166 lines
4.0 KiB
C
166 lines
4.0 KiB
C
/*
|
|
ChibiOS - Copyright (C) 2006..2018 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"
|
|
|
|
#define BUFFER 5
|
|
|
|
static virtual_timer_t vt3, vt4, vt5;
|
|
static const uint8_t message[] = {'a','b','c','d','e','f'};
|
|
static uint8_t buffer[BUFFER];
|
|
|
|
static void led3off(void *p) {
|
|
|
|
(void)p;
|
|
palSetLine(LINE_LED_RED);
|
|
}
|
|
|
|
static void led4off(void *p) {
|
|
|
|
(void)p;
|
|
palSetLine(LINE_LED_GREEN);
|
|
}
|
|
|
|
static void led5off(void *p) {
|
|
|
|
(void)p;
|
|
palSetLine(LINE_LED_BLUE);
|
|
}
|
|
|
|
/*
|
|
* This callback is invoked when a transmission buffer has been completely
|
|
* read by the driver.
|
|
*/
|
|
static void txend1(UARTDriver *uartp) {
|
|
|
|
(void)uartp;
|
|
}
|
|
|
|
/*
|
|
* This callback is invoked when a transmission has physically completed.
|
|
*/
|
|
static void txend2(UARTDriver *uartp) {
|
|
|
|
(void)uartp;
|
|
palClearLine(LINE_LED_BLUE);
|
|
chSysLockFromISR();
|
|
chVTResetI(&vt5);
|
|
chVTSetI(&vt5, TIME_MS2I(200), led5off, NULL);
|
|
chSysUnlockFromISR();
|
|
}
|
|
|
|
/*
|
|
* This callback is invoked on a receive error, the errors mask is passed
|
|
* as parameter.
|
|
*/
|
|
static void rxerr(UARTDriver *uartp, uartflags_t e) {
|
|
|
|
(void)uartp;
|
|
(void)e;
|
|
}
|
|
|
|
/*
|
|
* This callback is invoked when a character is received but the application
|
|
* was not ready to receive it, the character is passed as parameter.
|
|
*/
|
|
static void rxchar(UARTDriver *uartp, uint16_t c) {
|
|
|
|
(void)uartp;
|
|
(void)c;
|
|
/* Flashing the LED each time a character is received.*/
|
|
palClearLine(LINE_LED_GREEN);
|
|
chSysLockFromISR();
|
|
chVTResetI(&vt4);
|
|
chVTSetI(&vt4, TIME_MS2I(200), led4off, NULL);
|
|
chSysUnlockFromISR();
|
|
}
|
|
|
|
/*
|
|
* This callback is invoked when a receive buffer has been completely written.
|
|
*/
|
|
static void rxend(UARTDriver *uartp) {
|
|
|
|
(void)uartp;
|
|
|
|
palClearLine(LINE_LED_RED);
|
|
chSysLockFromISR();
|
|
chVTResetI(&vt3);
|
|
chVTSetI(&vt3, TIME_MS2I(200), led3off, NULL);
|
|
chSysUnlockFromISR();
|
|
}
|
|
|
|
/*
|
|
* UART driver configuration structure.
|
|
*/
|
|
static UARTConfig uart_cfg_1 = {
|
|
txend1,
|
|
txend2,
|
|
rxend,
|
|
rxchar,
|
|
rxerr,
|
|
NULL,
|
|
0,
|
|
38400, /* Baud rate */
|
|
0, /* CR register */
|
|
US_MR_CHRL_8_BIT | US_MR_PAR_NO /* MR register */
|
|
};
|
|
|
|
/*
|
|
* 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 flexcom uart driver 0.
|
|
* PB28 and PB29 are routed to FLEXCOM0.
|
|
*/
|
|
uartStart(&FUARTD0, &uart_cfg_1);
|
|
|
|
/* Redirecting UART FLEXCOM0 RX on PB28 and UART FLEXCOM0 TX on PB29. */
|
|
palSetGroupMode(PIOB, PAL_PORT_BIT(28) | PAL_PORT_BIT(29), 0U,
|
|
PAL_SAMA_FUNC_PERIPH_C | PAL_MODE_SECURE);
|
|
|
|
/*
|
|
* Normal main() thread activity, in this demo it does nothing except
|
|
* increasing the minutes counter.
|
|
*/
|
|
while (true) {
|
|
if (!palReadPad(PIOB, PIOB_USER_PB)) {
|
|
/*
|
|
* Starts both a transmission and a receive operations, both will be
|
|
* handled entirely in background.
|
|
*/
|
|
uartStopReceive(&FUARTD0);
|
|
uartStopSend(&FUARTD0);
|
|
uartStartReceive(&FUARTD0, BUFFER, buffer);
|
|
uartStartSend(&FUARTD0, BUFFER+1, message);
|
|
}
|
|
chThdSleepMilliseconds(500);
|
|
}
|
|
}
|