1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "hal.h"
RTCTime timespec;
RTCAlarm alarmspec;
#define TEST_ALARM_WAKEUP FALSE
#if TEST_ALARM_WAKEUP
/* sleep indicator 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;
}
int main(void) {
halInit();
chSysInit();
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();
/* going to anabiosis*/
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 10
BinarySemaphore alarm_sem;
static void my_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;
}
}
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, my_cb);
while (TRUE){
/* Wait until alarm callback signaled semaphore.*/
status = chBSemWaitTimeout(&alarm_sem, S2ST(RTC_ALARMPERIOD + 5));
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 */
|
