New serial begin method for ESP32 to allow the user to specify the cor…

[NicoBocki]

New serial begin method for ESP32, that allows to specify custom RX TX pins. As any pin can be used for this.

[ladyada]

we prefer not to have specialized functions for chips - its hard to maintain. what if you set up the Serial object pins then pass it in as a HardwareSerial reference?

[NicoBocki]

@ladyada

Hello i can not set the pins before serial begin is executed:

https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/HardwareSerial.h
espressif/arduino-esp32#7040

In my opinion it is not convenient to set the pins after calling the library method to start communication.

finger.begin(57600);
Serial2.setPins(9, 10);

When a new sample application is provided, for the esp32 it will be ok.
For beginners it is not so nice to use the UART

[ladyada]

OK but without the changes to the library, does this initialization work?

finger = Adafruit_Fingerprint(&Serial2);
finger.begin(57600);
Serial2.setPins(9, 10);

[ladyada]

no response