What will happen if i set the drive strength of a pin output to 20mA and the load will be 50mA?

Is there any way i can choose the timer ?

With the new timer API v3.0 and above, i could not find where i choose the timer i want to use.

In the previous API v2.X we had to declare "timer = timerBegin(1, 80, true); means Timer 1, prescaler 80 → 1 MHz (1 µs ticks)".
In the new API, where can i choose timer 3 for example ?

I have no solution yet. I think that i must include the i2s_write function in an interrupt - task, so i can use it, only when the buffer will be empty. I read in this forum that i can trigger an event when the buffer is empty but i couldn't understand it. i want to learn more about the function ...

I use the following code to reproduce an audio file with ESP32 --> I2S --> MAX98357A with success.

I want to add a software volume, so i add the code in comments. When i uncomment this part of the code the result is very noisy.
Do you have any suggestions ?


#include "driver/i2s.h"
#include ...