settimeofday() not working

[dandydan51]

ESP-IDF documentation says use settimeofday() to set the RTC.

"To stop smooth time adjustment and update the current time immediately, use the POSIX function settimeofday()."

When I compile IDE (VSC) says settimeofday() not declared. Is there a library I need?

[ESP_Sprite]

Did you

Code: Select all

#include <sys/time.h>

?

[dandydan51]

Thank you. #include <sys/time.h> worked.

I have found no mention of sys/time.h anywhere in ESP-IDF documentation or examples. Where should I have found this information?

[MicroController]

https://docs.espressif.com/projects/esp ... rrent-time:

use the POSIX function settimeofday().

i.e. it's not an IDF function; that's why it's not specifically documented with the IDF.

The settimeofday () function is a standard function whose definition is mentioned in a header file in the C library named sys/time.h

(https://linuxhint.com/gettimeofday-settimeofday-c/)