mbed library sources. Supersedes mbed-src. Add PORTG support for STM32L476JG (SensorTile kit)
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drivers/CAN.cpp
- Committer:
- shaoziyang
- Date:
- 2017-01-02
- Revision:
- 154:1375a99fb16d
- Parent:
- 149:156823d33999
File content as of revision 154:1375a99fb16d:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "drivers/CAN.h" #if DEVICE_CAN #include "cmsis.h" namespace mbed { static void donothing() {} CAN::CAN(PinName rd, PinName td) : _can(), _irq() { // No lock needed in constructor for (int i = 0; i < sizeof _irq / sizeof _irq[0]; i++) { _irq[i].attach(donothing); } can_init(&_can, rd, td); can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this); } CAN::~CAN() { // No lock needed in destructor can_irq_free(&_can); can_free(&_can); } int CAN::frequency(int f) { lock(); int ret = can_frequency(&_can, f); unlock(); return ret; } int CAN::write(CANMessage msg) { lock(); int ret = can_write(&_can, msg, 0); unlock(); return ret; } int CAN::read(CANMessage &msg, int handle) { lock(); int ret = can_read(&_can, &msg, handle); unlock(); return ret; } void CAN::reset() { lock(); can_reset(&_can); unlock(); } unsigned char CAN::rderror() { lock(); int ret = can_rderror(&_can); unlock(); return ret; } unsigned char CAN::tderror() { lock(); int ret = can_tderror(&_can); unlock(); return ret; } void CAN::monitor(bool silent) { lock(); can_monitor(&_can, (silent) ? 1 : 0); unlock(); } int CAN::mode(Mode mode) { lock(); int ret = can_mode(&_can, (CanMode)mode); unlock(); return ret; } int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) { lock(); int ret = can_filter(&_can, id, mask, format, handle); unlock(); return ret; } void CAN::attach(Callback<void()> func, IrqType type) { lock(); if (func) { _irq[(CanIrqType)type].attach(func); can_irq_set(&_can, (CanIrqType)type, 1); } else { _irq[(CanIrqType)type].attach(donothing); can_irq_set(&_can, (CanIrqType)type, 0); } unlock(); } void CAN::_irq_handler(uint32_t id, CanIrqType type) { CAN *handler = (CAN*)id; handler->_irq[type].call(); } void CAN::lock() { _mutex.lock(); } void CAN::unlock() { _mutex.unlock(); } } // namespace mbed #endif