145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "ch.h"
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#include "hal.h"
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static VirtualTimer vt1, vt2;
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static void restart(void *p) {
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(void)p;
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chSysLockFromIsr();
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uartStartSendI(&UARTD1, 14, "Hello World!\r\n");
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chSysUnlockFromIsr();
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}
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static void ledoff(void *p) {
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(void)p;
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palClearPad(GPIOE, GPIOE_LED3_RED);
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}
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/*
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* This callback is invoked when a transmission buffer has been completely
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* read by the driver.
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*/
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static void txend1(UARTDriver *uartp) {
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(void)uartp;
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palSetPad(GPIOE, GPIOE_LED3_RED);
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}
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/*
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* This callback is invoked when a transmission has physically completed.
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*/
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static void txend2(UARTDriver *uartp) {
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(void)uartp;
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palClearPad(GPIOE, GPIOE_LED3_RED);
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chSysLockFromIsr();
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if (chVTIsArmedI(&vt1))
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chVTResetI(&vt1);
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chVTSetI(&vt1, MS2ST(5000), restart, NULL);
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chSysUnlockFromIsr();
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}
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/*
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* This callback is invoked on a receive error, the errors mask is passed
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* as parameter.
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*/
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static void rxerr(UARTDriver *uartp, uartflags_t e) {
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(void)uartp;
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(void)e;
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}
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/*
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* This callback is invoked when a character is received but the application
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* was not ready to receive it, the character is passed as parameter.
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*/
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static void rxchar(UARTDriver *uartp, uint16_t c) {
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(void)uartp;
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(void)c;
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/* Flashing the LED each time a character is received.*/
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palSetPad(GPIOE, GPIOE_LED3_RED);
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chSysLockFromIsr();
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if (chVTIsArmedI(&vt2))
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chVTResetI(&vt2);
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chVTSetI(&vt2, MS2ST(200), ledoff, NULL);
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chSysUnlockFromIsr();
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}
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/*
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* This callback is invoked when a receive buffer has been completely written.
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*/
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static void rxend(UARTDriver *uartp) {
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(void)uartp;
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}
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/*
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* UART driver configuration structure.
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*/
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static UARTConfig uart_cfg_1 = {
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txend1,
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txend2,
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rxend,
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rxchar,
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rxerr,
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38400,
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0,
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USART_CR2_LINEN,
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0
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};
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/*
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* Application entry point.
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*/
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int main(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Activates the serial driver 1, PA9 and PA10 are routed to USART1.
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*/
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uartStart(&UARTD1, &uart_cfg_1);
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palSetPadMode(GPIOA, 9, PAL_MODE_ALTERNATE(7)); /* USART1 TX. */
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palSetPadMode(GPIOA, 10, PAL_MODE_ALTERNATE(7)); /* USART1 RX. */
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/*
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* Starts the transmission, it will be handled entirely in background.
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*/
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uartStartSend(&UARTD1, 13, "Starting...\r\n");
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/*
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* Normal main() thread activity, in this demo it does nothing.
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*/
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while (TRUE) {
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chThdSleepMilliseconds(500);
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}
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}
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