94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
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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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#if !defined(SYSTEM_CLOCK)
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#define SYSTEM_CLOCK 8000000U
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#endif
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/*
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* @brief System Timer handler.
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*/
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CH_IRQ_HANDLER(SysTick_Handler) {
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CH_IRQ_PROLOGUE();
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chSysLockFromISR();
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chSysTimerHandlerI();
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chSysUnlockFromISR();
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CH_IRQ_EPILOGUE();
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}
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static uint32_t seconds_counter;
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static uint32_t minutes_counter;
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/*
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* Seconds counter thread.
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*/
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static THD_WORKING_AREA(waThread1, 128);
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static THD_FUNCTION(Thread1, arg) {
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(void)arg;
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chRegSetThreadName("counter");
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while (true) {
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chThdSleepMilliseconds(1000);
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seconds_counter++;
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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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* Hardware initialization, in this simple demo just the systick timer is
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* initialized.
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*/
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SysTick->LOAD = SYSTEM_CLOCK / CH_CFG_ST_FREQUENCY - (systime_t)1;
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SysTick->VAL = (uint32_t)0;
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk |
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SysTick_CTRL_TICKINT_Msk;
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/* IRQ enabled.*/
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NVIC_SetPriority(SysTick_IRQn, 1);
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/*
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* System 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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chSysInit();
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/*
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* Creates the example thread.
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*/
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(void) 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 except
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* increasing the minutes counter.
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*/
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while (true) {
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chThdSleepSeconds(60);
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minutes_counter++;
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}
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}
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