/* Software serial multiple serial test Receives from the hardware serial, sends to software serial. Receives from software serial, sends to hardware serial. The circuit: * RX is digital pin 9 (connect to TX of other device) * TX is digital pin 10 (connect to RX of other device) Note: You shouldn't use pin 2 This example code is in the public domain. */ #include SoftwareSerial mySerial(9, 10); // RX, TX void setup() { // Open serial communications and wait for port to open: SerialUSB.begin(115200); SerialUSB.println("Goodnight moon!"); // set the data rate for the SoftwareSerial port mySerial.begin(9600); mySerial.println("Hello, world?"); } void loop() // run over and over// { if (mySerial.available()) SerialUSB.write(mySerial.read()); if (SerialUSB.available()) mySerial.write(SerialUSB.read()); }