97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
#ifdef HAS_RTC
|
|
|
|
#include "rtctime.h"
|
|
|
|
// Local logging tag
|
|
static const char TAG[] = "main";
|
|
|
|
RtcDS3231<TwoWire> Rtc(Wire); // RTC hardware i2c interface
|
|
|
|
// initialize RTC
|
|
int rtc_init(void) {
|
|
|
|
// return = 0 -> error / return = 1 -> success
|
|
|
|
// block i2c bus access
|
|
if (I2C_MUTEX_LOCK()) {
|
|
|
|
Wire.begin(HAS_RTC);
|
|
Rtc.Begin();
|
|
|
|
RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
|
|
|
|
if (!Rtc.IsDateTimeValid()) {
|
|
ESP_LOGW(TAG,
|
|
"RTC has no valid RTC date/time, setting to compilation date");
|
|
Rtc.SetDateTime(compiled);
|
|
}
|
|
|
|
if (!Rtc.GetIsRunning()) {
|
|
ESP_LOGI(TAG, "RTC not running, starting now");
|
|
Rtc.SetIsRunning(true);
|
|
}
|
|
|
|
RtcDateTime now = Rtc.GetDateTime();
|
|
|
|
if (now < compiled) {
|
|
ESP_LOGI(TAG, "RTC date/time is older than compilation date, updating");
|
|
Rtc.SetDateTime(compiled);
|
|
}
|
|
|
|
// configure RTC chip
|
|
Rtc.Enable32kHzPin(false);
|
|
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone);
|
|
|
|
} else {
|
|
ESP_LOGE(TAG, "I2c bus busy - RTC initialization error");
|
|
goto error;
|
|
}
|
|
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
ESP_LOGI(TAG, "RTC initialized");
|
|
return 1;
|
|
|
|
error:
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
return 0;
|
|
|
|
} // rtc_init()
|
|
|
|
int set_rtctime(RtcDateTime t) {
|
|
if (I2C_MUTEX_LOCK()) {
|
|
Rtc.SetDateTime(t);
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
return 1; // success
|
|
}
|
|
return 0; // failure
|
|
} // set_rtctime()
|
|
|
|
int set_rtctime(uint32_t t) { return set_rtctime(RtcDateTime(t)); };
|
|
|
|
time_t get_rtctime(void) {
|
|
// never call now() in this function, this would cause a recursion!
|
|
time_t t = 0;
|
|
// block i2c bus access
|
|
if (I2C_MUTEX_LOCK()) {
|
|
if (Rtc.IsDateTimeValid()) {
|
|
RtcDateTime tt = Rtc.GetDateTime();
|
|
t = tt.Epoch32Time();
|
|
} else {
|
|
ESP_LOGW(TAG, "RTC has no confident time");
|
|
}
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
}
|
|
return t;
|
|
} // get_rtctime()
|
|
|
|
float get_rtctemp(void) {
|
|
// block i2c bus access
|
|
if (I2C_MUTEX_LOCK()) {
|
|
RtcTemperature temp = Rtc.GetTemperature();
|
|
I2C_MUTEX_UNLOCK(); // release i2c bus access
|
|
return temp.AsFloatDegC();
|
|
} // while
|
|
return 0;
|
|
} // get_rtctemp()
|
|
|
|
#endif // HAS_RTC
|