Chau Vo / mbed-dev

mbed library sources. Supersedes mbed-src. RTC working even after reset

Fork of mbed-dev by mbed official

common/CAN.cpp@148:161ebc35dc3a, 2016-09-28 (annotated)

Committer:
olympux
Date:
Wed Sep 28 20:59:47 2016 +0000
Revision:
148:161ebc35dc3a
Parent:
144:ef7eb2e8f9f7 
RTC working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "CAN.h"
<> 144:ef7eb2e8f9f7 17
<> 144:ef7eb2e8f9f7 18 #if DEVICE_CAN
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 #include "cmsis.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 namespace mbed {
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 CAN::CAN(PinName rd, PinName td) : _can(), _irq() {
<> 144:ef7eb2e8f9f7 25 // No lock needed in constructor
<> 144:ef7eb2e8f9f7 26 can_init(&_can, rd, td);
<> 144:ef7eb2e8f9f7 27 can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this);
<> 144:ef7eb2e8f9f7 28 }
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 CAN::~CAN() {
<> 144:ef7eb2e8f9f7 31 // No lock needed in destructor
<> 144:ef7eb2e8f9f7 32 can_irq_free(&_can);
<> 144:ef7eb2e8f9f7 33 can_free(&_can);
<> 144:ef7eb2e8f9f7 34 }
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 int CAN::frequency(int f) {
<> 144:ef7eb2e8f9f7 37 lock();
<> 144:ef7eb2e8f9f7 38 int ret = can_frequency(&_can, f);
<> 144:ef7eb2e8f9f7 39 unlock();
<> 144:ef7eb2e8f9f7 40 return ret;
<> 144:ef7eb2e8f9f7 41 }
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 int CAN::write(CANMessage msg) {
<> 144:ef7eb2e8f9f7 44 lock();
<> 144:ef7eb2e8f9f7 45 int ret = can_write(&_can, msg, 0);
<> 144:ef7eb2e8f9f7 46 unlock();
<> 144:ef7eb2e8f9f7 47 return ret;
<> 144:ef7eb2e8f9f7 48 }
<> 144:ef7eb2e8f9f7 49
<> 144:ef7eb2e8f9f7 50 int CAN::read(CANMessage &msg, int handle) {
<> 144:ef7eb2e8f9f7 51 lock();
<> 144:ef7eb2e8f9f7 52 int ret = can_read(&_can, &msg, handle);
<> 144:ef7eb2e8f9f7 53 unlock();
<> 144:ef7eb2e8f9f7 54 return ret;
<> 144:ef7eb2e8f9f7 55 }
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 void CAN::reset() {
<> 144:ef7eb2e8f9f7 58 lock();
<> 144:ef7eb2e8f9f7 59 can_reset(&_can);
<> 144:ef7eb2e8f9f7 60 unlock();
<> 144:ef7eb2e8f9f7 61 }
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 unsigned char CAN::rderror() {
<> 144:ef7eb2e8f9f7 64 lock();
<> 144:ef7eb2e8f9f7 65 int ret = can_rderror(&_can);
<> 144:ef7eb2e8f9f7 66 unlock();
<> 144:ef7eb2e8f9f7 67 return ret;
<> 144:ef7eb2e8f9f7 68 }
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 unsigned char CAN::tderror() {
<> 144:ef7eb2e8f9f7 71 lock();
<> 144:ef7eb2e8f9f7 72 int ret = can_tderror(&_can);
<> 144:ef7eb2e8f9f7 73 unlock();
<> 144:ef7eb2e8f9f7 74 return ret;
<> 144:ef7eb2e8f9f7 75 }
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 void CAN::monitor(bool silent) {
<> 144:ef7eb2e8f9f7 78 lock();
<> 144:ef7eb2e8f9f7 79 can_monitor(&_can, (silent) ? 1 : 0);
<> 144:ef7eb2e8f9f7 80 unlock();
<> 144:ef7eb2e8f9f7 81 }
<> 144:ef7eb2e8f9f7 82
<> 144:ef7eb2e8f9f7 83 int CAN::mode(Mode mode) {
<> 144:ef7eb2e8f9f7 84 lock();
<> 144:ef7eb2e8f9f7 85 int ret = can_mode(&_can, (CanMode)mode);
<> 144:ef7eb2e8f9f7 86 unlock();
<> 144:ef7eb2e8f9f7 87 return ret;
<> 144:ef7eb2e8f9f7 88 }
<> 144:ef7eb2e8f9f7 89
<> 144:ef7eb2e8f9f7 90 int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) {
<> 144:ef7eb2e8f9f7 91 lock();
<> 144:ef7eb2e8f9f7 92 int ret = can_filter(&_can, id, mask, format, handle);
<> 144:ef7eb2e8f9f7 93 unlock();
<> 144:ef7eb2e8f9f7 94 return ret;
<> 144:ef7eb2e8f9f7 95 }
<> 144:ef7eb2e8f9f7 96
<> 144:ef7eb2e8f9f7 97 void CAN::attach(Callback<void()> func, IrqType type) {
<> 144:ef7eb2e8f9f7 98 lock();
<> 144:ef7eb2e8f9f7 99 if (func) {
<> 144:ef7eb2e8f9f7 100 _irq[(CanIrqType)type].attach(func);
<> 144:ef7eb2e8f9f7 101 can_irq_set(&_can, (CanIrqType)type, 1);
<> 144:ef7eb2e8f9f7 102 } else {
<> 144:ef7eb2e8f9f7 103 can_irq_set(&_can, (CanIrqType)type, 0);
<> 144:ef7eb2e8f9f7 104 }
<> 144:ef7eb2e8f9f7 105 unlock();
<> 144:ef7eb2e8f9f7 106 }
<> 144:ef7eb2e8f9f7 107
<> 144:ef7eb2e8f9f7 108 void CAN::_irq_handler(uint32_t id, CanIrqType type) {
<> 144:ef7eb2e8f9f7 109 CAN *handler = (CAN*)id;
<> 144:ef7eb2e8f9f7 110 handler->_irq[type].call();
<> 144:ef7eb2e8f9f7 111 }
<> 144:ef7eb2e8f9f7 112
<> 144:ef7eb2e8f9f7 113 void CAN::lock() {
<> 144:ef7eb2e8f9f7 114 _mutex.lock();
<> 144:ef7eb2e8f9f7 115 }
<> 144:ef7eb2e8f9f7 116
<> 144:ef7eb2e8f9f7 117 void CAN::unlock() {
<> 144:ef7eb2e8f9f7 118 _mutex.unlock();
<> 144:ef7eb2e8f9f7 119 }
<> 144:ef7eb2e8f9f7 120
<> 144:ef7eb2e8f9f7 121 } // namespace mbed
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 #endif