erriez / erriezds1307 Goto Github PK

Maybe add:
/*!

• \brief Convert to Unix UTC epoch time_t
• \return

•  Unix epoch time_t seconds since 1970.
  

*/
time_t ErriezDS1307::getEpoch(struct tm *rdt)
{
time_t t;

// Convert date/time struct tm to time_t
t = mktime(rdt);

// An offset is needed for AVR target

#ifdef ARDUINO_ARCH_AVR
t += UNIX_OFFSET;
#endif

// Return Unix epoch UTC
return t;

}

It helped me to get an automatic RTC update based on Compiled time&date in my application:
if (rtc.read(&rtc_dt))
{
Serial.println("Time fetched from RTC IC....");
}
else
{
Serial.println("Time NOT fetched from RTC IC....");
}

if (rtc.getEpoch(&dt) > rtc.getEpoch(&rtc_dt))
{
// Set new date time
Serial.print(F("Set RTC date time..."));
if (!rtc.write(&dt)) {
Serial.println(F("FAILED"));
} else {
Serial.println(F("OK"));
}
}
And of course no battery yet installed.

Hi, this routine is giving me error in Platform IO for ESP32 Devkit:

...
uint8_t gv_hour;
ErriezDS1307 rtc;
Wire.begin();
Wire.setClock(100000);

if (!rtc.setDateTime(08, 55, 00,  25, 11, 2021, 4)) {
...

invalid digit "8" in octal constant
invalid octal digit

If I set the hour to 8, then the function doesn't work at all and throws error.
Only setting hours from 10-23 works fine.
Same goes for minutes and seconds...
Can you please help me overcome this little issue?

It is not working on esp32 on ports that you mention in the table, maybe there is a slip-up with it. I tested it on Arduino Uno and it works great with the same RTC. With the Example that U posted I get a debug "RTC not found". I'm also not connected to the SQW pin on the RTC, but I think it is not required to just get/set time. It could be my fault but IDK.