/*code sourced from Eidha Al Rashdi, fellow student at Fab Lab UAE.
http://fab.academany.org/2018/labs/fablabuae/students/eidha-alrashdi/week14.html

-----------------

Modified by Darshan Shah,
during Fab Academy 2018.*/

#include <SoftwareSerial.h>      // include software serial library

SoftwareSerial serial(0,1);      // definig rx (receiver) and tx(transmitter) for serial communication


// constants won't change.
int LED = 7;     // defining led pin as an integer
char turnON = '2';  // defining character transmitted from sender to turn on the led 


void setup() {    // the setup function runs once I press reset or power the board
  
  pinMode(LED, OUTPUT); // initialize digital pin LED as an output.
  serial.begin(9600);   // begin serial communication at 9600 bits per second
}


void loop() {   // the loop function runs over and over again forever

if (serial.available()>0){   // receive data when transmitted
  
char state = serial.read();  // to read the character state in serial monitor
  serial.print("hh");        // to print the specific alphabet on serial monitor when button pressed
  if ( state == turnON)      // if state reads the data that has transmitted then,
  {
  digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(2000);               // delay for 2000 milliseconds (2 seconds)
  digitalWrite(LED, LOW);    // turn the LED off 
  delay(400);                // delay for 400 milliseconds (0.4 seconds)
  
  // repeat the loop function 
  
  digitalWrite(LED, HIGH);
  delay(400);
  digitalWrite(LED, LOW);
  delay(400);
  digitalWrite(LED, HIGH);
  delay(400);
  digitalWrite(LED, LOW);
  delay(400);
  digitalWrite(LED, HIGH);
  delay(400);
  digitalWrite(LED, LOW);
  delay(400);
}
  else {
  digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
                        
}
}
}