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Merge pull request #16258 from maribu/cpu/sam3/periph_rtt

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cpu/sam3/periph_rtt: fix rtt_get_alarm()
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Marian Buschsieweke 2021-03-30 17:47:30 +02:00 committed by GitHub
commit ca8641c213
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2 changed files with 6 additions and 3 deletions
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3
cpu/sam3/periph/rtt.c
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@ -75,7 +75,8 @@ void rtt_set_alarm(uint32_t alarm, rtt_cb_t cb, void *arg)
uint32_t rtt_get_alarm(void) uint32_t rtt_get_alarm(void)
{ {
if (RTT->RTT_MR & RTT_MR_ALMIEN) { if (RTT->RTT_MR & RTT_MR_ALMIEN) {
return RTT->RTT_AR; /* the alarm value is RTT_AR + 1, see rtt_set_alarm() */
return RTT->RTT_AR + 1;
} }
return 0; return 0;
} }

6
tests/periph_rtt/main.c
View File

@ -93,8 +93,10 @@ int main(void)
printf("Setting initial alarm to now + 5 s (%" PRIu32 ")\n", last); printf("Setting initial alarm to now + 5 s (%" PRIu32 ")\n", last);
rtt_set_alarm(last, cb, 0); rtt_set_alarm(last, cb, 0);
if (rtt_get_alarm() != last) { uint32_t tmp = rtt_get_alarm();
puts("Error: rtt_get_alarm() not working"); if (tmp != last) {
printf("Error: rtt_get_alarm() not working (expected %" PRIu32 " but got %" PRIu32 ")\n",
last, tmp);
return 1; return 1;
} }
else { else {