Adding support for multiple hardware uarts to Wio Terminal

Products & Technology Wio Series
2

You can try to establish a soft serial port for communication, here is the code after successful testing

#include <SoftwareSerial.h>

SoftwareSerial mySerial(6, 8); // RX=A6, TX=A8

void setup()

{

  Serial.begin(115200);

  while (!Serial) {

  }

  Serial.println("Goodnight moon!");

  mySerial.begin(9600);

  mySerial.println("Hello, world?");

}

void loop()

{

  if (mySerial.available())

    Serial.write(mySerial.read());

  if (Serial.available())

    mySerial.write(Serial.read());

}

Hope it will help you