//Many thanks to Nick Gammon for the basis of this code
//http://www.gammon.com.au/serial
const unsigned int MAX_MESSAGE_LENGTH = 20;
void setup() {
 Serial.begin(9600);
}
void loop() {
 //Check to see if anything is available in the serial receive buffer
 while (Serial.available() > 0)
 {
   //Create a place to hold the incoming message
   static char message[MAX_MESSAGE_LENGTH];
   static unsigned int message_pos = 0;
   //Read the next available byte in the serial receive buffer
   char inByte = Serial.read();
   //Message coming in (check not terminating character) and guard for over message size
   if ( inByte != '\n' && (message_pos < MAX_MESSAGE_LENGTH - 1) )
   {
     //Add the incoming byte to our message
     message[message_pos] = inByte;
     message_pos++;
   }
   //Full message received...
   else
   {
     //Add null character to string
     message[message_pos] = '\0';
     //Print the message (or do other things)
     Serial.println(message);
     int a=0;
     a=(int)message[0]-0x31;
     Serial.println(a);

    if(message[0]== 'g' && message[1]== ' ' && message[6]== ' ' && message[11]== ' '){
      Serial.println("Gain");
      

    }

     //Reset for the next message
     message_pos = 0;
   }
 }
}