Damian Gabino / picoGW_mcu

MCU driver/HAL for the Picocell Gateway concentrator board. The firmware implements either a USB CDC protocol or a UART protocol to bridge commands coming from host to the SX1308 SPI interface.

src/mbed-dev/common/CAN.cpp@0:c76361bd82e8, 2018-04-11 (annotated)

Committer:
dgabino
Date:
Wed Apr 11 14:42:47 2018 +0000
Revision:
0:c76361bd82e8
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dgabino 0:c76361bd82e8 1 /* mbed Microcontroller Library
dgabino 0:c76361bd82e8 2 * Copyright (c) 2006-2013 ARM Limited
dgabino 0:c76361bd82e8 3 *
dgabino 0:c76361bd82e8 4 * Licensed under the Apache License, Version 2.0 (the "License");
dgabino 0:c76361bd82e8 5 * you may not use this file except in compliance with the License.
dgabino 0:c76361bd82e8 6 * You may obtain a copy of the License at
dgabino 0:c76361bd82e8 7 *
dgabino 0:c76361bd82e8 8 * http://www.apache.org/licenses/LICENSE-2.0
dgabino 0:c76361bd82e8 9 *
dgabino 0:c76361bd82e8 10 * Unless required by applicable law or agreed to in writing, software
dgabino 0:c76361bd82e8 11 * distributed under the License is distributed on an "AS IS" BASIS,
dgabino 0:c76361bd82e8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dgabino 0:c76361bd82e8 13 * See the License for the specific language governing permissions and
dgabino 0:c76361bd82e8 14 * limitations under the License.
dgabino 0:c76361bd82e8 15 */
dgabino 0:c76361bd82e8 16 #include "CAN.h"
dgabino 0:c76361bd82e8 17
dgabino 0:c76361bd82e8 18 #if DEVICE_CAN
dgabino 0:c76361bd82e8 19
dgabino 0:c76361bd82e8 20 #include "cmsis.h"
dgabino 0:c76361bd82e8 21
dgabino 0:c76361bd82e8 22 namespace mbed {
dgabino 0:c76361bd82e8 23
dgabino 0:c76361bd82e8 24 CAN::CAN(PinName rd, PinName td) : _can(), _irq() {
dgabino 0:c76361bd82e8 25 // No lock needed in constructor
dgabino 0:c76361bd82e8 26 can_init(&_can, rd, td);
dgabino 0:c76361bd82e8 27 can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this);
dgabino 0:c76361bd82e8 28 }
dgabino 0:c76361bd82e8 29
dgabino 0:c76361bd82e8 30 CAN::~CAN() {
dgabino 0:c76361bd82e8 31 // No lock needed in destructor
dgabino 0:c76361bd82e8 32 can_irq_free(&_can);
dgabino 0:c76361bd82e8 33 can_free(&_can);
dgabino 0:c76361bd82e8 34 }
dgabino 0:c76361bd82e8 35
dgabino 0:c76361bd82e8 36 int CAN::frequency(int f) {
dgabino 0:c76361bd82e8 37 lock();
dgabino 0:c76361bd82e8 38 int ret = can_frequency(&_can, f);
dgabino 0:c76361bd82e8 39 unlock();
dgabino 0:c76361bd82e8 40 return ret;
dgabino 0:c76361bd82e8 41 }
dgabino 0:c76361bd82e8 42
dgabino 0:c76361bd82e8 43 int CAN::write(CANMessage msg) {
dgabino 0:c76361bd82e8 44 lock();
dgabino 0:c76361bd82e8 45 int ret = can_write(&_can, msg, 0);
dgabino 0:c76361bd82e8 46 unlock();
dgabino 0:c76361bd82e8 47 return ret;
dgabino 0:c76361bd82e8 48 }
dgabino 0:c76361bd82e8 49
dgabino 0:c76361bd82e8 50 int CAN::read(CANMessage &msg, int handle) {
dgabino 0:c76361bd82e8 51 lock();
dgabino 0:c76361bd82e8 52 int ret = can_read(&_can, &msg, handle);
dgabino 0:c76361bd82e8 53 unlock();
dgabino 0:c76361bd82e8 54 return ret;
dgabino 0:c76361bd82e8 55 }
dgabino 0:c76361bd82e8 56
dgabino 0:c76361bd82e8 57 void CAN::reset() {
dgabino 0:c76361bd82e8 58 lock();
dgabino 0:c76361bd82e8 59 can_reset(&_can);
dgabino 0:c76361bd82e8 60 unlock();
dgabino 0:c76361bd82e8 61 }
dgabino 0:c76361bd82e8 62
dgabino 0:c76361bd82e8 63 unsigned char CAN::rderror() {
dgabino 0:c76361bd82e8 64 lock();
dgabino 0:c76361bd82e8 65 int ret = can_rderror(&_can);
dgabino 0:c76361bd82e8 66 unlock();
dgabino 0:c76361bd82e8 67 return ret;
dgabino 0:c76361bd82e8 68 }
dgabino 0:c76361bd82e8 69
dgabino 0:c76361bd82e8 70 unsigned char CAN::tderror() {
dgabino 0:c76361bd82e8 71 lock();
dgabino 0:c76361bd82e8 72 int ret = can_tderror(&_can);
dgabino 0:c76361bd82e8 73 unlock();
dgabino 0:c76361bd82e8 74 return ret;
dgabino 0:c76361bd82e8 75 }
dgabino 0:c76361bd82e8 76
dgabino 0:c76361bd82e8 77 void CAN::monitor(bool silent) {
dgabino 0:c76361bd82e8 78 lock();
dgabino 0:c76361bd82e8 79 can_monitor(&_can, (silent) ? 1 : 0);
dgabino 0:c76361bd82e8 80 unlock();
dgabino 0:c76361bd82e8 81 }
dgabino 0:c76361bd82e8 82
dgabino 0:c76361bd82e8 83 int CAN::mode(Mode mode) {
dgabino 0:c76361bd82e8 84 lock();
dgabino 0:c76361bd82e8 85 int ret = can_mode(&_can, (CanMode)mode);
dgabino 0:c76361bd82e8 86 unlock();
dgabino 0:c76361bd82e8 87 return ret;
dgabino 0:c76361bd82e8 88 }
dgabino 0:c76361bd82e8 89
dgabino 0:c76361bd82e8 90 int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) {
dgabino 0:c76361bd82e8 91 lock();
dgabino 0:c76361bd82e8 92 int ret = can_filter(&_can, id, mask, format, handle);
dgabino 0:c76361bd82e8 93 unlock();
dgabino 0:c76361bd82e8 94 return ret;
dgabino 0:c76361bd82e8 95 }
dgabino 0:c76361bd82e8 96
dgabino 0:c76361bd82e8 97 void CAN::attach(Callback<void()> func, IrqType type) {
dgabino 0:c76361bd82e8 98 lock();
dgabino 0:c76361bd82e8 99 if (func) {
dgabino 0:c76361bd82e8 100 _irq[(CanIrqType)type].attach(func);
dgabino 0:c76361bd82e8 101 can_irq_set(&_can, (CanIrqType)type, 1);
dgabino 0:c76361bd82e8 102 } else {
dgabino 0:c76361bd82e8 103 can_irq_set(&_can, (CanIrqType)type, 0);
dgabino 0:c76361bd82e8 104 }
dgabino 0:c76361bd82e8 105 unlock();
dgabino 0:c76361bd82e8 106 }
dgabino 0:c76361bd82e8 107
dgabino 0:c76361bd82e8 108 void CAN::_irq_handler(uint32_t id, CanIrqType type) {
dgabino 0:c76361bd82e8 109 CAN *handler = (CAN*)id;
dgabino 0:c76361bd82e8 110 handler->_irq[type].call();
dgabino 0:c76361bd82e8 111 }
dgabino 0:c76361bd82e8 112
dgabino 0:c76361bd82e8 113 void CAN::lock() {
dgabino 0:c76361bd82e8 114 _mutex.lock();
dgabino 0:c76361bd82e8 115 }
dgabino 0:c76361bd82e8 116
dgabino 0:c76361bd82e8 117 void CAN::unlock() {
dgabino 0:c76361bd82e8 118 _mutex.unlock();
dgabino 0:c76361bd82e8 119 }
dgabino 0:c76361bd82e8 120
dgabino 0:c76361bd82e8 121 } // namespace mbed
dgabino 0:c76361bd82e8 122
dgabino 0:c76361bd82e8 123 #endif