Why esp32_delay = 50;

[linghuix]

I noticed that the library is quite slow when running on the ESP32 board. Then, I found the code "this->esp32_delay = 50;" Could you explain why you set this number?

[eborghi10]

I don't recall exactly why ESP32 only require this delay, but I suspect that a hundred microseconds should be more than enough (the current value is 50 ms).

Part of the code was taken from here and refactored.