j3d1/esp-open-rtos
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fix build warning

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This commit is contained in:
Rutger Huijgen 2020-04-18 15:29:50 +02:00
parent 312073ccfd
commit c97ef10267
1 changed files with 6 additions and 8 deletions
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14
extras/sntp/sntp_fun.c
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@ -35,11 +35,6 @@
// Calibration value
#define cal (RTC.SCRATCH[3])
#ifndef SKIP_DIAGNOSTICS
// Keep the last time SNTP updated the time
static struct timeval last_update_time = {0, 0};
#endif
// To protect access to the above.
static SemaphoreHandle_t sntp_sem = NULL;
@ -70,10 +65,11 @@ void sntp_initialize(const struct timezone *tz) {
}
sntp_base = 0;
// To avoid div by 0 exceptions if requesting time before SNTP config
cal = sdk_system_rtc_clock_cali_proc();
cal = 1;
tim_ref = TIMER_COUNT;
sntp_sem = xSemaphoreCreateMutex();
assert(sntp_sem == NULL);
sntp_init();
}
@ -120,13 +116,15 @@ void sntp_update_rtc(time_t t, uint32_t us) {
xSemaphoreTake(sntp_sem, portMAX_DELAY);
uint32_t tim = TIMER_COUNT;
tim_ref = tim;
sntp_base = sntp_correct;
#ifndef SKIP_DIAGNOSTICS
// Assume the difference does not overflow in which case
// wrapping of the RTC timer still yields a good difference.
uint32_t diff = tim - tim_ref;
tim_ref = tim;
uint64_t diff_us = ((uint64_t)diff * cal) >> 12;
uint64_t sntp_current = sntp_base + diff_us;
sntp_base = sntp_correct;
#endif
cal = sdk_system_rtc_clock_cali_proc();
xSemaphoreGive(sntp_sem);