86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
#include "rtctime.h"
|
|
|
|
// Local logging tag
|
|
static const char TAG[] = __FILE__;
|
|
|
|
#ifdef HAS_RTC // we have hardware RTC
|
|
|
|
RtcDS3231<TwoWire> Rtc(Wire); // RTC hardware i2c interface
|
|
|
|
// initialize RTC
|
|
uint8_t rtc_init(void) {
|
|
|
|
if (I2C_MUTEX_LOCK()) { // block i2c bus access
|
|
|
|
Wire.begin(HAS_RTC);
|
|
Rtc.Begin();
|
|
|
|
// configure RTC chip
|
|
Rtc.Enable32kHzPin(false);
|
|
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone);
|
|
|
|
if (!Rtc.GetIsRunning()) {
|
|
ESP_LOGI(TAG, "RTC not running, starting now");
|
|
Rtc.SetIsRunning(true);
|
|
}
|
|
|
|
#if (TIME_SYNC_COMPILEDATE)
|
|
// initialize a blank RTC without battery backup with compiled time
|
|
RtcDateTime tt = Rtc.GetDateTime();
|
|
time_t t = tt.Epoch32Time(); // sec2000 -> epoch
|
|
|
|
if (!Rtc.IsDateTimeValid() || !timeIsValid(t)) {
|
|
ESP_LOGW(TAG, "RTC has no recent time, setting to compiled time");
|
|
Rtc.SetDateTime(
|
|
RtcDateTime(compiledUTC() - SECS_YR_2000)); // epoch -> sec2000
|
|
}
|
|
#endif
|
|
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
ESP_LOGI(TAG, "RTC initialized");
|
|
return 1; // success
|
|
} else {
|
|
ESP_LOGE(TAG, "RTC initialization error, I2C bus busy");
|
|
return 0; // failure
|
|
}
|
|
|
|
} // rtc_init()
|
|
|
|
uint8_t set_rtctime(time_t t) { // t is UTC in seconds epoch time
|
|
if (I2C_MUTEX_LOCK()) {
|
|
Rtc.SetDateTime(RtcDateTime(t - SECS_YR_2000)); // epoch -> sec2000
|
|
#ifdef RTC_INT // sync rtc 1Hz pulse on top of second
|
|
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone); // off
|
|
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeClock); // start
|
|
#endif
|
|
I2C_MUTEX_UNLOCK();
|
|
ESP_LOGI(TAG, "RTC time synced");
|
|
return 1; // success
|
|
} else {
|
|
ESP_LOGE(TAG, "RTC set time failure");
|
|
return 0;
|
|
} // failure
|
|
} // set_rtctime()
|
|
|
|
time_t get_rtctime(void) {
|
|
time_t t = 0;
|
|
if (I2C_MUTEX_LOCK()) {
|
|
if (Rtc.IsDateTimeValid() && Rtc.GetIsRunning()) {
|
|
RtcDateTime tt = Rtc.GetDateTime();
|
|
t = tt.Epoch32Time(); // sec2000 -> epoch
|
|
}
|
|
I2C_MUTEX_UNLOCK();
|
|
}
|
|
return timeIsValid(t);
|
|
} // get_rtctime()
|
|
|
|
float get_rtctemp(void) {
|
|
if (I2C_MUTEX_LOCK()) {
|
|
RtcTemperature temp = Rtc.GetTemperature();
|
|
I2C_MUTEX_UNLOCK();
|
|
return temp.AsFloatDegC();
|
|
}
|
|
return 0;
|
|
} // get_rtctemp()
|
|
|
|
#endif // HAS_RTC
|