Communicating with arduino via tcp/ip?

Mongoballe1

Hi

im working on a wifi arduino project, and i want to use processing to communicate with the arduino, but i dont quite understand the term buffer and byte yet, so i was wondering how do i send a buffer/byte to arduino?

Arduino code

int lights =14;
/////Motor Pins/////////
int enableM = 5;
int aM = 3;
int bM = 2;
//////Steering Pins/////
int enableS = 6;
int aS = 7;
int bS = 4;
//////Temperature Sensor Setup//////


//---------------------------------------------------------------------------

void setup()
{
  Serial.begin(9600);

  pinMode(lights, OUTPUT);
  pinMode(enableM, OUTPUT);
  pinMode(aM, OUTPUT);
  pinMode(bM, OUTPUT);  

  pinMode(enableS, OUTPUT);
  pinMode(aS,OUTPUT);
  pinMode(bS,OUTPUT);

  WiFi.init();

}

void loop()
{

       //Serial.println(Temp.Fahrenheit());
    WiFi.run();

    digitalWrite(enableM,HIGH);   
    digitalWrite(enableS,HIGH); 
  //////////////////////Lights/////////////    
    if(buffer[4] == 'O'){   
       digitalWrite(lights, HIGH);    
      }
    if(buffer[4] == 'X'){     
       digitalWrite(lights, LOW); 
    }
  /////////////////////////////////////////
  //////////////Motor Control//////////////
    if(buffer[0] == 'F')
    {
       digitalWrite(aM,HIGH);
       digitalWrite(bM,LOW);
    }
    if(buffer[1] == 'B')
    {
      digitalWrite(aM,LOW);
      digitalWrite(bM,HIGH);
    }
     if((buffer[1] == 'X') && (buffer[0] == 'X'))
    {
       digitalWrite(aM,LOW);
       digitalWrite(bM,LOW);
    }
  ////////////////////////////////////////
  ////////////Steering///////////////////

   if(buffer[2] == 'L')
    {
       digitalWrite(aS,LOW);
      digitalWrite(bS,HIGH);
    } 
    if(buffer[3] == 'R')
    {
      digitalWrite(aS,HIGH);
       digitalWrite(bS,LOW);
    }
     if((buffer[3] == 'X') && (buffer[2] == 'X'))
    {
       digitalWrite(aS,LOW);
       digitalWrite(bS,LOW);
    }
 Serial.print(" buffer 0:");
 Serial.print(buffer[0]);
 Serial.print(" buffer 1:");
 Serial.print(buffer[1]);
 Serial.print(" buffer 2:");
 Serial.print(buffer[2]);
 Serial.print(" buffer 3:");
 Serial.print(buffer[3]);
 Serial.print(" buffer 4:");
 Serial.print(buffer[4]);
 Serial.println(":");
 //delay(1);
}

I know the arduino code works, cause its a "robot diy" i downloaded and tested, the program uses visual studio, but i want to use processing cause its more like arduino.

the arduino code keeps calling buffer[0] to [4] how do i send these to Arduino from processing with the right values?