Code: Select all
#include <HardwareSerial.h>
HardwareSerial S2(1);
HardwareSerial S3(2);
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
S2.begin(9600, SERIAL_8N1, 9, 10); //tx, rx
S3.begin(9600, SERIAL_8N1, 11, 12);
}
void loop() {
delay(3000);
Serial.println("test");
S3.write("hello");
while(S2.available()){
char RxChar = S2.read();
Serial.print(RxChar);
}
}