Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

hal/common/CAN.cpp@1:d96dbedaebdb, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:54:50 2016 +0000
Revision:
1:d96dbedaebdb
Parent:
0:6c56fb4bc5f0 
Removed extra directories for other platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /* mbed Microcontroller Library
nexpaq 0:6c56fb4bc5f0 2 * Copyright (c) 2006-2013 ARM Limited
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Licensed under the Apache License, Version 2.0 (the "License");
nexpaq 0:6c56fb4bc5f0 5 * you may not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 6 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 7 *
nexpaq 0:6c56fb4bc5f0 8 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 9 *
nexpaq 0:6c56fb4bc5f0 10 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 11 * distributed under the License is distributed on an "AS IS" BASIS,
nexpaq 0:6c56fb4bc5f0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 13 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 14 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 15 */
nexpaq 0:6c56fb4bc5f0 16 #include "CAN.h"
nexpaq 0:6c56fb4bc5f0 17
nexpaq 0:6c56fb4bc5f0 18 #if DEVICE_CAN
nexpaq 0:6c56fb4bc5f0 19
nexpaq 0:6c56fb4bc5f0 20 #include "cmsis.h"
nexpaq 0:6c56fb4bc5f0 21
nexpaq 0:6c56fb4bc5f0 22 namespace mbed {
nexpaq 0:6c56fb4bc5f0 23
nexpaq 0:6c56fb4bc5f0 24 static void donothing() {}
nexpaq 0:6c56fb4bc5f0 25
nexpaq 0:6c56fb4bc5f0 26 CAN::CAN(PinName rd, PinName td) : _can(), _irq() {
nexpaq 0:6c56fb4bc5f0 27 // No lock needed in constructor
nexpaq 0:6c56fb4bc5f0 28
nexpaq 0:6c56fb4bc5f0 29 for (int i = 0; i < sizeof _irq / sizeof _irq[0]; i++) {
nexpaq 0:6c56fb4bc5f0 30 _irq[i].attach(donothing);
nexpaq 0:6c56fb4bc5f0 31 }
nexpaq 0:6c56fb4bc5f0 32
nexpaq 0:6c56fb4bc5f0 33 can_init(&_can, rd, td);
nexpaq 0:6c56fb4bc5f0 34 can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this);
nexpaq 0:6c56fb4bc5f0 35 }
nexpaq 0:6c56fb4bc5f0 36
nexpaq 0:6c56fb4bc5f0 37 CAN::~CAN() {
nexpaq 0:6c56fb4bc5f0 38 // No lock needed in destructor
nexpaq 0:6c56fb4bc5f0 39 can_irq_free(&_can);
nexpaq 0:6c56fb4bc5f0 40 can_free(&_can);
nexpaq 0:6c56fb4bc5f0 41 }
nexpaq 0:6c56fb4bc5f0 42
nexpaq 0:6c56fb4bc5f0 43 int CAN::frequency(int f) {
nexpaq 0:6c56fb4bc5f0 44 lock();
nexpaq 0:6c56fb4bc5f0 45 int ret = can_frequency(&_can, f);
nexpaq 0:6c56fb4bc5f0 46 unlock();
nexpaq 0:6c56fb4bc5f0 47 return ret;
nexpaq 0:6c56fb4bc5f0 48 }
nexpaq 0:6c56fb4bc5f0 49
nexpaq 0:6c56fb4bc5f0 50 int CAN::write(CANMessage msg) {
nexpaq 0:6c56fb4bc5f0 51 lock();
nexpaq 0:6c56fb4bc5f0 52 int ret = can_write(&_can, msg, 0);
nexpaq 0:6c56fb4bc5f0 53 unlock();
nexpaq 0:6c56fb4bc5f0 54 return ret;
nexpaq 0:6c56fb4bc5f0 55 }
nexpaq 0:6c56fb4bc5f0 56
nexpaq 0:6c56fb4bc5f0 57 int CAN::read(CANMessage &msg, int handle) {
nexpaq 0:6c56fb4bc5f0 58 lock();
nexpaq 0:6c56fb4bc5f0 59 int ret = can_read(&_can, &msg, handle);
nexpaq 0:6c56fb4bc5f0 60 unlock();
nexpaq 0:6c56fb4bc5f0 61 return ret;
nexpaq 0:6c56fb4bc5f0 62 }
nexpaq 0:6c56fb4bc5f0 63
nexpaq 0:6c56fb4bc5f0 64 void CAN::reset() {
nexpaq 0:6c56fb4bc5f0 65 lock();
nexpaq 0:6c56fb4bc5f0 66 can_reset(&_can);
nexpaq 0:6c56fb4bc5f0 67 unlock();
nexpaq 0:6c56fb4bc5f0 68 }
nexpaq 0:6c56fb4bc5f0 69
nexpaq 0:6c56fb4bc5f0 70 unsigned char CAN::rderror() {
nexpaq 0:6c56fb4bc5f0 71 lock();
nexpaq 0:6c56fb4bc5f0 72 int ret = can_rderror(&_can);
nexpaq 0:6c56fb4bc5f0 73 unlock();
nexpaq 0:6c56fb4bc5f0 74 return ret;
nexpaq 0:6c56fb4bc5f0 75 }
nexpaq 0:6c56fb4bc5f0 76
nexpaq 0:6c56fb4bc5f0 77 unsigned char CAN::tderror() {
nexpaq 0:6c56fb4bc5f0 78 lock();
nexpaq 0:6c56fb4bc5f0 79 int ret = can_tderror(&_can);
nexpaq 0:6c56fb4bc5f0 80 unlock();
nexpaq 0:6c56fb4bc5f0 81 return ret;
nexpaq 0:6c56fb4bc5f0 82 }
nexpaq 0:6c56fb4bc5f0 83
nexpaq 0:6c56fb4bc5f0 84 void CAN::monitor(bool silent) {
nexpaq 0:6c56fb4bc5f0 85 lock();
nexpaq 0:6c56fb4bc5f0 86 can_monitor(&_can, (silent) ? 1 : 0);
nexpaq 0:6c56fb4bc5f0 87 unlock();
nexpaq 0:6c56fb4bc5f0 88 }
nexpaq 0:6c56fb4bc5f0 89
nexpaq 0:6c56fb4bc5f0 90 int CAN::mode(Mode mode) {
nexpaq 0:6c56fb4bc5f0 91 lock();
nexpaq 0:6c56fb4bc5f0 92 int ret = can_mode(&_can, (CanMode)mode);
nexpaq 0:6c56fb4bc5f0 93 unlock();
nexpaq 0:6c56fb4bc5f0 94 return ret;
nexpaq 0:6c56fb4bc5f0 95 }
nexpaq 0:6c56fb4bc5f0 96
nexpaq 0:6c56fb4bc5f0 97 int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) {
nexpaq 0:6c56fb4bc5f0 98 lock();
nexpaq 0:6c56fb4bc5f0 99 int ret = can_filter(&_can, id, mask, format, handle);
nexpaq 0:6c56fb4bc5f0 100 unlock();
nexpaq 0:6c56fb4bc5f0 101 return ret;
nexpaq 0:6c56fb4bc5f0 102 }
nexpaq 0:6c56fb4bc5f0 103
nexpaq 0:6c56fb4bc5f0 104 void CAN::attach(Callback<void()> func, IrqType type) {
nexpaq 0:6c56fb4bc5f0 105 lock();
nexpaq 0:6c56fb4bc5f0 106 if (func) {
nexpaq 0:6c56fb4bc5f0 107 _irq[(CanIrqType)type].attach(func);
nexpaq 0:6c56fb4bc5f0 108 can_irq_set(&_can, (CanIrqType)type, 1);
nexpaq 0:6c56fb4bc5f0 109 } else {
nexpaq 0:6c56fb4bc5f0 110 _irq[(CanIrqType)type].attach(donothing);
nexpaq 0:6c56fb4bc5f0 111 can_irq_set(&_can, (CanIrqType)type, 0);
nexpaq 0:6c56fb4bc5f0 112 }
nexpaq 0:6c56fb4bc5f0 113 unlock();
nexpaq 0:6c56fb4bc5f0 114 }
nexpaq 0:6c56fb4bc5f0 115
nexpaq 0:6c56fb4bc5f0 116 void CAN::_irq_handler(uint32_t id, CanIrqType type) {
nexpaq 0:6c56fb4bc5f0 117 CAN *handler = (CAN*)id;
nexpaq 0:6c56fb4bc5f0 118 handler->_irq[type].call();
nexpaq 0:6c56fb4bc5f0 119 }
nexpaq 0:6c56fb4bc5f0 120
nexpaq 0:6c56fb4bc5f0 121 void CAN::lock() {
nexpaq 0:6c56fb4bc5f0 122 _mutex.lock();
nexpaq 0:6c56fb4bc5f0 123 }
nexpaq 0:6c56fb4bc5f0 124
nexpaq 0:6c56fb4bc5f0 125 void CAN::unlock() {
nexpaq 0:6c56fb4bc5f0 126 _mutex.unlock();
nexpaq 0:6c56fb4bc5f0 127 }
nexpaq 0:6c56fb4bc5f0 128
nexpaq 0:6c56fb4bc5f0 129 } // namespace mbed
nexpaq 0:6c56fb4bc5f0 130
nexpaq 0:6c56fb4bc5f0 131 #endif