Serial1 in Feather MO

Projects Programming
1

Dear all,
I have been trying to create serial1 in Feather MO, using pins RX and TX, with the code attached, based on the links;

#include <Arduino.h>   // required before wiring_private.h
#include "wiring_private.h" // pinPeripheral() function
 

//Uart Serial1( &sercom0, PIN_SERIAL1_RX, PIN_SERIAL1_TX, PAD_SERIAL1_RX, PAD_SERIAL1_TX ) ;
Uart Serial1( &sercom0, 0, 1, PAD_SERIAL1_RX, PAD_SERIAL1_TX ) ;

 void SERCOM0_Handler()
{
  Serial1.IrqHandler();
}

void setup() {
  Serial.begin(115200);
 
  Serial1.begin(115200);

  // Assign pins 0 & 1 SERCOM functionality
  pinPeripheral(0, PIO_SERCOM);
  pinPeripheral(1, PIO_SERCOM);
}
 
uint8_t i=0;
void loop() {
  Serial.print(i);
  Serial1.write(i++);
  if (Serial1.available()) {
    Serial.print(" -> 0x"); Serial.print(Serial1.read(), HEX);
  }
  Serial.println();
  
  delay(10);
 
}

However, it just doesn't work and I got the following error message;

Error compiling for board Adafruit Feather M0

I real thanks for any help about.

Cesar

2

Langoni:
n have been trying to create serial1 in Feather MO, using pins RX and TX

Why? Serial1 is already there, you are just duplicating existing code.

3

Because in principle I tried and it didn't work. So after reading the link I assumed it was necessary to implement this part of the code. In the end, it doesn't work either way.
Interestingly, I can generate serial2 without problems on pins 10 and 11 as suggested by the link text, but that's it. Serial1 does not work.

4

As at Adafruit forum.

5

Yes, and I still try to be positive as per the forum request