80 lines
2.1 KiB
C
Executable File
80 lines
2.1 KiB
C
Executable File
/*
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ChibiOS - Copyright (C) 2006..2018 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 TCConfig tccfg = {
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{
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{TC_OUTPUT_DISABLED, 0, NULL}, /* Channel 0. */
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{TC_OUTPUT_ACTIVE, 440 , NULL}, /* Channel 1, 440 hz clock frequency. */
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{TC_OUTPUT_DISABLED, 0, NULL} /* Channel 2. */
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}
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};
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/*
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* Buzzer thread, times are in milliseconds.
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*/
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static THD_WORKING_AREA(waThread1, 512);
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static THD_FUNCTION(Thread1, arg) {
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(void)arg;
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chRegSetThreadName("buzzer");
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while (true) {
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tcEnableChannel(&TCD0, 1, 50);
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palClearLine(LINE_LED_RED);
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chThdSleepMilliseconds(500);
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tcDisableChannel(&TCD0, 1);
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palSetLine(LINE_LED_RED);
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chThdSleepMilliseconds(500);
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}
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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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tcInit();
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chSysInit();
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/*
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* Initializes the TC0 driver.
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* PD11 is the TC0 channel 1 output.
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*/
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palSetGroupMode(PIOD, PAL_PORT_BIT(11), 0U,
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PAL_SAMA_FUNC_PERIPH_A | PAL_MODE_SECURE);
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tcStart(&TCD0, &tccfg);
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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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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