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Completes coding of the PWM module
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
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/****************************************************************************
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* examples/usbterm/usbterm_main.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <pthread.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/usb/usbdev.h>
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#include <nuttx/usb/usbdev_trace.h>
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#ifdef CONFIG_CDCSER
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# include <nuttx/usb/cdc_serial.h>
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#endif
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#include "usbterm.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* USB terminal state data */
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struct usbterm_globals_s g_usbterm;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: trace_callback
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*
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* Description:
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* Callback from USB trace instrumentation.
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*
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****************************************************************************/
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#ifdef CONFIG_USBDEV_TRACE
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static int trace_callback(struct usbtrace_s *trace, void *arg)
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{
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usbtrace_trprintf((trprintf_t)trmessage, trace->event, trace->value);
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return 0;
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}
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#endif
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/****************************************************************************
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* Name: dumptrace
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*
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* Description:
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* Dump collected trace data.
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*
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****************************************************************************/
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#ifdef CONFIG_USBDEV_TRACE
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static void dumptrace(void)
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{
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(void)usbtrace_enumerate(trace_callback, NULL);
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}
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#else
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# define dumptrace()
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#endif
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/****************************************************************************
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* Name: dumptrace
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*
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* Description:
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* Entry point for the listener thread.
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*
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****************************************************************************/
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FAR void *usbterm_listener(FAR void *parameter)
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{
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message("usbterm_listener: Waiting for remote input\n");
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for (;;)
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{
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/* Display the prompt string on the remote USB serial connection */
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fputs("\rusbterm> ", g_usbterm.outstream);
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fflush(g_usbterm.outstream);
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/* Get the next line of input from the remote USB serial connection */
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if (fgets(g_usbterm.inbuffer, CONFIG_EXAMPLES_USBTERM_BUFLEN, g_usbterm.instream))
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{
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/* Echo the line on the local stdout */
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fputs(g_usbterm.inbuffer, stdout);
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/* Display the prompt string on stdout */
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fputs("usbterm> ", stdout);
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fflush(stdout);
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}
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/* If USB tracing is enabled, then dump all collected trace data to stdout */
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dumptrace();
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}
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/* Won't get here */
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return NULL;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: term_main/user_start
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*
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* Description:
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* Main entry point for the USB serial terminal example.
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*
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****************************************************************************/
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#ifdef CONFIG_EXAMPLES_USBTERM_BUILTIN
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# define MAIN_NAME term_main
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# define MAIN_STRING "usbterm_main: "
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#else
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# define MAIN_NAME user_start
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# define MAIN_STRING "user_start: "
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#endif
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int MAIN_NAME(int argc, char *argv[])
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{
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pthread_attr_t attr;
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int ret;
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/* Initialize the USB serial driver */
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message(MAIN_STRING "Registering USB serial driver\n");
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#ifdef CONFIG_CDCSER
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ret = cdcser_initialize(0);
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#else
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ret = usbdev_serialinitialize(0);
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#endif
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if (ret < 0)
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{
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message(MAIN_STRING "ERROR: Failed to create the USB serial device: %d\n", -ret);
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goto errout;
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}
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message(MAIN_STRING "Successfully registered the serial driver\n");
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#if CONFIG_USBDEV_TRACE && CONFIG_USBDEV_TRACE_INITIALIDSET != 0
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/* If USB tracing is enabled and tracing of initial USB events is specified,
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* then dump all collected trace data to stdout
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*/
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sleep(5);
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dumptrace();
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#endif
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/* Then, in any event, configure trace data collection as configured */
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usbtrace_enable(TRACE_BITSET);
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/* Open the USB serial device for writing */
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do
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{
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message(MAIN_STRING "Opening USB serial driver\n");
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g_usbterm.outstream = fopen("/dev/ttyUSB0", "w");
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if (g_usbterm.outstream == NULL)
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{
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int errcode = errno;
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message(MAIN_STRING "ERROR: Failed to open /dev/ttyUSB0 for writing: %d\n",
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errcode);
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/* ENOTCONN means that the USB device is not yet connected */
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if (errcode == ENOTCONN)
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{
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message(MAIN_STRING " Not connected. Wait and try again.\n");
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sleep(5);
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}
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else
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{
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/* Give up on other errors */
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goto errout;
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}
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}
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/* If USB tracing is enabled, then dump all collected trace data to stdout */
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dumptrace();
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}
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while (g_usbterm.outstream == NULL);
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/* Open the USB serial device for reading. Since we are already connected, this
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* should not fail.
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*/
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g_usbterm.instream = fopen("/dev/ttyUSB0", "r");
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if (g_usbterm.instream == NULL)
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{
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message(MAIN_STRING "ERROR: Failed to open /dev/ttyUSB0 for reading: %d\n", errno);
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goto errout_with_outstream;
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}
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message(MAIN_STRING "Successfully opened the serial driver\n");
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/* Start the USB term listener thread */
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message(MAIN_STRING "Starting the listener thread\n");
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ret = pthread_attr_init(&attr);
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if (ret != OK)
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{
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message(MAIN_STRING "pthread_attr_init failed: %d\n", ret);
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goto errout_with_streams;
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}
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ret = pthread_create(&g_usbterm.listener, &attr,
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usbterm_listener, (pthread_addr_t)0);
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if (ret != 0)
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{
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message(MAIN_STRING "Error in thread creation: %d\n", ret);
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goto errout_with_streams;
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}
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/* Send messages and get responses -- forever */
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message(MAIN_STRING "Waiting for local input\n");
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for (;;)
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{
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/* Display the prompt string on stdout */
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fputs("usbterm> ", stdout);
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fflush(stdout);
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/* Get the next line of input from stdin */
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if (fgets(g_usbterm.outbuffer, CONFIG_EXAMPLES_USBTERM_BUFLEN, stdin))
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{
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/* Send the line of input via USB */
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fputs(g_usbterm.outbuffer, g_usbterm.outstream);
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/* Display the prompt string on the remote USB serial connection */
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fputs("\rusbterm> ", g_usbterm.outstream);
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fflush(g_usbterm.outstream);
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}
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/* If USB tracing is enabled, then dump all collected trace data to stdout */
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dumptrace();
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}
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/* Error exits */
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errout_with_streams:
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fclose(g_usbterm.instream);
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errout_with_outstream:
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fclose(g_usbterm.outstream);
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errout:
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message(MAIN_STRING " Aborting\n");
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return 1;
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}
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