char val;

int ledpin=;

void setup()

{

  Serial.begin();

  pinMode(ledpin,OUTPUT);

}

void loop()

{

  val=Serial.read();

  if(val=='o')

  {

    digitalWrite(ledpin,HIGH);

    Serial.println("LED ON!");

  }else if(val=='f'){

  digitalWrite(ledpin,LOW);

Serial.println("LED OFF!");

  }

}

/* This project combines the code from a few different sources.

This project was put together by ScottC on the 15/01/2013

http://arduinobasics.blogspot.com/

Bluetooth slave code by Steve Chang - downloaded from :

http://www.seeedstudio.com/wiki/index.php?title=Bluetooth_Shield

Grove Chainable RGB code can be found here :

http://www.seeedstudio.com/wiki/Grove_-_Chainable_RGB_LED#Introduction

*/

#include <SoftwareSerial.h> //Software Serial Port

#define uint8 unsigned char

#define uint16 unsigned int

#define uint32 unsigned long int

#define RxD 6 // This is the pin that the Bluetooth (BT_TX) will transmit to the Arduino (RxD)

#define TxD 7 // This is the pin that the Bluetooth (BT_RX) will receive from the Arduino (TxD)

#define DEBUG_ENABLED 1

int Clkpin = ; //RGB LED Clock Pin (Digital 9)

int Datapin = ; //RGB LED Data Pin (Digital 8)

SoftwareSerial blueToothSerial(RxD,TxD);

/*----------------------SETUP----------------------------*/

void setup() {

 Serial.begin(); // Allow Serial communication via USB cable to computer (if required)

 pinMode(RxD, INPUT); // Setup the Arduino to receive INPUT from the bluetooth shield on Digital Pin 6

 pinMode(TxD, OUTPUT); // Setup the Arduino to send data (OUTPUT) to the bluetooth shield on Digital Pin 7

 pinMode(,OUTPUT); // Use onboard LED if required.

 setupBlueToothConnection(); //Used to initialise the Bluetooth shield

 pinMode(Datapin, OUTPUT); // Setup the RGB LED Data Pin

 pinMode(Clkpin, OUTPUT); // Setup the RGB LED Clock pin

} 

/*----------------------LOOP----------------------------*/

void loop() {

 digitalWrite(,LOW); //Turn off the onboard Arduino LED

 char recvChar;

 while(){

 if(blueToothSerial.available()){//check if there's any data sent from the remote bluetooth shield

 recvChar = blueToothSerial.read();

 Serial.print(recvChar); // Print the character received to the Serial Monitor (if required)

 //If the character received = 'r' , then change the RGB led to display a RED colour

 if(recvChar=='r'){

 Send32Zero(); // begin

 DataDealWithAndSend(, , ); // first node data

 Send32Zero(); // send to update data

 }

 //If the character received = 'g' , then change the RGB led to display a GREEN colour

 if(recvChar=='g'){

 Send32Zero(); // begin

 DataDealWithAndSend(, , ); // first node data

 Send32Zero(); // send to update data

 }

 //If the character received = 'b' , then change the RGB led to display a BLUE colour

 if(recvChar=='b'){

 Send32Zero(); // begin

 DataDealWithAndSend(, , ); // first node data

 Send32Zero(); // send to update data

 }

 }

 //You can use the following code to deal with any information coming from the Computer (serial monitor)

 if(Serial.available()){

 recvChar = Serial.read();

 //This will send value obtained (recvChar) to the phone. The value will be displayed on the phone.

 blueToothSerial.print(recvChar);

 }

 }

} 

//The following code is necessary to setup the bluetooth shield ------copy and paste----------------

void setupBlueToothConnection()

{

 blueToothSerial.begin(); //Set BluetoothBee BaudRate to default baud rate 38400

 blueToothSerial.print("\r\n+STWMOD=0\r\n"); //set the bluetooth work in slave mode

 blueToothSerial.print("\r\n+STNA=SeeedBTSlave\r\n"); //set the bluetooth name as "SeeedBTSlave"

 blueToothSerial.print("\r\n+STOAUT=1\r\n"); // Permit Paired device to connect me

 blueToothSerial.print("\r\n+STAUTO=0\r\n"); // Auto-connection should be forbidden here

 delay(); // This delay is required.

 blueToothSerial.print("\r\n+INQ=1\r\n"); //make the slave bluetooth inquirable

 Serial.println("The slave bluetooth is inquirable!");

 delay(); // This delay is required.

 blueToothSerial.flush();

}

//The following code snippets are used update the colour of the RGB LED-----copy and paste------------

void ClkProduce(void){

 digitalWrite(Clkpin, LOW);

 delayMicroseconds();

 digitalWrite(Clkpin, HIGH);

 delayMicroseconds();

}

void Send32Zero(void){

 unsigned char i;

 for (i=; i<; i++){

 digitalWrite(Datapin, LOW);

 ClkProduce();

 }

}

uint8 TakeAntiCode(uint8 dat){

 uint8 tmp = ;

 if ((dat & 0x80) == ){

 tmp |= 0x02;

 }

 if ((dat & 0x40) == ){

 tmp |= 0x01;

 }

 return tmp;

}

// gray data

void DatSend(uint32 dx){

 uint8 i;

 for (i=; i<; i++){

 if ((dx & 0x80000000) != ){

 digitalWrite(Datapin, HIGH);

 } else {

 digitalWrite(Datapin, LOW);

 }

 dx <<= ;

 ClkProduce();

 }

}

// data processing

void DataDealWithAndSend(uint8 r, uint8 g, uint8 b){

 uint32 dx = ;

 dx |= (uint32)0x03 << ; // highest two bits 1，flag bits

 dx |= (uint32)TakeAntiCode(b) << ;

 dx |= (uint32)TakeAntiCode(g) << ;

 dx |= (uint32)TakeAntiCode(r) << ;

 dx |= (uint32)b << ;

 dx |= (uint32)g << ;

 dx |= r;

 DatSend(dx);

}