RF_Receiver

/*
rf_receiver
 This sketch will receive a rf signal, and decode it. If it conforms,
 it will proceed to toggle the state of a relay. Receiver on pin 3 (5)
 */
#include <VirtualWire.h>
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
int led = 1;
int lstate = 0;

void setup()
{
  //Serial.begin(9600);
  //Serial.println("Device is ready");
  // Initialize the IO and ISR
  vw_setup(2000); // Bits per sec
  vw_set_rx_pin(0);
  vw_rx_start(); // Start the receiver
  pinMode(led, OUTPUT);
  digitalWrite(led, HIGH);
}
void loop()
{
  char currState;
  if (vw_get_message(message, &messageLength)) // Non-blocking
  {
    //Serial.print("Received: ");
    for (int i = 0; i < messageLength; i++)
    {
      if (message[0] == 'L' && message[1] == '0' && message[2] == '1'){
        if (lstate == 0) {
          digitalWrite(led, HIGH);
          lstate = 1;
        } else {
          digitalWrite(led, LOW);
          lstate = 0;
        }
      }
      else if (message[0] == 'M' && message[1] == '0' && message[2] == '1' ){
        digitalWrite(led, LOW);
      }
      else {
        //Serial.write(message[2]);
      }
    }
    //Serial.println();
  }
}