143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2014 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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#include "chprintf.h"
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#define LED 7
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static icucnt_t width = 0;
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static icucnt_t period = 0;
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static thread_t *thread1 = NULL;
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static thread_t *thread2 = NULL;
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static thread_t *thread_main = NULL;
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static const uint32_t ICU_CLK = F_CPU / 1024;
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void width_cb(ICUDriver *icup) {
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width = icup->width;
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}
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void period_cb(ICUDriver *icup) {
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period = icup->period;
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chSysLockFromISR();
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chEvtSignalI(thread1, (eventmask_t) 1);
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chSysUnlockFromISR();
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}
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void overflow_cb(ICUDriver *icup) {
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chSysLockFromISR();
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chEvtSignalI(thread2, (eventmask_t) 1);
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chSysUnlockFromISR();
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}
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void output_single_cycle(const uint16_t low, const uint16_t high) {
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palClearPad(IOPORT2, LED);
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palClearPad(IOPORT4, 4);
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chThdSleepMilliseconds(low);
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palSetPad(IOPORT2, LED);
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palSetPad(IOPORT4, 4);
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chThdSleepMilliseconds(high);
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palClearPad(IOPORT2, LED);
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palClearPad(IOPORT4, 4);
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}
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static WORKING_AREA(waThread1, 64);
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static msg_t Thread1(void *arg) {
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BaseSequentialStream *serp = (BaseSequentialStream *) &SD1;
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thread1 = chThdGetSelfX();
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while (TRUE) {
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chEvtWaitAny((eventmask_t) 1);
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chprintf(serp, "WIDTH[%lu ms, %u ticks] PERIOD[%lu ms, %u ticks]\r\n",
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((uint32_t) width * 1000) / ICU_CLK,
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width,
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((uint32_t) period * 1000) / ICU_CLK,
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period);
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chEvtSignal(thread_main, (eventmask_t) 1);
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}
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return 0;
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}
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static WORKING_AREA(waThread2, 64);
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static msg_t Thread2(void *arg) {
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BaseSequentialStream *serp = (BaseSequentialStream *) &SD1;
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thread2 = chThdGetSelfX();
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while (TRUE) {
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chEvtWaitAny((eventmask_t) 1);
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chprintf(serp, "OVERFLOW\r\n");
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chEvtSignal(thread_main, (eventmask_t) 2);
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}
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return 0;
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}
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int main(void) {
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halInit();
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static ICUConfig icu3cfg = {
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ICU_INPUT_ACTIVE_HIGH,
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0, /* bogus frequency */
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width_cb,
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period_cb,
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overflow_cb,
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};
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palSetPadMode(IOPORT2, LED, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(IOPORT4, 4, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(IOPORT2, LED);
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palClearPad(IOPORT4, 4);
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sdStart(&SD1, NULL);
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icuStart(&ICUD3, &icu3cfg);
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chSysInit();
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thread_main = chThdGetSelfX();
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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chThdCreateStatic(waThread2, sizeof(waThread2), NORMALPRIO, Thread2, NULL);
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while (1) {
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BaseSequentialStream *serp = (BaseSequentialStream *) &SD1;
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chprintf(serp, "Testing 50 duty cycle\r\n");
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icuEnable(&ICUD3);
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output_single_cycle(500, 500);
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icuDisable(&ICUD3);
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chEvtWaitAny((eventmask_t) 3);
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chprintf(serp, "Testing 25 duty cycle\r\n");
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icuEnable(&ICUD3);
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output_single_cycle(250, 750);
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icuDisable(&ICUD3);
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chEvtWaitAny((eventmask_t) 3);
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chprintf(serp, "Testing 75 duty cycle\r\n");
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icuEnable(&ICUD3);
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output_single_cycle(750, 250);
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icuDisable(&ICUD3);
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chEvtWaitAny((eventmask_t) 3);
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chprintf(serp, "Testing overflow\r\n");
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icuEnable(&ICUD3);
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chEvtWaitAny((eventmask_t) 3);
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icuDisable(&ICUD3);
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}
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}
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