#include <HardwareSerial.h>
HardwareSerial SerialPort(2); // use UART2
char number = ' ';
int LED = 15;
void setup()
{
    Serial.begin(9600);
    SerialPort.begin(15200, SERIAL_8N1, 16, 17);
    pinMode(LED, OUTPUT);
}
void loop()
{
    if (SerialPort.available())
    {
       char number = SerialPort.read();
       if (number == '0') {
       digitalWrite(LED, LOW);
       Serial.print("0"); /* verification reception 0 */
       }
       if (number == '1') {
          digitalWrite(LED, HIGH);
          Serial.print("1"); /* verification reception 1 */
       }
   }
}