142 lines
3.0 KiB
C
142 lines
3.0 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 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"
|
|
|
|
#include "chrtclib.h"
|
|
|
|
/*
|
|
* Set this flag to TRUE for testing waking up from deep sleep
|
|
*/
|
|
#define TEST_ALARM_WAKEUP FALSE
|
|
|
|
/*
|
|
* Local working variables
|
|
*/
|
|
static RTCTime timespec;
|
|
static RTCAlarm alarmspec;
|
|
|
|
#if TEST_ALARM_WAKEUP
|
|
|
|
/*
|
|
* awake indication thread
|
|
*/
|
|
static WORKING_AREA(blinkWA, 128);
|
|
static msg_t blink_thd(void *arg){
|
|
(void)arg;
|
|
while (TRUE) {
|
|
chThdSleepMilliseconds(100);
|
|
palTogglePad(GPIOC, GPIOC_LED);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Application entry point.
|
|
*/
|
|
int main(void) {
|
|
halInit();
|
|
chSysInit();
|
|
|
|
/* start awake indicator thread */
|
|
chThdCreateStatic(blinkWA, sizeof(blinkWA), NORMALPRIO, blink_thd, NULL);
|
|
|
|
/* set alarm in near future */
|
|
rtcGetTime(&RTCD1, ×pec);
|
|
alarmspec.tv_sec = timespec.tv_sec + 30;
|
|
rtcSetAlarm(&RTCD1, 0, &alarmspec);
|
|
|
|
while (TRUE) {
|
|
chThdSleepSeconds(10);
|
|
chSysLock();
|
|
|
|
/* go sleep */
|
|
PWR->CR |= (PWR_CR_PDDS | PWR_CR_LPDS | PWR_CR_CSBF | PWR_CR_CWUF);
|
|
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
|
|
__WFI();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#else /* TEST_ALARM_WAKEUP */
|
|
|
|
/*
|
|
* Manually reloaded test alarm period.
|
|
*/
|
|
#define RTC_ALARMPERIOD 5
|
|
|
|
/*
|
|
* Semaphore for signaling from ISR to "main" thread
|
|
*/
|
|
static BinarySemaphore alarm_sem;
|
|
|
|
/*
|
|
* Global RTC callback function
|
|
*/
|
|
static void rtc_cb(RTCDriver *rtcp, rtcevent_t event) {
|
|
|
|
(void)rtcp;
|
|
|
|
switch (event) {
|
|
case RTC_EVENT_OVERFLOW:
|
|
palTogglePad(GPIOC, GPIOC_LED);
|
|
break;
|
|
case RTC_EVENT_SECOND:
|
|
/* palTogglePad(GPIOC, GPIOC_LED); */
|
|
break;
|
|
case RTC_EVENT_ALARM:
|
|
palTogglePad(GPIOC, GPIOC_LED);
|
|
chSysLockFromIsr();
|
|
chBSemSignalI(&alarm_sem);
|
|
chSysUnlockFromIsr();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Application entry point.
|
|
*/
|
|
int main(void) {
|
|
msg_t status = RDY_TIMEOUT;
|
|
|
|
halInit();
|
|
chSysInit();
|
|
chBSemInit(&alarm_sem, TRUE);
|
|
|
|
rtcGetTime(&RTCD1, ×pec);
|
|
alarmspec.tv_sec = timespec.tv_sec + RTC_ALARMPERIOD;
|
|
rtcSetAlarm(&RTCD1, 0, &alarmspec);
|
|
|
|
rtcSetCallback(&RTCD1, rtc_cb);
|
|
while (TRUE) {
|
|
|
|
/* Wait until alarm callback signaled semaphore.*/
|
|
status = chBSemWaitTimeout(&alarm_sem, S2ST(RTC_ALARMPERIOD + 10));
|
|
|
|
if (status == RDY_TIMEOUT) {
|
|
chSysHalt();
|
|
}
|
|
else {
|
|
rtcGetTime(&RTCD1, ×pec);
|
|
alarmspec.tv_sec = timespec.tv_sec + RTC_ALARMPERIOD;
|
|
rtcSetAlarm(&RTCD1, 0, &alarmspec);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
#endif /* TEST_ALARM_WAKEUP */
|