Tunnel Sample for Arduino

/**
 * Include headers
 */
#include <SoftwareSerial.h>

SoftwareSerial Tunnel(10, 11); // RX, TX
byte data;

/**
 * Arduino default setup function, runs only once when the device is turned on
 */
void setup() {
    Tunnel.begin(9600);
    Serial.begin(9600);
    Serial.println(F("// ---- Tunnel 9600"));
}

/**
 * Arduino default loop function, always runs until device turns off
 */
void loop() {
    if (Tunnel.available() > 0) {
        data = Tunnel.read();
        Serial.write(data);
    }
    if (Serial.available() > 0) {
        data = Serial.read();
        Tunnel.write(data);
    }
}