Thor Hall / mbed-dev_mbed_lib_v125

This fork captures the mbed lib v125 for ease of integration into older projects.

Fork of mbed-dev by mbed official

common/CAN.cpp@187:92cbb9eec47b, 2018-07-20 (annotated)

Committer:
apluscw
Date:
Fri Jul 20 21:24:42 2018 +0000
Revision:
187:92cbb9eec47b
Mbed library with source code from mbed lib v125. Posted to ease integration with some older projects.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
apluscw 187:92cbb9eec47b 1 /* mbed Microcontroller Library
apluscw 187:92cbb9eec47b 2 * Copyright (c) 2006-2013 ARM Limited
apluscw 187:92cbb9eec47b 3 *
apluscw 187:92cbb9eec47b 4 * Licensed under the Apache License, Version 2.0 (the "License");
apluscw 187:92cbb9eec47b 5 * you may not use this file except in compliance with the License.
apluscw 187:92cbb9eec47b 6 * You may obtain a copy of the License at
apluscw 187:92cbb9eec47b 7 *
apluscw 187:92cbb9eec47b 8 * http://www.apache.org/licenses/LICENSE-2.0
apluscw 187:92cbb9eec47b 9 *
apluscw 187:92cbb9eec47b 10 * Unless required by applicable law or agreed to in writing, software
apluscw 187:92cbb9eec47b 11 * distributed under the License is distributed on an "AS IS" BASIS,
apluscw 187:92cbb9eec47b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
apluscw 187:92cbb9eec47b 13 * See the License for the specific language governing permissions and
apluscw 187:92cbb9eec47b 14 * limitations under the License.
apluscw 187:92cbb9eec47b 15 */
apluscw 187:92cbb9eec47b 16 #include "CAN.h"
apluscw 187:92cbb9eec47b 17
apluscw 187:92cbb9eec47b 18 #if DEVICE_CAN
apluscw 187:92cbb9eec47b 19
apluscw 187:92cbb9eec47b 20 #include "cmsis.h"
apluscw 187:92cbb9eec47b 21
apluscw 187:92cbb9eec47b 22 namespace mbed {
apluscw 187:92cbb9eec47b 23
apluscw 187:92cbb9eec47b 24 CAN::CAN(PinName rd, PinName td) : _can(), _irq() {
apluscw 187:92cbb9eec47b 25 // No lock needed in constructor
apluscw 187:92cbb9eec47b 26 can_init(&_can, rd, td);
apluscw 187:92cbb9eec47b 27 can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this);
apluscw 187:92cbb9eec47b 28 }
apluscw 187:92cbb9eec47b 29
apluscw 187:92cbb9eec47b 30 CAN::~CAN() {
apluscw 187:92cbb9eec47b 31 // No lock needed in destructor
apluscw 187:92cbb9eec47b 32 can_irq_free(&_can);
apluscw 187:92cbb9eec47b 33 can_free(&_can);
apluscw 187:92cbb9eec47b 34 }
apluscw 187:92cbb9eec47b 35
apluscw 187:92cbb9eec47b 36 int CAN::frequency(int f) {
apluscw 187:92cbb9eec47b 37 lock();
apluscw 187:92cbb9eec47b 38 int ret = can_frequency(&_can, f);
apluscw 187:92cbb9eec47b 39 unlock();
apluscw 187:92cbb9eec47b 40 return ret;
apluscw 187:92cbb9eec47b 41 }
apluscw 187:92cbb9eec47b 42
apluscw 187:92cbb9eec47b 43 int CAN::write(CANMessage msg) {
apluscw 187:92cbb9eec47b 44 lock();
apluscw 187:92cbb9eec47b 45 int ret = can_write(&_can, msg, 0);
apluscw 187:92cbb9eec47b 46 unlock();
apluscw 187:92cbb9eec47b 47 return ret;
apluscw 187:92cbb9eec47b 48 }
apluscw 187:92cbb9eec47b 49
apluscw 187:92cbb9eec47b 50 int CAN::read(CANMessage &msg, int handle) {
apluscw 187:92cbb9eec47b 51 lock();
apluscw 187:92cbb9eec47b 52 int ret = can_read(&_can, &msg, handle);
apluscw 187:92cbb9eec47b 53 unlock();
apluscw 187:92cbb9eec47b 54 return ret;
apluscw 187:92cbb9eec47b 55 }
apluscw 187:92cbb9eec47b 56
apluscw 187:92cbb9eec47b 57 void CAN::reset() {
apluscw 187:92cbb9eec47b 58 lock();
apluscw 187:92cbb9eec47b 59 can_reset(&_can);
apluscw 187:92cbb9eec47b 60 unlock();
apluscw 187:92cbb9eec47b 61 }
apluscw 187:92cbb9eec47b 62
apluscw 187:92cbb9eec47b 63 unsigned char CAN::rderror() {
apluscw 187:92cbb9eec47b 64 lock();
apluscw 187:92cbb9eec47b 65 int ret = can_rderror(&_can);
apluscw 187:92cbb9eec47b 66 unlock();
apluscw 187:92cbb9eec47b 67 return ret;
apluscw 187:92cbb9eec47b 68 }
apluscw 187:92cbb9eec47b 69
apluscw 187:92cbb9eec47b 70 unsigned char CAN::tderror() {
apluscw 187:92cbb9eec47b 71 lock();
apluscw 187:92cbb9eec47b 72 int ret = can_tderror(&_can);
apluscw 187:92cbb9eec47b 73 unlock();
apluscw 187:92cbb9eec47b 74 return ret;
apluscw 187:92cbb9eec47b 75 }
apluscw 187:92cbb9eec47b 76
apluscw 187:92cbb9eec47b 77 void CAN::monitor(bool silent) {
apluscw 187:92cbb9eec47b 78 lock();
apluscw 187:92cbb9eec47b 79 can_monitor(&_can, (silent) ? 1 : 0);
apluscw 187:92cbb9eec47b 80 unlock();
apluscw 187:92cbb9eec47b 81 }
apluscw 187:92cbb9eec47b 82
apluscw 187:92cbb9eec47b 83 int CAN::mode(Mode mode) {
apluscw 187:92cbb9eec47b 84 lock();
apluscw 187:92cbb9eec47b 85 int ret = can_mode(&_can, (CanMode)mode);
apluscw 187:92cbb9eec47b 86 unlock();
apluscw 187:92cbb9eec47b 87 return ret;
apluscw 187:92cbb9eec47b 88 }
apluscw 187:92cbb9eec47b 89
apluscw 187:92cbb9eec47b 90 int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) {
apluscw 187:92cbb9eec47b 91 lock();
apluscw 187:92cbb9eec47b 92 int ret = can_filter(&_can, id, mask, format, handle);
apluscw 187:92cbb9eec47b 93 unlock();
apluscw 187:92cbb9eec47b 94 return ret;
apluscw 187:92cbb9eec47b 95 }
apluscw 187:92cbb9eec47b 96
apluscw 187:92cbb9eec47b 97 void CAN::attach(Callback<void()> func, IrqType type) {
apluscw 187:92cbb9eec47b 98 lock();
apluscw 187:92cbb9eec47b 99 if (func) {
apluscw 187:92cbb9eec47b 100 _irq[(CanIrqType)type].attach(func);
apluscw 187:92cbb9eec47b 101 can_irq_set(&_can, (CanIrqType)type, 1);
apluscw 187:92cbb9eec47b 102 } else {
apluscw 187:92cbb9eec47b 103 can_irq_set(&_can, (CanIrqType)type, 0);
apluscw 187:92cbb9eec47b 104 }
apluscw 187:92cbb9eec47b 105 unlock();
apluscw 187:92cbb9eec47b 106 }
apluscw 187:92cbb9eec47b 107
apluscw 187:92cbb9eec47b 108 void CAN::_irq_handler(uint32_t id, CanIrqType type) {
apluscw 187:92cbb9eec47b 109 CAN *handler = (CAN*)id;
apluscw 187:92cbb9eec47b 110 handler->_irq[type].call();
apluscw 187:92cbb9eec47b 111 }
apluscw 187:92cbb9eec47b 112
apluscw 187:92cbb9eec47b 113 void CAN::lock() {
apluscw 187:92cbb9eec47b 114 _mutex.lock();
apluscw 187:92cbb9eec47b 115 }
apluscw 187:92cbb9eec47b 116
apluscw 187:92cbb9eec47b 117 void CAN::unlock() {
apluscw 187:92cbb9eec47b 118 _mutex.unlock();
apluscw 187:92cbb9eec47b 119 }
apluscw 187:92cbb9eec47b 120
apluscw 187:92cbb9eec47b 121 } // namespace mbed
apluscw 187:92cbb9eec47b 122
apluscw 187:92cbb9eec47b 123 #endif