
||||
*/
|
||||
if( ( usRegCount >= 1 ) && ( usRegCount <= MB_PDU_FUNC_READ_REGCNT_MAX ) )
|
||||
{
|
||||
/* Set the current PDU data pointer to the beginning. */
|
||||
pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
|
||||
*usLen = MB_PDU_FUNC_OFF;
|
||||
|
||||
/* First byte contains the function code. */
|
||||
*pucFrameCur++ = MB_FUNC_READ_HOLDING_REGISTER;
|
||||
*usLen += 1;
|
||||
|
||||
/* Second byte in the response contain the number of bytes. */
|
||||
*pucFrameCur++ = ( uint8_t ) ( usRegCount * 2 );
|
||||
*usLen += 1;
|
||||
|
||||
/* Make callback to fill the buffer. */
|
||||
eRegStatus = eMBRegHoldingCB( pucFrameCur, usRegAddress, usRegCount, MB_REG_READ );
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
*usLen += usRegCount * 2;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid request because the length is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED
|
||||
|
||||
eMBException
|
||||
eMBFuncReadWriteMultipleHoldingRegister( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegReadAddress;
|
||||
uint16_t usRegReadCount;
|
||||
uint16_t usRegWriteAddress;
|
||||
uint16_t usRegWriteCount;
|
||||
uint8_t ucRegWriteByteCount;
|
||||
uint8_t *pucFrameCur;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen >= ( MB_PDU_FUNC_READWRITE_SIZE_MIN + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegReadAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_READ_ADDR_OFF] << 8U );
|
||||
usRegReadAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_READ_ADDR_OFF + 1] );
|
||||
usRegReadAddress++;
|
||||
|
||||
usRegReadCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF] << 8U );
|
||||
usRegReadCount |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF + 1] );
|
||||
|
||||
usRegWriteAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF] << 8U );
|
||||
usRegWriteAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF + 1] );
|
||||
usRegWriteAddress++;
|
||||
|
||||
usRegWriteCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF] << 8U );
|
||||
usRegWriteCount |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF + 1] );
|
||||
|
||||
ucRegWriteByteCount = pucFrame[MB_PDU_FUNC_READWRITE_BYTECNT_OFF];
|
||||
|
||||
if( ( usRegReadCount >= 1 ) && ( usRegReadCount <= 0x7D ) &&
|
||||
( usRegWriteCount >= 1 ) && ( usRegWriteCount <= 0x79 ) &&
|
||||
( ( 2 * usRegWriteCount ) == ucRegWriteByteCount ) )
|
||||
{
|
||||
/* Make callback to update the register values. */
|
||||
eRegStatus = eMBRegHoldingCB( &pucFrame[MB_PDU_FUNC_READWRITE_WRITE_VALUES_OFF],
|
||||
usRegWriteAddress, usRegWriteCount, MB_REG_WRITE );
|
||||
|
||||
if( eRegStatus == MB_ENOERR )
|
||||
{
|
||||
/* Set the current PDU data pointer to the beginning. */
|
||||
pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
|
||||
*usLen = MB_PDU_FUNC_OFF;
|
||||
|
||||
/* First byte contains the function code. */
|
||||
*pucFrameCur++ = MB_FUNC_READWRITE_MULTIPLE_REGISTERS;
|
||||
*usLen += 1;
|
||||
|
||||
/* Second byte in the response contain the number of bytes. */
|
||||
*pucFrameCur++ = ( uint8_t ) ( usRegReadCount * 2 );
|
||||
*usLen += 1;
|
||||
|
||||
/* Make the read callback. */
|
||||
eRegStatus =
|
||||
eMBRegHoldingCB( pucFrameCur, usRegReadAddress, usRegReadCount, MB_REG_READ );
|
||||
if( eRegStatus == MB_ENOERR )
|
||||
{
|
||||
*usLen += 2 * usRegReadCount;
|
||||
}
|
||||
}
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,122 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbfuncinput.c,v 1.10 2007/09/12 10:15:56 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF )
|
||||
#define MB_PDU_FUNC_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
|
||||
#define MB_PDU_FUNC_READ_SIZE ( 4 )
|
||||
#define MB_PDU_FUNC_READ_REGCNT_MAX ( 0x007D )
|
||||
|
||||
#define MB_PDU_FUNC_READ_RSP_BYTECNT_OFF ( MB_PDU_DATA_OFF )
|
||||
|
||||
/* ----------------------- Static functions ---------------------------------*/
|
||||
eMBException prveMBError2Exception( eMBErrorCode eErrorCode );
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_READ_INPUT_ENABLED
|
||||
eMBException
|
||||
eMBFuncReadInputRegister( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
uint16_t usRegAddress;
|
||||
uint16_t usRegCount;
|
||||
uint8_t *pucFrameCur;
|
||||
|
||||
eMBException eStatus = MB_EX_NONE;
|
||||
eMBErrorCode eRegStatus;
|
||||
|
||||
if( *usLen == ( MB_PDU_FUNC_READ_SIZE + MB_PDU_SIZE_MIN ) )
|
||||
{
|
||||
usRegAddress = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF] << 8 );
|
||||
usRegAddress |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] );
|
||||
usRegAddress++;
|
||||
|
||||
usRegCount = ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF] << 8 );
|
||||
usRegCount |= ( uint16_t )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] );
|
||||
|
||||
/* Check if the number of registers to read is valid. If not
|
||||
* return Modbus illegal data value exception.
|
||||
*/
|
||||
if( ( usRegCount >= 1 )
|
||||
&& ( usRegCount < MB_PDU_FUNC_READ_REGCNT_MAX ) )
|
||||
{
|
||||
/* Set the current PDU data pointer to the beginning. */
|
||||
pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
|
||||
*usLen = MB_PDU_FUNC_OFF;
|
||||
|
||||
/* First byte contains the function code. */
|
||||
*pucFrameCur++ = MB_FUNC_READ_INPUT_REGISTER;
|
||||
*usLen += 1;
|
||||
|
||||
/* Second byte in the response contain the number of bytes. */
|
||||
*pucFrameCur++ = ( uint8_t )( usRegCount * 2 );
|
||||
*usLen += 1;
|
||||
|
||||
eRegStatus =
|
||||
eMBRegInputCB( pucFrameCur, usRegAddress, usRegCount );
|
||||
|
||||
/* If an error occured convert it into a Modbus exception. */
|
||||
if( eRegStatus != MB_ENOERR )
|
||||
{
|
||||
eStatus = prveMBError2Exception( eRegStatus );
|
||||
}
|
||||
else
|
||||
{
|
||||
*usLen += usRegCount * 2;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Can't be a valid read input register request because the length
|
||||
* is incorrect. */
|
||||
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,88 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbfuncother.c,v 1.8 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
#ifdef CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
static uint8_t ucMBSlaveID[CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF];
|
||||
static uint16_t usMBSlaveIDLen;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
eMBErrorCode
|
||||
eMBSetSlaveID( uint8_t ucSlaveID, bool xIsRunning,
|
||||
uint8_t const *pucAdditional, uint16_t usAdditionalLen )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
/* the first byte and second byte in the buffer is reserved for
|
||||
* the parameter ucSlaveID and the running flag. The rest of
|
||||
* the buffer is available for additional data. */
|
||||
if( usAdditionalLen + 2 < CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF )
|
||||
{
|
||||
usMBSlaveIDLen = 0;
|
||||
ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
|
||||
ucMBSlaveID[usMBSlaveIDLen++] = ( uint8_t )( xIsRunning ? 0xFF : 0x00 );
|
||||
if( usAdditionalLen > 0 )
|
||||
{
|
||||
memcpy( &ucMBSlaveID[usMBSlaveIDLen], pucAdditional,
|
||||
( size_t )usAdditionalLen );
|
||||
usMBSlaveIDLen += usAdditionalLen;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_ENORES;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBException
|
||||
eMBFuncReportSlaveID( uint8_t * pucFrame, uint16_t * usLen )
|
||||
{
|
||||
memcpy( &pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], ( size_t )usMBSlaveIDLen );
|
||||
*usLen = ( uint16_t )( MB_PDU_DATA_OFF + usMBSlaveIDLen );
|
||||
return MB_EX_NONE;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,143 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbutils.c,v 1.6 2007/02/18 23:49:07 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define BITS_uint8_t 8U
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
void
|
||||
xMBUtilSetBits( uint8_t * ucByteBuf, uint16_t usBitOffset, uint8_t ucNBits,
|
||||
uint8_t ucValue )
|
||||
{
|
||||
uint16_t usWordBuf;
|
||||
uint16_t usMask;
|
||||
uint16_t usByteOffset;
|
||||
uint16_t usNPreBits;
|
||||
uint16_t usValue = ucValue;
|
||||
|
||||
ASSERT( ucNBits <= 8 );
|
||||
ASSERT( ( size_t )BITS_uint8_t == sizeof( uint8_t ) * 8 );
|
||||
|
||||
/* Calculate byte offset for first byte containing the bit values starting
|
||||
* at usBitOffset. */
|
||||
usByteOffset = ( uint16_t )( ( usBitOffset ) / BITS_uint8_t );
|
||||
|
||||
/* How many bits precede our bits to set. */
|
||||
usNPreBits = ( uint16_t )( usBitOffset - usByteOffset * BITS_uint8_t );
|
||||
|
||||
/* Move bit field into position over bits to set */
|
||||
usValue <<= usNPreBits;
|
||||
|
||||
/* Prepare a mask for setting the new bits. */
|
||||
usMask = ( uint16_t )( ( 1 << ( uint16_t ) ucNBits ) - 1 );
|
||||
usMask <<= usBitOffset - usByteOffset * BITS_uint8_t;
|
||||
|
||||
/* copy bits into temporary storage. */
|
||||
usWordBuf = ucByteBuf[usByteOffset];
|
||||
usWordBuf |= ucByteBuf[usByteOffset + 1] << BITS_uint8_t;
|
||||
|
||||
/* Zero out bit field bits and then or value bits into them. */
|
||||
usWordBuf = ( uint16_t )( ( usWordBuf & ( ~usMask ) ) | usValue );
|
||||
|
||||
/* move bits back into storage */
|
||||
ucByteBuf[usByteOffset] = ( uint8_t )( usWordBuf & 0xFF );
|
||||
ucByteBuf[usByteOffset + 1] = ( uint8_t )( usWordBuf >> BITS_uint8_t );
|
||||
}
|
||||
|
||||
uint8_t
|
||||
xMBUtilGetBits( uint8_t * ucByteBuf, uint16_t usBitOffset, uint8_t ucNBits )
|
||||
{
|
||||
uint16_t usWordBuf;
|
||||
uint16_t usMask;
|
||||
uint16_t usByteOffset;
|
||||
uint16_t usNPreBits;
|
||||
|
||||
/* Calculate byte offset for first byte containing the bit values starting
|
||||
* at usBitOffset. */
|
||||
usByteOffset = ( uint16_t )( ( usBitOffset ) / BITS_uint8_t );
|
||||
|
||||
/* How many bits precede our bits to set. */
|
||||
usNPreBits = ( uint16_t )( usBitOffset - usByteOffset * BITS_uint8_t );
|
||||
|
||||
/* Prepare a mask for setting the new bits. */
|
||||
usMask = ( uint16_t )( ( 1 << ( uint16_t ) ucNBits ) - 1 );
|
||||
|
||||
/* copy bits into temporary storage. */
|
||||
usWordBuf = ucByteBuf[usByteOffset];
|
||||
usWordBuf |= ucByteBuf[usByteOffset + 1] << BITS_uint8_t;
|
||||
|
||||
/* throw away unneeded bits. */
|
||||
usWordBuf >>= usNPreBits;
|
||||
|
||||
/* mask away bits above the requested bitfield. */
|
||||
usWordBuf &= usMask;
|
||||
|
||||
return ( uint8_t ) usWordBuf;
|
||||
}
|
||||
|
||||
eMBException
|
||||
prveMBError2Exception( eMBErrorCode eErrorCode )
|
||||
{
|
||||
eMBException eStatus;
|
||||
|
||||
switch ( eErrorCode )
|
||||
{
|
||||
case MB_ENOERR:
|
||||
eStatus = MB_EX_NONE;
|
||||
break;
|
||||
|
||||
case MB_ENOREG:
|
||||
eStatus = MB_EX_ILLEGAL_DATA_ADDRESS;
|
||||
break;
|
||||
|
||||
case MB_ETIMEDOUT:
|
||||
eStatus = MB_EX_SLAVE_BUSY;
|
||||
break;
|
||||
|
||||
default:
|
||||
eStatus = MB_EX_SLAVE_DEVICE_FAILURE;
|
||||
break;
|
||||
}
|
||||
|
||||
return eStatus;
|
||||
}
|
||||
@@ -0,0 +1,415 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mb.c,v 1.28 2010/06/06 13:54:40 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbproto.h>
|
||||
#include <apps/modbus/mbfunc.h>
|
||||
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
#ifdef CONFIG_MB_RTU_ENABLED
|
||||
#include "mbrtu.h"
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_ASCII_ENABLED
|
||||
#include "mbascii.h"
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MB_TCP_ENABLED
|
||||
#include "mbtcp.h"
|
||||
#endif
|
||||
|
||||
#ifndef MB_PORT_HAS_CLOSE
|
||||
#define MB_PORT_HAS_CLOSE 0
|
||||
#endif
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
|
||||
static uint8_t ucMBAddress;
|
||||
static eMBMode eMBCurrentMode;
|
||||
|
||||
static enum
|
||||
{
|
||||
STATE_ENABLED,
|
||||
STATE_DISABLED,
|
||||
STATE_NOT_INITIALIZED
|
||||
} eMBState = STATE_NOT_INITIALIZED;
|
||||
|
||||
/* Functions pointer which are initialized in eMBInit( ). Depending on the
|
||||
* mode (RTU or ASCII) the are set to the correct implementations.
|
||||
*/
|
||||
static peMBFrameSend peMBFrameSendCur;
|
||||
static pvMBFrameStart pvMBFrameStartCur;
|
||||
static pvMBFrameStop pvMBFrameStopCur;
|
||||
static peMBFrameReceive peMBFrameReceiveCur;
|
||||
static pvMBFrameClose pvMBFrameCloseCur;
|
||||
|
||||
/* Callback functions required by the porting layer. They are called when
|
||||
* an external event has happend which includes a timeout or the reception
|
||||
* or transmission of a character.
|
||||
*/
|
||||
bool( *pxMBFrameCBByteReceived ) ( void );
|
||||
bool( *pxMBFrameCBTransmitterEmpty ) ( void );
|
||||
bool( *pxMBPortCBTimerExpired ) ( void );
|
||||
|
||||
bool( *pxMBFrameCBReceiveFSMCur ) ( void );
|
||||
bool( *pxMBFrameCBTransmitFSMCur ) ( void );
|
||||
|
||||
/* An array of Modbus functions handlers which associates Modbus function
|
||||
* codes with implementing functions.
|
||||
*/
|
||||
static xMBFunctionHandler xFuncHandlers[CONFIG_MB_FUNC_HANDLERS_MAX] = {
|
||||
#ifdef CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED
|
||||
{MB_FUNC_OTHER_REPORT_SLAVEID, eMBFuncReportSlaveID},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_READ_INPUT_ENABLE
|
||||
{MB_FUNC_READ_INPUT_REGISTER, eMBFuncReadInputRegister},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_READ_HOLDING_ENABLED
|
||||
{MB_FUNC_READ_HOLDING_REGISTER, eMBFuncReadHoldingRegister},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
|
||||
{MB_FUNC_WRITE_MULTIPLE_REGISTERS, eMBFuncWriteMultipleHoldingRegister},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED
|
||||
{MB_FUNC_WRITE_REGISTER, eMBFuncWriteHoldingRegister},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED
|
||||
{MB_FUNC_READWRITE_MULTIPLE_REGISTERS, eMBFuncReadWriteMultipleHoldingRegister},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_READ_COILS_ENABLED
|
||||
{MB_FUNC_READ_COILS, eMBFuncReadCoils},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_COIL_ENABLED
|
||||
{MB_FUNC_WRITE_SINGLE_COIL, eMBFuncWriteCoil},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED
|
||||
{MB_FUNC_WRITE_MULTIPLE_COILS, eMBFuncWriteMultipleCoils},
|
||||
#endif
|
||||
#ifdef CONFIG_MB_FUNC_READ_DISCRETE_INPUTS_ENABLED
|
||||
{MB_FUNC_READ_DISCRETE_INPUTS, eMBFuncReadDiscreteInputs},
|
||||
#endif
|
||||
};
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
eMBErrorCode
|
||||
eMBInit( eMBMode eMode, uint8_t ucSlaveAddress, uint8_t ucPort, speed_t ulBaudRate, eMBParity eParity )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
/* check preconditions */
|
||||
if( ( ucSlaveAddress == MB_ADDRESS_BROADCAST ) ||
|
||||
( ucSlaveAddress < MB_ADDRESS_MIN ) || ( ucSlaveAddress > MB_ADDRESS_MAX ) )
|
||||
{
|
||||
eStatus = MB_EINVAL;
|
||||
}
|
||||
else
|
||||
{
|
||||
ucMBAddress = ucSlaveAddress;
|
||||
|
||||
switch ( eMode )
|
||||
{
|
||||
#ifdef CONFIG_MB_RTU_ENABLED
|
||||
case MB_RTU:
|
||||
pvMBFrameStartCur = eMBRTUStart;
|
||||
pvMBFrameStopCur = eMBRTUStop;
|
||||
peMBFrameSendCur = eMBRTUSend;
|
||||
peMBFrameReceiveCur = eMBRTUReceive;
|
||||
pvMBFrameCloseCur = MB_PORT_HAS_CLOSE ? vMBPortClose : NULL;
|
||||
pxMBFrameCBByteReceived = xMBRTUReceiveFSM;
|
||||
pxMBFrameCBTransmitterEmpty = xMBRTUTransmitFSM;
|
||||
pxMBPortCBTimerExpired = xMBRTUTimerT35Expired;
|
||||
|
||||
eStatus = eMBRTUInit( ucMBAddress, ucPort, ulBaudRate, eParity );
|
||||
break;
|
||||
#endif
|
||||
#ifdef CONFIG_MB_ASCII_ENABLED
|
||||
case MB_ASCII:
|
||||
pvMBFrameStartCur = eMBASCIIStart;
|
||||
pvMBFrameStopCur = eMBASCIIStop;
|
||||
peMBFrameSendCur = eMBASCIISend;
|
||||
peMBFrameReceiveCur = eMBASCIIReceive;
|
||||
pvMBFrameCloseCur = MB_PORT_HAS_CLOSE ? vMBPortClose : NULL;
|
||||
pxMBFrameCBByteReceived = xMBASCIIReceiveFSM;
|
||||
pxMBFrameCBTransmitterEmpty = xMBASCIITransmitFSM;
|
||||
pxMBPortCBTimerExpired = xMBASCIITimerT1SExpired;
|
||||
|
||||
eStatus = eMBASCIIInit( ucMBAddress, ucPort, ulBaudRate, eParity );
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
eStatus = MB_EINVAL;
|
||||
}
|
||||
|
||||
if( eStatus == MB_ENOERR )
|
||||
{
|
||||
if( !xMBPortEventInit( ) )
|
||||
{
|
||||
/* port dependent event module initalization failed. */
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
else
|
||||
{
|
||||
eMBCurrentMode = eMode;
|
||||
eMBState = STATE_DISABLED;
|
||||
}
|
||||
}
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MB_TCP_ENABLED
|
||||
eMBErrorCode
|
||||
eMBTCPInit( uint16_t ucTCPPort )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
if( ( eStatus = eMBTCPDoInit( ucTCPPort ) ) != MB_ENOERR )
|
||||
{
|
||||
eMBState = STATE_DISABLED;
|
||||
}
|
||||
else if( !xMBPortEventInit( ) )
|
||||
{
|
||||
/* Port dependent event module initalization failed. */
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
else
|
||||
{
|
||||
pvMBFrameStartCur = eMBTCPStart;
|
||||
pvMBFrameStopCur = eMBTCPStop;
|
||||
peMBFrameReceiveCur = eMBTCPReceive;
|
||||
peMBFrameSendCur = eMBTCPSend;
|
||||
pvMBFrameCloseCur = MB_PORT_HAS_CLOSE ? vMBTCPPortClose : NULL;
|
||||
ucMBAddress = MB_TCP_PSEUDO_ADDRESS;
|
||||
eMBCurrentMode = MB_TCP;
|
||||
eMBState = STATE_DISABLED;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
#endif
|
||||
|
||||
eMBErrorCode
|
||||
eMBRegisterCB( uint8_t ucFunctionCode, pxMBFunctionHandler pxHandler )
|
||||
{
|
||||
int i;
|
||||
eMBErrorCode eStatus;
|
||||
|
||||
if( ( 0 < ucFunctionCode ) && ( ucFunctionCode <= 127 ) )
|
||||
{
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
if( pxHandler != NULL )
|
||||
{
|
||||
for( i = 0; i < CONFIG_MB_FUNC_HANDLERS_MAX; i++ )
|
||||
{
|
||||
if( ( xFuncHandlers[i].pxHandler == NULL ) ||
|
||||
( xFuncHandlers[i].pxHandler == pxHandler ) )
|
||||
{
|
||||
xFuncHandlers[i].ucFunctionCode = ucFunctionCode;
|
||||
xFuncHandlers[i].pxHandler = pxHandler;
|
||||
break;
|
||||
}
|
||||
}
|
||||
eStatus = ( i != CONFIG_MB_FUNC_HANDLERS_MAX ) ? MB_ENOERR : MB_ENORES;
|
||||
}
|
||||
else
|
||||
{
|
||||
for( i = 0; i < CONFIG_MB_FUNC_HANDLERS_MAX; i++ )
|
||||
{
|
||||
if( xFuncHandlers[i].ucFunctionCode == ucFunctionCode )
|
||||
{
|
||||
xFuncHandlers[i].ucFunctionCode = 0;
|
||||
xFuncHandlers[i].pxHandler = NULL;
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* Remove can't fail. */
|
||||
eStatus = MB_ENOERR;
|
||||
}
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EINVAL;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
|
||||
eMBErrorCode
|
||||
eMBClose( void )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
if( eMBState == STATE_DISABLED )
|
||||
{
|
||||
if( pvMBFrameCloseCur != NULL )
|
||||
{
|
||||
pvMBFrameCloseCur( );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EILLSTATE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBEnable( void )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
if( eMBState == STATE_DISABLED )
|
||||
{
|
||||
/* Activate the protocol stack. */
|
||||
pvMBFrameStartCur( );
|
||||
eMBState = STATE_ENABLED;
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EILLSTATE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBDisable( void )
|
||||
{
|
||||
eMBErrorCode eStatus;
|
||||
|
||||
if( eMBState == STATE_ENABLED )
|
||||
{
|
||||
pvMBFrameStopCur( );
|
||||
eMBState = STATE_DISABLED;
|
||||
eStatus = MB_ENOERR;
|
||||
}
|
||||
else if( eMBState == STATE_DISABLED )
|
||||
{
|
||||
eStatus = MB_ENOERR;
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EILLSTATE;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBPoll( void )
|
||||
{
|
||||
static uint8_t *ucMBFrame;
|
||||
static uint8_t ucRcvAddress;
|
||||
static uint8_t ucFunctionCode;
|
||||
static uint16_t usLength;
|
||||
static eMBException eException;
|
||||
|
||||
int i;
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
eMBEventType eEvent;
|
||||
|
||||
/* Check if the protocol stack is ready. */
|
||||
if( eMBState != STATE_ENABLED )
|
||||
{
|
||||
return MB_EILLSTATE;
|
||||
}
|
||||
|
||||
/* Check if there is a event available. If not return control to caller.
|
||||
* Otherwise we will handle the event. */
|
||||
if( xMBPortEventGet( &eEvent ) == true )
|
||||
{
|
||||
switch ( eEvent )
|
||||
{
|
||||
case EV_READY:
|
||||
break;
|
||||
|
||||
case EV_FRAME_RECEIVED:
|
||||
eStatus = peMBFrameReceiveCur( &ucRcvAddress, &ucMBFrame, &usLength );
|
||||
if( eStatus == MB_ENOERR )
|
||||
{
|
||||
/* Check if the frame is for us. If not ignore the frame. */
|
||||
if( ( ucRcvAddress == ucMBAddress ) || ( ucRcvAddress == MB_ADDRESS_BROADCAST ) )
|
||||
{
|
||||
( void )xMBPortEventPost( EV_EXECUTE );
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case EV_EXECUTE:
|
||||
ucFunctionCode = ucMBFrame[MB_PDU_FUNC_OFF];
|
||||
eException = MB_EX_ILLEGAL_FUNCTION;
|
||||
for( i = 0; i < CONFIG_MB_FUNC_HANDLERS_MAX; i++ )
|
||||
{
|
||||
/* No more function handlers registered. Abort. */
|
||||
if( xFuncHandlers[i].ucFunctionCode == 0 )
|
||||
{
|
||||
break;
|
||||
}
|
||||
else if( xFuncHandlers[i].ucFunctionCode == ucFunctionCode )
|
||||
{
|
||||
eException = xFuncHandlers[i].pxHandler( ucMBFrame, &usLength );
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* If the request was not sent to the broadcast address we
|
||||
* return a reply. */
|
||||
if( ucRcvAddress != MB_ADDRESS_BROADCAST )
|
||||
{
|
||||
if( eException != MB_EX_NONE )
|
||||
{
|
||||
/* An exception occured. Build an error frame. */
|
||||
usLength = 0;
|
||||
ucMBFrame[usLength++] = ( uint8_t )( ucFunctionCode | MB_FUNC_ERROR );
|
||||
ucMBFrame[usLength++] = eException;
|
||||
}
|
||||
if( ( eMBCurrentMode == MB_ASCII ) && CONFIG_MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS )
|
||||
{
|
||||
vMBPortTimersDelay( CONFIG_MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS );
|
||||
}
|
||||
eStatus = peMBFrameSendCur( ucMBAddress, ucMBFrame, usLength );
|
||||
}
|
||||
break;
|
||||
|
||||
case EV_FRAME_SENT:
|
||||
break;
|
||||
}
|
||||
}
|
||||
return MB_ENOERR;
|
||||
}
|
||||
@@ -0,0 +1,40 @@
|
||||
############################################################################
|
||||
# apps/modbus/nuttx/Make.defs
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
CSRCS += portevent.c portother.c portserial.c porttimer.c
|
||||
|
||||
DEPPATH += --dep-path nuttx
|
||||
VPATH += :nuttx
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/nuttx}
|
||||
@@ -0,0 +1,77 @@
|
||||
/*
|
||||
* FreeModbus Libary: NuttX Port
|
||||
* Based on the FreeModbus Linux port by:
|
||||
*
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
* File: $Id: port.h,v 1.1 2006/08/01 20:58:49 wolti Exp $
|
||||
*/
|
||||
|
||||
#ifndef __APPS_MODBUS_NUTTX_PORT_H
|
||||
#define __APPS_MODBUS_NUTTX_PORT_H
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <assert.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
|
||||
#define INLINE
|
||||
#define PR_BEGIN_EXTERN_C extern "C" {
|
||||
#define PR_END_EXTERN_C }
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_BEGIN_EXTERN_C
|
||||
#endif
|
||||
|
||||
#define ENTER_CRITICAL_SECTION( ) vMBPortEnterCritical()
|
||||
#define EXIT_CRITICAL_SECTION( ) vMBPortExitCritical()
|
||||
|
||||
#define MB_PORT_HAS_CLOSE 1
|
||||
|
||||
#ifndef true
|
||||
# define true true
|
||||
#endif
|
||||
|
||||
#ifndef false
|
||||
# define false false
|
||||
#endif
|
||||
|
||||
/* ----------------------- Type definitions ---------------------------------*/
|
||||
|
||||
typedef enum
|
||||
{
|
||||
MB_LOG_ERROR = 0,
|
||||
MB_LOG_WARN = 1,
|
||||
MB_LOG_INFO = 2,
|
||||
MB_LOG_DEBUG = 3
|
||||
} eMBPortLogLevel;
|
||||
|
||||
/* ----------------------- Function prototypes ------------------------------*/
|
||||
|
||||
void vMBPortEnterCritical(void);
|
||||
void vMBPortExitCritical(void);
|
||||
void vMBPortLog(eMBPortLogLevel eLevel, const char * szModule,
|
||||
const char * szFmt, ...);
|
||||
void vMBPortTimerPoll(void);
|
||||
bool xMBPortSerialPoll(void);
|
||||
bool xMBPortSerialSetTimeout(uint32_t dwTimeoutMs);
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_END_EXTERN_C
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,76 @@
|
||||
/*
|
||||
* FreeModbus Libary: NuttX Port
|
||||
* Based on the FreeModbus Linux port by:
|
||||
*
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
* File: $Id: portevent.c,v 1.1 2006/08/01 20:58:49 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Variables ----------------------------------------*/
|
||||
static eMBEventType eQueuedEvent;
|
||||
static bool xEventInQueue;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
bool
|
||||
xMBPortEventInit( void )
|
||||
{
|
||||
xEventInQueue = false;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBPortEventPost( eMBEventType eEvent )
|
||||
{
|
||||
xEventInQueue = true;
|
||||
eQueuedEvent = eEvent;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBPortEventGet( eMBEventType * eEvent )
|
||||
{
|
||||
bool xEventHappened = false;
|
||||
|
||||
if( xEventInQueue )
|
||||
{
|
||||
*eEvent = eQueuedEvent;
|
||||
xEventInQueue = false;
|
||||
xEventHappened = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Poll the serial device. The serial device timeouts if no
|
||||
* characters have been received within for t3.5 during an
|
||||
* active transmission or if nothing happens within a specified
|
||||
* amount of time. Both timeouts are configured from the timer
|
||||
* init functions.
|
||||
*/
|
||||
( void )xMBPortSerialPoll( );
|
||||
|
||||
/* Check if any of the timers have expired. */
|
||||
vMBPortTimerPoll( );
|
||||
|
||||
}
|
||||
return xEventHappened;
|
||||
}
|
||||
@@ -0,0 +1,106 @@
|
||||
/*
|
||||
* FreeModbus Libary: NuttX Port
|
||||
* Based on the FreeModbus Linux port by:
|
||||
*
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
* File: $Id: portother.c,v 1.1 2006/08/01 20:58:49 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- Standard includes --------------------------------*/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdarg.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <pthread.h>
|
||||
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
|
||||
#define NELEMS(x) (sizeof((x))/sizeof((x)[0]))
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
|
||||
static FILE *fLogFile = NULL;
|
||||
static eMBPortLogLevel eLevelMax = MB_LOG_DEBUG;
|
||||
static pthread_mutex_t xLock = PTHREAD_MUTEX_INITIALIZER;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
|
||||
void vMBPortLogLevel(eMBPortLogLevel eNewLevelMax)
|
||||
{
|
||||
eLevelMax = eNewLevelMax;
|
||||
}
|
||||
|
||||
void vMBPortLogFile(FILE * fNewLogFile)
|
||||
{
|
||||
fLogFile = fNewLogFile;
|
||||
}
|
||||
|
||||
void vMBPortLog(eMBPortLogLevel eLevel, const char * szModule, const char * szFmt, ...)
|
||||
{
|
||||
char szBuf[512];
|
||||
int i;
|
||||
va_list args;
|
||||
FILE *fOutput = fLogFile == NULL ? stderr : fLogFile;
|
||||
|
||||
static const char *arszLevel2Str[] = { "ERROR", "WARN", "INFO", "DEBUG" };
|
||||
|
||||
i = snprintf(szBuf, NELEMS(szBuf), "%s: %s: ", arszLevel2Str[eLevel], szModule);
|
||||
|
||||
if (i != 0)
|
||||
{
|
||||
va_start(args, szFmt);
|
||||
i += vsnprintf(&szBuf[i], NELEMS(szBuf) - i, szFmt, args);
|
||||
va_end(args);
|
||||
}
|
||||
|
||||
if (i != 0)
|
||||
{
|
||||
if (eLevel <= eLevelMax)
|
||||
{
|
||||
fputs(szBuf, fOutput);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void vMBPortEnterCritical(void)
|
||||
{
|
||||
int ret = pthread_mutex_lock(&xLock);
|
||||
if (ret != 0)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "OTHER", "Locking primitive failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
|
||||
void vMBPortExitCritical(void)
|
||||
{
|
||||
int ret = pthread_mutex_unlock(&xLock);
|
||||
if (ret != 0)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "OTHER", "Locking primitive failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,369 @@
|
||||
/*
|
||||
* FreeModbus Libary: NuttX Port
|
||||
* Based on the FreeModbus Linux port by:
|
||||
*
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
* File: $Id: portserial.c,v 1.3 2006/10/12 08:35:34 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- Standard includes --------------------------------*/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/select.h>
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
#include <assert.h>
|
||||
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
# include <termios.h>
|
||||
#endif
|
||||
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
/* ----------------------- Defines -----------------------------------------*/
|
||||
|
||||
#ifdef CONFIG_MB_ASCII_ENABLED
|
||||
#define BUF_SIZE 513 /* must hold a complete ASCII frame. */
|
||||
#else
|
||||
#define BUF_SIZE 256 /* must hold a complete RTU frame. */
|
||||
#endif
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
|
||||
static int iSerialFd = -1;
|
||||
static bool bRxEnabled;
|
||||
static bool bTxEnabled;
|
||||
|
||||
static uint32_t ulTimeoutMs;
|
||||
static uint8_t ucBuffer[BUF_SIZE];
|
||||
static int uiRxBufferPos;
|
||||
static int uiTxBufferPos;
|
||||
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
static struct termios xOldTIO;
|
||||
#endif
|
||||
|
||||
/* ----------------------- Function prototypes ------------------------------*/
|
||||
|
||||
static bool prvbMBPortSerialRead(uint8_t *pucBuffer, uint16_t usNBytes, uint16_t *usNBytesRead);
|
||||
static bool prvbMBPortSerialWrite(uint8_t *pucBuffer, uint16_t usNBytes);
|
||||
|
||||
/* ----------------------- Begin implementation -----------------------------*/
|
||||
|
||||
void vMBPortSerialEnable(bool bEnableRx, bool bEnableTx)
|
||||
{
|
||||
/* it is not allowed that both receiver and transmitter are enabled. */
|
||||
|
||||
ASSERT(!bEnableRx || !bEnableTx);
|
||||
|
||||
if (bEnableRx)
|
||||
{
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
(void)tcflush(iSerialFd, TCIFLUSH);
|
||||
#endif
|
||||
uiRxBufferPos = 0;
|
||||
bRxEnabled = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
bRxEnabled = false;
|
||||
}
|
||||
|
||||
if (bEnableTx)
|
||||
{
|
||||
bTxEnabled = true;
|
||||
uiTxBufferPos = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
bTxEnabled = false;
|
||||
}
|
||||
}
|
||||
|
||||
bool xMBPortSerialInit(uint8_t ucPort, speed_t ulBaudRate,
|
||||
uint8_t ucDataBits, eMBParity eParity)
|
||||
{
|
||||
char szDevice[16];
|
||||
bool bStatus = true;
|
||||
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
struct termios xNewTIO;
|
||||
#endif
|
||||
|
||||
snprintf(szDevice, 16, "/dev/ttyS%d", ucPort);
|
||||
|
||||
if ((iSerialFd = open(szDevice, O_RDWR | O_NOCTTY)) < 0)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-INIT", "Can't open serial port %s: %d\n",
|
||||
szDevice, errno);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
else if (tcgetattr(iSerialFd, &xOldTIO) != 0)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-INIT", "Can't get settings from port %s: %d\n",
|
||||
szDevice, errno);
|
||||
}
|
||||
else
|
||||
{
|
||||
bzero(&xNewTIO, sizeof(struct termios));
|
||||
|
||||
xNewTIO.c_iflag |= IGNBRK | INPCK;
|
||||
xNewTIO.c_cflag |= CREAD | CLOCAL;
|
||||
switch (eParity)
|
||||
{
|
||||
case MB_PAR_NONE:
|
||||
break;
|
||||
case MB_PAR_EVEN:
|
||||
xNewTIO.c_cflag |= PARENB;
|
||||
break;
|
||||
case MB_PAR_ODD:
|
||||
xNewTIO.c_cflag |= PARENB | PARODD;
|
||||
break;
|
||||
default:
|
||||
bStatus = false;
|
||||
}
|
||||
|
||||
switch (ucDataBits)
|
||||
{
|
||||
case 8:
|
||||
xNewTIO.c_cflag |= CS8;
|
||||
break;
|
||||
case 7:
|
||||
xNewTIO.c_cflag |= CS7;
|
||||
break;
|
||||
default:
|
||||
bStatus = false;
|
||||
}
|
||||
|
||||
if (bStatus)
|
||||
{
|
||||
/* Set the new baud. The following might be compatible with other
|
||||
* OSs for the following reason.
|
||||
*
|
||||
* (1) In NuttX, cfset[i|o]speed always return OK so failures will
|
||||
* really only be reported when tcsetattr() is called.
|
||||
* (2) NuttX does not support separate input and output speeds so it
|
||||
* is not necessary to call both cfsetispeed() and
|
||||
* cfsetospeed(), and
|
||||
* (3) In NuttX, the input value to cfiset[i|o]speed is not
|
||||
* encoded, but is the absolute baud value. The following might
|
||||
* not be
|
||||
*/
|
||||
|
||||
if (cfsetispeed(&xNewTIO, ulBaudRate) != 0 /* || cfsetospeed(&xNewTIO, ulBaudRate) != 0 */)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-INIT", "Can't set baud rate %ld for port %s: %d\n",
|
||||
ulBaudRate, szDevice, errno);
|
||||
}
|
||||
else if (tcsetattr(iSerialFd, TCSANOW, &xNewTIO) != 0)
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-INIT", "Can't set settings for port %s: %d\n",
|
||||
szDevice, errno);
|
||||
}
|
||||
else
|
||||
{
|
||||
vMBPortSerialEnable(false, false);
|
||||
bStatus = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return bStatus;
|
||||
}
|
||||
|
||||
bool xMBPortSerialSetTimeout(uint32_t ulNewTimeoutMs)
|
||||
{
|
||||
if (ulNewTimeoutMs > 0)
|
||||
{
|
||||
ulTimeoutMs = ulNewTimeoutMs;
|
||||
}
|
||||
else
|
||||
{
|
||||
ulTimeoutMs = 1;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void vMBPortClose(void)
|
||||
{
|
||||
if (iSerialFd != -1)
|
||||
{
|
||||
#ifdef CONFIG_SERIAL_TERMIOS
|
||||
(void)tcsetattr(iSerialFd, TCSANOW, &xOldTIO);
|
||||
#endif
|
||||
(void)close(iSerialFd);
|
||||
iSerialFd = -1;
|
||||
}
|
||||
}
|
||||
|
||||
bool prvbMBPortSerialRead(uint8_t *pucBuffer, uint16_t usNBytes, uint16_t *usNBytesRead)
|
||||
{
|
||||
bool bResult = true;
|
||||
ssize_t res;
|
||||
fd_set rfds;
|
||||
struct timeval tv;
|
||||
|
||||
tv.tv_sec = 0;
|
||||
tv.tv_usec = 50000;
|
||||
FD_ZERO(&rfds);
|
||||
FD_SET(iSerialFd, &rfds);
|
||||
|
||||
/* Wait until character received or timeout. Recover in case of an
|
||||
* interrupted read system call.
|
||||
*/
|
||||
|
||||
do
|
||||
{
|
||||
if (select(iSerialFd + 1, &rfds, NULL, NULL, &tv) == -1)
|
||||
{
|
||||
if (errno != EINTR)
|
||||
{
|
||||
bResult = false;
|
||||
}
|
||||
}
|
||||
else if (FD_ISSET(iSerialFd, &rfds))
|
||||
{
|
||||
if ((res = read(iSerialFd, pucBuffer, usNBytes)) == -1)
|
||||
{
|
||||
bResult = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
*usNBytesRead = (uint16_t)res;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
*usNBytesRead = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
while(bResult == true);
|
||||
return bResult;
|
||||
}
|
||||
|
||||
bool prvbMBPortSerialWrite(uint8_t *pucBuffer, uint16_t usNBytes)
|
||||
{
|
||||
ssize_t res;
|
||||
size_t left = (size_t) usNBytes;
|
||||
size_t done = 0;
|
||||
|
||||
while(left > 0)
|
||||
{
|
||||
if ((res = write(iSerialFd, pucBuffer + done, left)) == -1)
|
||||
{
|
||||
if (errno != EINTR)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
/* call write again because of interrupted system call. */
|
||||
continue;
|
||||
}
|
||||
|
||||
done += res;
|
||||
left -= res;
|
||||
}
|
||||
|
||||
return left == 0 ? true : false;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBPortSerialPoll()
|
||||
{
|
||||
bool bStatus = true;
|
||||
uint16_t usBytesRead;
|
||||
int i;
|
||||
|
||||
while(bRxEnabled)
|
||||
{
|
||||
if (prvbMBPortSerialRead(&ucBuffer[0], BUF_SIZE, &usBytesRead))
|
||||
{
|
||||
if (usBytesRead == 0)
|
||||
{
|
||||
/* timeout with no bytes. */
|
||||
break;
|
||||
}
|
||||
else if (usBytesRead > 0)
|
||||
{
|
||||
for(i = 0; i < usBytesRead; i++)
|
||||
{
|
||||
/* Call the modbus stack and let him fill the buffers. */
|
||||
(void)pxMBFrameCBByteReceived();
|
||||
}
|
||||
uiRxBufferPos = 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-POLL", "read failed on serial device: %d\n",
|
||||
errno);
|
||||
bStatus = false;
|
||||
}
|
||||
}
|
||||
if (bTxEnabled)
|
||||
{
|
||||
while(bTxEnabled)
|
||||
{
|
||||
(void)pxMBFrameCBTransmitterEmpty();
|
||||
/* Call the modbus stack to let him fill the buffer. */
|
||||
}
|
||||
if (!prvbMBPortSerialWrite(&ucBuffer[0], uiTxBufferPos))
|
||||
{
|
||||
vMBPortLog(MB_LOG_ERROR, "SER-POLL", "write failed on serial device: %d\n",
|
||||
errno);
|
||||
bStatus = false;
|
||||
}
|
||||
}
|
||||
|
||||
return bStatus;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBPortSerialPutByte(int8_t ucByte)
|
||||
{
|
||||
ASSERT(uiTxBufferPos < BUF_SIZE);
|
||||
ucBuffer[uiTxBufferPos] = ucByte;
|
||||
uiTxBufferPos++;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBPortSerialGetByte(int8_t *pucByte)
|
||||
{
|
||||
ASSERT(uiRxBufferPos < BUF_SIZE);
|
||||
*pucByte = ucBuffer[uiRxBufferPos];
|
||||
uiRxBufferPos++;
|
||||
return true;
|
||||
}
|
||||
@@ -0,0 +1,102 @@
|
||||
/*
|
||||
* FreeModbus Libary: NuttX Port
|
||||
* Based on the FreeModbus Linux port by:
|
||||
*
|
||||
* Copyright (C) 2006 Christian Walter <wolti@sil.at>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
* File: $Id: porttimer.c,v 1.1 2006/08/01 20:58:50 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- Standard includes --------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/time.h>
|
||||
#include <stdlib.h>
|
||||
#include <assert.h>
|
||||
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
uint32_t ulTimeOut;
|
||||
bool bTimeoutEnable;
|
||||
|
||||
static struct timeval xTimeLast;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
bool
|
||||
xMBPortTimersInit( uint16_t usTim1Timerout50us )
|
||||
{
|
||||
ulTimeOut = usTim1Timerout50us / 20U;
|
||||
if( ulTimeOut == 0 )
|
||||
ulTimeOut = 1;
|
||||
|
||||
return xMBPortSerialSetTimeout( ulTimeOut );
|
||||
}
|
||||
|
||||
void
|
||||
xMBPortTimersClose( )
|
||||
{
|
||||
/* Does not use any hardware resources. */
|
||||
}
|
||||
|
||||
void
|
||||
vMBPortTimerPoll( )
|
||||
{
|
||||
uint32_t ulDeltaMS;
|
||||
struct timeval xTimeCur;
|
||||
|
||||
/* Timers are called from the serial layer because we have no high
|
||||
* res timer in Win32. */
|
||||
if( bTimeoutEnable )
|
||||
{
|
||||
if( gettimeofday( &xTimeCur, NULL ) != 0 )
|
||||
{
|
||||
/* gettimeofday failed - retry next time. */
|
||||
}
|
||||
else
|
||||
{
|
||||
ulDeltaMS = ( xTimeCur.tv_sec - xTimeLast.tv_sec ) * 1000L +
|
||||
( xTimeCur.tv_usec - xTimeLast.tv_usec ) * 1000L;
|
||||
if( ulDeltaMS > ulTimeOut )
|
||||
{
|
||||
bTimeoutEnable = false;
|
||||
( void )pxMBPortCBTimerExpired( );
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
vMBPortTimersEnable( )
|
||||
{
|
||||
int res = gettimeofday( &xTimeLast, NULL );
|
||||
|
||||
ASSERT( res == 0 );
|
||||
bTimeoutEnable = true;
|
||||
}
|
||||
|
||||
void
|
||||
vMBPortTimersDisable( )
|
||||
{
|
||||
bTimeoutEnable = false;
|
||||
}
|
||||
@@ -0,0 +1,44 @@
|
||||
############################################################################
|
||||
# apps/modbus/rtu/Make.defs
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
ifeq ($(CONFIG_MB_RTU_ENABLED),y)
|
||||
|
||||
CSRCS += mbcrc.c mbrtu.c
|
||||
|
||||
DEPPATH += --dep-path rtu
|
||||
VPATH += :rtu
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/rtu}
|
||||
|
||||
endif
|
||||
@@ -0,0 +1,98 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbcrc.c,v 1.7 2007/02/18 23:50:27 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
static const uint8_t aucCRCHi[] = {
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
|
||||
0x00, 0xC1, 0x81, 0x40
|
||||
};
|
||||
|
||||
static const uint8_t aucCRCLo[] = {
|
||||
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
|
||||
0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
|
||||
0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
|
||||
0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
|
||||
0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
|
||||
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
|
||||
0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
|
||||
0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
|
||||
0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
|
||||
0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
|
||||
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
|
||||
0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
|
||||
0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
|
||||
0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
|
||||
0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
|
||||
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
|
||||
0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
|
||||
0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
|
||||
0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
|
||||
0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
|
||||
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
|
||||
0x41, 0x81, 0x80, 0x40
|
||||
};
|
||||
|
||||
uint16_t
|
||||
usMBCRC16( uint8_t * pucFrame, uint16_t usLen )
|
||||
{
|
||||
uint8_t ucCRCHi = 0xFF;
|
||||
uint8_t ucCRCLo = 0xFF;
|
||||
int iIndex;
|
||||
|
||||
while( usLen-- )
|
||||
{
|
||||
iIndex = ucCRCLo ^ *( pucFrame++ );
|
||||
ucCRCLo = ( uint8_t )( ucCRCHi ^ aucCRCHi[iIndex] );
|
||||
ucCRCHi = aucCRCLo[iIndex];
|
||||
}
|
||||
return ( uint16_t )( ucCRCHi << 8 | ucCRCLo );
|
||||
}
|
||||
@@ -0,0 +1,36 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbcrc.h,v 1.5 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
#ifndef _MB_CRC_H
|
||||
#define _MB_CRC_H
|
||||
|
||||
uint16_t usMBCRC16( uint8_t * pucFrame, uint16_t usLen );
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,357 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbrtu.c,v 1.18 2007/09/12 10:15:56 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbus/mb.h>
|
||||
#include <apps/modbus/mbframe.h>
|
||||
#include <apps/modbus/mbport.h>
|
||||
|
||||
#include "mbrtu.h"
|
||||
#include "mbcrc.h"
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_SER_PDU_SIZE_MIN 4 /*!< Minimum size of a Modbus RTU frame. */
|
||||
#define MB_SER_PDU_SIZE_MAX 256 /*!< Maximum size of a Modbus RTU frame. */
|
||||
#define MB_SER_PDU_SIZE_CRC 2 /*!< Size of CRC field in PDU. */
|
||||
#define MB_SER_PDU_ADDR_OFF 0 /*!< Offset of slave address in Ser-PDU. */
|
||||
#define MB_SER_PDU_PDU_OFF 1 /*!< Offset of Modbus-PDU in Ser-PDU. */
|
||||
|
||||
/* ----------------------- Type definitions ---------------------------------*/
|
||||
typedef enum
|
||||
{
|
||||
STATE_RX_INIT, /*!< Receiver is in initial state. */
|
||||
STATE_RX_IDLE, /*!< Receiver is in idle state. */
|
||||
STATE_RX_RCV, /*!< Frame is beeing received. */
|
||||
STATE_RX_ERROR /*!< If the frame is invalid. */
|
||||
} eMBRcvState;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
STATE_TX_IDLE, /*!< Transmitter is in idle state. */
|
||||
STATE_TX_XMIT /*!< Transmitter is in transfer state. */
|
||||
} eMBSndState;
|
||||
|
||||
/* ----------------------- Static variables ---------------------------------*/
|
||||
static volatile eMBSndState eSndState;
|
||||
static volatile eMBRcvState eRcvState;
|
||||
|
||||
volatile uint8_t ucRTUBuf[MB_SER_PDU_SIZE_MAX];
|
||||
|
||||
static volatile uint8_t *pucSndBufferCur;
|
||||
static volatile uint16_t usSndBufferCount;
|
||||
|
||||
static volatile uint16_t usRcvBufferPos;
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
eMBErrorCode
|
||||
eMBRTUInit( uint8_t ucSlaveAddress, uint8_t ucPort, speed_t ulBaudRate, eMBParity eParity )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint32_t usTimerT35_50us;
|
||||
|
||||
( void )ucSlaveAddress;
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
|
||||
/* Modbus RTU uses 8 Databits. */
|
||||
if( xMBPortSerialInit( ucPort, ulBaudRate, 8, eParity ) != true )
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* If baudrate > 19200 then we should use the fixed timer values
|
||||
* t35 = 1750us. Otherwise t35 must be 3.5 times the character time.
|
||||
*/
|
||||
if( ulBaudRate > 19200 )
|
||||
{
|
||||
usTimerT35_50us = 35; /* 1800us. */
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The timer reload value for a character is given by:
|
||||
*
|
||||
* ChTimeValue = Ticks_per_1s / ( Baudrate / 11 )
|
||||
* = 11 * Ticks_per_1s / Baudrate
|
||||
* = 220000 / Baudrate
|
||||
* The reload for t3.5 is 1.5 times this value and similary
|
||||
* for t3.5.
|
||||
*/
|
||||
usTimerT35_50us = ( 7UL * 220000UL ) / ( 2UL * ulBaudRate );
|
||||
}
|
||||
if( xMBPortTimersInit( ( uint16_t ) usTimerT35_50us ) != true )
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
}
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
void
|
||||
eMBRTUStart( void )
|
||||
{
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
/* Initially the receiver is in the state STATE_RX_INIT. we start
|
||||
* the timer and if no character is received within t3.5 we change
|
||||
* to STATE_RX_IDLE. This makes sure that we delay startup of the
|
||||
* modbus protocol stack until the bus is free.
|
||||
*/
|
||||
eRcvState = STATE_RX_INIT;
|
||||
vMBPortSerialEnable( true, false );
|
||||
vMBPortTimersEnable( );
|
||||
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
}
|
||||
|
||||
void
|
||||
eMBRTUStop( void )
|
||||
{
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
vMBPortSerialEnable( false, false );
|
||||
vMBPortTimersDisable( );
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBRTUReceive( uint8_t * pucRcvAddress, uint8_t ** pucFrame, uint16_t * pusLength )
|
||||
{
|
||||
bool xFrameReceived = false;
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
ASSERT( usRcvBufferPos < MB_SER_PDU_SIZE_MAX );
|
||||
|
||||
/* Length and CRC check */
|
||||
if( ( usRcvBufferPos >= MB_SER_PDU_SIZE_MIN )
|
||||
&& ( usMBCRC16( ( uint8_t * ) ucRTUBuf, usRcvBufferPos ) == 0 ) )
|
||||
{
|
||||
/* Save the address field. All frames are passed to the upper layed
|
||||
* and the decision if a frame is used is done there.
|
||||
*/
|
||||
*pucRcvAddress = ucRTUBuf[MB_SER_PDU_ADDR_OFF];
|
||||
|
||||
/* Total length of Modbus-PDU is Modbus-Serial-Line-PDU minus
|
||||
* size of address field and CRC checksum.
|
||||
*/
|
||||
*pusLength = ( uint16_t )( usRcvBufferPos - MB_SER_PDU_PDU_OFF - MB_SER_PDU_SIZE_CRC );
|
||||
|
||||
/* Return the start of the Modbus PDU to the caller. */
|
||||
*pucFrame = ( uint8_t * ) & ucRTUBuf[MB_SER_PDU_PDU_OFF];
|
||||
xFrameReceived = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBRTUSend( uint8_t ucSlaveAddress, const uint8_t * pucFrame, uint16_t usLength )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint16_t usCRC16;
|
||||
|
||||
ENTER_CRITICAL_SECTION( );
|
||||
|
||||
/* Check if the receiver is still in idle state. If not we where to
|
||||
* slow with processing the received frame and the master sent another
|
||||
* frame on the network. We have to abort sending the frame.
|
||||
*/
|
||||
if( eRcvState == STATE_RX_IDLE )
|
||||
{
|
||||
/* First byte before the Modbus-PDU is the slave address. */
|
||||
pucSndBufferCur = ( uint8_t * ) pucFrame - 1;
|
||||
usSndBufferCount = 1;
|
||||
|
||||
/* Now copy the Modbus-PDU into the Modbus-Serial-Line-PDU. */
|
||||
pucSndBufferCur[MB_SER_PDU_ADDR_OFF] = ucSlaveAddress;
|
||||
usSndBufferCount += usLength;
|
||||
|
||||
/* Calculate CRC16 checksum for Modbus-Serial-Line-PDU. */
|
||||
usCRC16 = usMBCRC16( ( uint8_t * ) pucSndBufferCur, usSndBufferCount );
|
||||
ucRTUBuf[usSndBufferCount++] = ( uint8_t )( usCRC16 & 0xFF );
|
||||
ucRTUBuf[usSndBufferCount++] = ( uint8_t )( usCRC16 >> 8 );
|
||||
|
||||
/* Activate the transmitter. */
|
||||
eSndState = STATE_TX_XMIT;
|
||||
vMBPortSerialEnable( false, true );
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
EXIT_CRITICAL_SECTION( );
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUReceiveFSM( void )
|
||||
{
|
||||
bool xTaskNeedSwitch = false;
|
||||
uint8_t ucByte;
|
||||
|
||||
ASSERT( eSndState == STATE_TX_IDLE );
|
||||
|
||||
/* Always read the character. */
|
||||
( void )xMBPortSerialGetByte( ( int8_t * ) & ucByte );
|
||||
|
||||
switch ( eRcvState )
|
||||
{
|
||||
/* If we have received a character in the init state we have to
|
||||
* wait until the frame is finished.
|
||||
*/
|
||||
case STATE_RX_INIT:
|
||||
vMBPortTimersEnable( );
|
||||
break;
|
||||
|
||||
/* In the error state we wait until all characters in the
|
||||
* damaged frame are transmitted.
|
||||
*/
|
||||
case STATE_RX_ERROR:
|
||||
vMBPortTimersEnable( );
|
||||
break;
|
||||
|
||||
/* In the idle state we wait for a new character. If a character
|
||||
* is received the t1.5 and t3.5 timers are started and the
|
||||
* receiver is in the state STATE_RX_RECEIVCE.
|
||||
*/
|
||||
case STATE_RX_IDLE:
|
||||
usRcvBufferPos = 0;
|
||||
ucRTUBuf[usRcvBufferPos++] = ucByte;
|
||||
eRcvState = STATE_RX_RCV;
|
||||
|
||||
/* Enable t3.5 timers. */
|
||||
vMBPortTimersEnable( );
|
||||
break;
|
||||
|
||||
/* We are currently receiving a frame. Reset the timer after
|
||||
* every character received. If more than the maximum possible
|
||||
* number of bytes in a modbus frame is received the frame is
|
||||
* ignored.
|
||||
*/
|
||||
case STATE_RX_RCV:
|
||||
if( usRcvBufferPos < MB_SER_PDU_SIZE_MAX )
|
||||
{
|
||||
ucRTUBuf[usRcvBufferPos++] = ucByte;
|
||||
}
|
||||
else
|
||||
{
|
||||
eRcvState = STATE_RX_ERROR;
|
||||
}
|
||||
vMBPortTimersEnable( );
|
||||
break;
|
||||
}
|
||||
return xTaskNeedSwitch;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUTransmitFSM( void )
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
|
||||
ASSERT( eRcvState == STATE_RX_IDLE );
|
||||
|
||||
switch ( eSndState )
|
||||
{
|
||||
/* We should not get a transmitter event if the transmitter is in
|
||||
* idle state. */
|
||||
case STATE_TX_IDLE:
|
||||
/* enable receiver/disable transmitter. */
|
||||
vMBPortSerialEnable( true, false );
|
||||
break;
|
||||
|
||||
case STATE_TX_XMIT:
|
||||
/* check if we are finished. */
|
||||
if( usSndBufferCount != 0 )
|
||||
{
|
||||
xMBPortSerialPutByte( ( int8_t )*pucSndBufferCur );
|
||||
pucSndBufferCur++; /* next byte in sendbuffer. */
|
||||
usSndBufferCount--;
|
||||
}
|
||||
else
|
||||
{
|
||||
xNeedPoll = xMBPortEventPost( EV_FRAME_SENT );
|
||||
/* Disable transmitter. This prevents another transmit buffer
|
||||
* empty interrupt. */
|
||||
vMBPortSerialEnable( true, false );
|
||||
eSndState = STATE_TX_IDLE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return xNeedPoll;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUTimerT35Expired( void )
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
|
||||
switch ( eRcvState )
|
||||
{
|
||||
/* Timer t35 expired. Startup phase is finished. */
|
||||
case STATE_RX_INIT:
|
||||
xNeedPoll = xMBPortEventPost( EV_READY );
|
||||
break;
|
||||
|
||||
/* A frame was received and t35 expired. Notify the listener that
|
||||
* a new frame was received. */
|
||||
case STATE_RX_RCV:
|
||||
xNeedPoll = xMBPortEventPost( EV_FRAME_RECEIVED );
|
||||
break;
|
||||
|
||||
/* An error occured while receiving the frame. */
|
||||
case STATE_RX_ERROR:
|
||||
break;
|
||||
|
||||
/* Function called in an illegal state. */
|
||||
default:
|
||||
ASSERT( ( eRcvState == STATE_RX_INIT ) ||
|
||||
( eRcvState == STATE_RX_RCV ) || ( eRcvState == STATE_RX_ERROR ) );
|
||||
}
|
||||
|
||||
vMBPortTimersDisable( );
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
|
||||
return xNeedPoll;
|
||||
}
|
||||
@@ -0,0 +1,51 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbrtu.h,v 1.9 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
#ifndef _MB_RTU_H
|
||||
#define _MB_RTU_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_BEGIN_EXTERN_C
|
||||
#endif
|
||||
eMBErrorCode eMBRTUInit( uint8_t slaveAddress, uint8_t ucPort, speed_t ulBaudRate,
|
||||
eMBParity eParity );
|
||||
void eMBRTUStart( void );
|
||||
void eMBRTUStop( void );
|
||||
eMBErrorCode eMBRTUReceive( uint8_t * pucRcvAddress, uint8_t ** pucFrame, uint16_t * pusLength );
|
||||
eMBErrorCode eMBRTUSend( uint8_t slaveAddress, const uint8_t * pucFrame, uint16_t usLength );
|
||||
bool xMBRTUReceiveFSM( void );
|
||||
bool xMBRTUTransmitFSM( void );
|
||||
bool xMBRTUTimerT15Expired( void );
|
||||
bool xMBRTUTimerT35Expired( void );
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_END_EXTERN_C
|
||||
#endif
|
||||
#endif
|
||||
@@ -0,0 +1,44 @@
|
||||
############################################################################
|
||||
# apps/modbus/tcp/Make.defs
|
||||
#
|
||||
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
ifeq ($(CONFIG_MB_TCP_ENABLED),y)
|
||||
|
||||
CSRCS += mbtcp.c
|
||||
|
||||
DEPPATH += --dep-path tcp
|
||||
VPATH += :tcp
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/tcp}
|
||||
|
||||
endif
|
||||
@@ -0,0 +1,159 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbtcp.c,v 1.3 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
/* ----------------------- System includes ----------------------------------*/
|
||||
#include <nuttx/config.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* ----------------------- Platform includes --------------------------------*/
|
||||
#include "port.h"
|
||||
|
||||
/* ----------------------- Modbus includes ----------------------------------*/
|
||||
#include <apps/modbusmb.h>
|
||||
#include <apps/modbusmbframe.h>
|
||||
#include <apps/modbusmbport.h>
|
||||
|
||||
#include "mbtcp.h"
|
||||
|
||||
#ifdef CONFIG_MB_TCP_ENABLED
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
|
||||
/* ----------------------- MBAP Header --------------------------------------*/
|
||||
/*
|
||||
*
|
||||
* <------------------------ MODBUS TCP/IP ADU(1) ------------------------->
|
||||
* <----------- MODBUS PDU (1') ---------------->
|
||||
* +-----------+---------------+------------------------------------------+
|
||||
* | TID | PID | Length | UID |Code | Data |
|
||||
* +-----------+---------------+------------------------------------------+
|
||||
* | | | | |
|
||||
* (2) (3) (4) (5) (6)
|
||||
*
|
||||
* (2) ... MB_TCP_TID = 0 (Transaction Identifier - 2 Byte)
|
||||
* (3) ... MB_TCP_PID = 2 (Protocol Identifier - 2 Byte)
|
||||
* (4) ... MB_TCP_LEN = 4 (Number of bytes - 2 Byte)
|
||||
* (5) ... MB_TCP_UID = 6 (Unit Identifier - 1 Byte)
|
||||
* (6) ... MB_TCP_FUNC = 7 (Modbus Function Code)
|
||||
*
|
||||
* (1) ... Modbus TCP/IP Application Data Unit
|
||||
* (1') ... Modbus Protocol Data Unit
|
||||
*/
|
||||
|
||||
#define MB_TCP_TID 0
|
||||
#define MB_TCP_PID 2
|
||||
#define MB_TCP_LEN 4
|
||||
#define MB_TCP_UID 6
|
||||
#define MB_TCP_FUNC 7
|
||||
|
||||
#define MB_TCP_PROTOCOL_ID 0 /* 0 = Modbus Protocol */
|
||||
|
||||
|
||||
/* ----------------------- Start implementation -----------------------------*/
|
||||
eMBErrorCode
|
||||
eMBTCPDoInit( uint16_t ucTCPPort )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
if( xMBTCPPortInit( ucTCPPort ) == false )
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
void
|
||||
eMBTCPStart( void )
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
eMBTCPStop( void )
|
||||
{
|
||||
/* Make sure that no more clients are connected. */
|
||||
vMBTCPPortDisable( );
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBTCPReceive( uint8_t * pucRcvAddress, uint8_t ** ppucFrame, uint16_t * pusLength )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_EIO;
|
||||
uint8_t *pucMBTCPFrame;
|
||||
uint16_t usLength;
|
||||
uint16_t usPID;
|
||||
|
||||
if( xMBTCPPortGetRequest( &pucMBTCPFrame, &usLength ) != false )
|
||||
{
|
||||
usPID = pucMBTCPFrame[MB_TCP_PID] << 8U;
|
||||
usPID |= pucMBTCPFrame[MB_TCP_PID + 1];
|
||||
|
||||
if( usPID == MB_TCP_PROTOCOL_ID )
|
||||
{
|
||||
*ppucFrame = &pucMBTCPFrame[MB_TCP_FUNC];
|
||||
*pusLength = usLength - MB_TCP_FUNC;
|
||||
eStatus = MB_ENOERR;
|
||||
|
||||
/* Modbus TCP does not use any addresses. Fake the source address such
|
||||
* that the processing part deals with this frame.
|
||||
*/
|
||||
*pucRcvAddress = MB_TCP_PSEUDO_ADDRESS;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBTCPSend( uint8_t _unused, const uint8_t * pucFrame, uint16_t usLength )
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint8_t *pucMBTCPFrame = ( uint8_t * ) pucFrame - MB_TCP_FUNC;
|
||||
uint16_t usTCPLength = usLength + MB_TCP_FUNC;
|
||||
|
||||
/* The MBAP header is already initialized because the caller calls this
|
||||
* function with the buffer returned by the previous call. Therefore we
|
||||
* only have to update the length in the header. Note that the length
|
||||
* header includes the size of the Modbus PDU and the UID Byte. Therefore
|
||||
* the length is usLength plus one.
|
||||
*/
|
||||
pucMBTCPFrame[MB_TCP_LEN] = ( usLength + 1 ) >> 8U;
|
||||
pucMBTCPFrame[MB_TCP_LEN + 1] = ( usLength + 1 ) & 0xFF;
|
||||
if( xMBTCPPortSendResponse( pucMBTCPFrame, usTCPLength ) == false )
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,53 @@
|
||||
/*
|
||||
* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
|
||||
* Copyright (c) 2006 Christian Walter <wolti@sil.at>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* File: $Id: mbtcp.h,v 1.2 2006/12/07 22:10:34 wolti Exp $
|
||||
*/
|
||||
|
||||
#ifndef _MB_TCP_H
|
||||
#define _MB_TCP_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_BEGIN_EXTERN_C
|
||||
#endif
|
||||
|
||||
/* ----------------------- Defines ------------------------------------------*/
|
||||
#define MB_TCP_PSEUDO_ADDRESS 255
|
||||
|
||||
/* ----------------------- Function prototypes ------------------------------*/
|
||||
eMBErrorCode eMBTCPDoInit( uint16_t ucTCPPort );
|
||||
void eMBTCPStart( void );
|
||||
void eMBTCPStop( void );
|
||||
eMBErrorCode eMBTCPReceive( uint8_t * pucRcvAddress, uint8_t ** pucFrame,
|
||||
uint16_t * pusLength );
|
||||
eMBErrorCode eMBTCPSend( uint8_t _unused, const uint8_t * pucFrame,
|
||||
uint16_t usLength );
|
||||
|
||||
#ifdef __cplusplus
|
||||
PR_END_EXTERN_C
|
||||
#endif
|
||||
#endif
|
||||
Reference in New Issue
Block a user