Hello. I want to know whether someone have succesfully used ESP32 USART1? From what I know, ESP32 has 3 USART ports.
If I am correct, USART1 is tied up to the internal flash and not recommended to use.See:
I really need an additional USART for my project.
USART0 is being used for programming the device and logging.
USART1 - not currently used but I want to use it for something else
USART2 - used for communicating with GSM module.