For the time being I will try usleep.
RMT looks promising also. Thank you for your answers.

Hello,

I would like to use nanosleep() function but I got this error on compile:
error: implicit declaration of function 'nanosleep' [-Werror=implicit-function-declaration]
nanosleep(&tim , &tim2);
^

My code looks like this:
#include "sdkconfig.h"
#include <stdio.h>
#include <time.h>
#include ...

Hello,
I want to read the device id from a TCS34725 but it returns the last byte written in the communiation. (In this case TCS34725_ID.)
I am using this code:

#include "esp_log.h"
#include "driver/gpio.h"
#include <driver/i2c.h>
#include "freertos/FreeRTOS.h"
#include <stdio.h>

using namespace ...