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/*
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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 "ch.h"
#include "hal.h"
/*
* Local self test mode.
*/
static const CANConfig cancfg = {
CANMOD_STM,
CANBTR_SJW(0) | CANBTR_TESG2(1) |
CANBTR_TESG1(8) | CANBTR_BRP(20)
};
/*
* Receiver thread.
*/
static WORKING_AREA(can_rx1_wa, 256);
static msg_t can_rx(void *p) {
EventListener el;
CANRxFrame rxmsg;
(void)p;
chRegSetThreadName("receiver");
chEvtRegister(&CAND1.rxfull_event, &el, 0);
while(!chThdShouldTerminate()) {
if (chEvtWaitAnyTimeout(ALL_EVENTS, MS2ST(100)) == 0)
continue;
while (canReceive(&CAND1, CAN_ANY_MAILBOX,
&rxmsg, TIME_IMMEDIATE) == RDY_OK) {
/* Process message.*/
palTogglePad(GPIO0, GPIO0_LED2_RED);
}
}
chEvtUnregister(&CAND1.rxfull_event, &el);
return 0;
}
/*
* Transmitter thread.
*/
static WORKING_AREA(can_tx_wa, 256);
static msg_t can_tx(void * p) {
CANTxFrame txmsg;
(void)p;
chRegSetThreadName("transmitter");
txmsg.IDE = CAN_IDE_EXT;
txmsg.EID = 0x01234567;
txmsg.RTR = CAN_RTR_DATA;
txmsg.DLC = 8;
txmsg.data32[0] = 0x55AA55AA;
txmsg.data32[1] = 0x00FF00FF;
while (!chThdShouldTerminate()) {
canTransmit(&CAND1, CAN_ANY_MAILBOX, &txmsg, MS2ST(100));
chThdSleepMilliseconds(500);
}
return 0;
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Activates the CAN drivers 1.
*/
canStart(&CAND1, &cancfg);
/*
* Starting the transmitter and receiver threads.
*/
chThdCreateStatic(can_rx1_wa, sizeof(can_rx1_wa), NORMALPRIO + 7,
can_rx, NULL);
chThdCreateStatic(can_tx_wa, sizeof(can_tx_wa), NORMALPRIO + 7,
can_tx, NULL);
/*
* Normal main() thread activity, in this demo it does nothing.
*/
while (TRUE) {
chThdSleepMilliseconds(500);
}
return 0;
}
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