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117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
/****************************************************************************
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*
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* Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
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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 PX4 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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* @file sim.cpp
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*
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* Base class for simulated devices.
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*
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* @todo Bus frequency changes; currently we do nothing with the value
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* that is supplied. Should we just depend on the bus knowing?
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*/
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#include <px4_log.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "sim.h"
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namespace device
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{
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SIM::SIM(const char *name,
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const char *devname,
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int bus,
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uint16_t address) :
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// base class
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Device(name),
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// public
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// protected
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// private
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_bus(bus),
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_address(address),
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_devname(devname)
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{
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PX4_DEBUG("SIM::SIM name = %s devname = %s", name, devname);
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// fill in _device_id fields for a SIM device
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_device_id.devid_s.bus_type = DeviceBusType_SIM;
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_device_id.devid_s.bus = bus;
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_device_id.devid_s.address = address;
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// devtype needs to be filled in by the driver
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_device_id.devid_s.devtype = 0;
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}
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SIM::~SIM()
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{
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}
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int
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SIM::init()
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{
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int ret = PX4_OK;
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// Assume the driver set the desired bus frequency. There is no standard
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// way to set it from user space.
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// do base class init, which registers the virtual driver
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ret = Device::init();
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if (ret != PX4_OK) {
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PX4_ERR("VDev::init failed");
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return ret;
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}
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return ret;
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}
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int
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SIM::transfer(const uint8_t *send, unsigned send_len, uint8_t *recv, unsigned recv_len)
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{
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if (send_len > 0) {
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PX4_DEBUG("SIM: sending %d bytes", send_len);
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}
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if (recv_len > 0) {
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PX4_DEBUG("SIM: receiving %d bytes", recv_len);
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// TODO - write data to recv;
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}
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PX4_DEBUG("I2C SIM: transfer_4 on %s", _devname);
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return PX4_OK;
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}
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} // namespace device
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