// 
// SparkFun Electronics 2011
// NPoole
//
// RF ASK Transmitter/Reciever Example
//
// This code depends on the VirtualWire Library for Arduino and is
// based on the example code provided by Mike McCauley (mikem@open.com.au)
// See VirtualWire.h for detailed API docs. 
//
// This example shows how to use the VirtualWire library to send and receive
// simple messages and use them to control digital I/O pins. Buttons are 
// connected to the transmitting Arduino on pins 8-11 (to ground, internal 20k
// pull-up resistors are set in the code) and in the same fashion,
// LEDs are connected to the recieving Arduino on pins 8-11. When a button is
// pressed on the transmitter, the corresponding LED will light on the reciever.
// This document contains both transmitter and reciever code, simply de-comment 
// the piece of code you need to use.




/* TRANSMITTER CODE

#include <VirtualWire.h>

void setup()
{
    Serial.begin(9600);	  // Debugging only
    Serial.println("setup");

    // Initialise the IO and ISR
    vw_set_ptt_inverted(true); // Required for DR3100
    vw_setup(2000);	 // Bits per sec
        vw_set_tx_pin(3); 
        
        pinMode(8, INPUT);
        pinMode(9, INPUT);
        pinMode(10, INPUT);
        pinMode(11, INPUT);

digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
digitalWrite(11, HIGH);

}

void loop()
{
  char *msg;
  
  if(digitalRead(8) == LOW){
    char *msg = "1";
      digitalWrite(13, true); // Flash a light to show transmitting
    vw_send((uint8_t *)msg, strlen(msg));
    vw_wait_tx(); // Wait until the whole message is gone
    digitalWrite(13, false);}
  if(digitalRead(9) == LOW){
    char *msg = "2";
      digitalWrite(13, true); // Flash a light to show transmitting
    vw_send((uint8_t *)msg, strlen(msg));
    vw_wait_tx(); // Wait until the whole message is gone
    digitalWrite(13, false);}
  if(digitalRead(10) == LOW){
    char *msg = "3";
      digitalWrite(13, true); // Flash a light to show transmitting
    vw_send((uint8_t *)msg, strlen(msg));
    vw_wait_tx(); // Wait until the whole message is gone
    digitalWrite(13, false);}
  if(digitalRead(11) == LOW){
    char *msg = "4";
      digitalWrite(13, true); // Flash a light to show transmitting
    vw_send((uint8_t *)msg, strlen(msg));
    vw_wait_tx(); // Wait until the whole message is gone
    digitalWrite(13, false);}
  }
  
  END TRANSMITTER CODE */ 
  
  //*******************************************************************************************//
  
  /* RECIEVER CODE
  
  #include <VirtualWire.h>

void setup()
{
    Serial.begin(9600);	// Debugging only
    Serial.println("setup");

    // Initialise the IO and ISR
    vw_set_ptt_inverted(true); // Required for DR3100
    vw_setup(2000);	 // Bits per sec
    vw_set_rx_pin(2);
    vw_rx_start();       // Start the receiver PLL running

pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
}

void loop()
{
  
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  
    uint8_t buf[VW_MAX_MESSAGE_LEN];
    uint8_t buflen = VW_MAX_MESSAGE_LEN;

    if (vw_get_message(buf, &buflen)) // Non-blocking
    {
	int i;

        digitalWrite(13, true); // Flash a light to show received good message
	// Message with a good checksum received, dump it.
	Serial.print("Got: ");
	
	for (i = 0; i < buflen; i++)
	{
	    Serial.print(buf[i]);
        if(buf[i] == '1'){digitalWrite(8, HIGH);}
        if(buf[i] == '2'){digitalWrite(9, HIGH);}
        if(buf[i] == '3'){digitalWrite(10, HIGH);}
        if(buf[i] == '4'){digitalWrite(11, HIGH);}
	    Serial.print(" ");
	}
	Serial.println("");
        digitalWrite(13, false);

   }
}