/*
 Voltaat learn (http://learn.voltaat.com)
 Link for full tutorial:
 Tutorial: Control a servo motor from up to 1 kilometer away

 The transmitter circuit code:

 The transmitter circuit wiring:
 Connections from the Arduino to the breadboard:
 • Arduino GND pin  → Breadboard ground line
 • Arduino 5V pin  → Breadboard 5V line

 Connections from the HC-12 module:
 • GND pin→ Breadboard ground line
 • VCC pin→ Breadboard 5V line
 • TXD pin → Arduino pin 7
 • RXD pin → Arduino pin 8

 Connections from the first push button:
 • First pin→ Breadboard 5v line
 • Second pin→ Arduino pin 2
 • Second pin→10KΩ resistor → Breadboard Ground line

 Connections from the second push button:
 • First pin→ Breadboard 5v line
 • Second pin→ Arduino pin 5
 • Second pin→10KΩ resistor → Breadboard Ground line

 The receiver circuit wiring:
 Connections from the Arduino to the breadboard:
 • Arduino pin GND → Breadboard ground line
 • Arduino pin 5V → Breadboard 5V line
 Connections from the HC-12 module:
 • GND pin→ Breadboard ground line
 • VCC pin→ Breadboard 5V line
 • TXD pin → Arduino pin 7
 • RXD pin → Arduino pin 8

 Connections from the servo motor:
 • GND pin→ Breadboard ground line
 • VCC pin→ Breadboard 5V line
 • Signal pin → Arduino pin 9

*/

//Allows serial communication on other digital pins of an Arduino board
#include "SoftwareSerial.h"

//Configure software serial port with digital pins 7,8 (TR,RX)
SoftwareSerial HC12(7, 8);

//Define push button to arduino digital pin 2
int Button1 = 2;

//Define push button to arduino digital pin 5
int Button2 = 5;

//Define variables
int button1State = 0;
int button2State = 0;
boolean doorState = false;
boolean oneTime = true;

//Commands inside void setup run once
void setup()
{
 //Button1 is defined as an input
 pinMode(Button1, INPUT);

 //Button2 is defined as an input
 pinMode(Button2, INPUT);

 //Start the serial monitor at 9600 baud rate (9600 bits per second)
 Serial.begin(9600);

 //Arduino communicates with HC12 module at a baud rate of 9600 (9600 bits per second)
 HC12.begin(9600);

 //delay 200 milliseconds
 delay(200);
}

//Commands inside void setup run forever
void loop()
{
 //If condition to make the push button works one time
 if (digitalRead(Button1))
 {
   //change doorState variable state
   doorState = true;

 }
 //If condition to make the push button works one time
 if (digitalRead(Button2))
 {
   //change doorState variable state
   doorState = false;

 }

 //If condition to make the push button works one time when pressed
 if (doorState && oneTime )
 {
   //print to serial monitor
   Serial.println("Button1 is pressed, Door Is opened");
   //print to serial monitor
   Serial.println('1');
   //send '1' to the HC12 receiver module
   HC12.print('1');
   //change oneTime variable state
   oneTime = false;
 }

 //If condition to make the other push button works one time when pressed
 else if ( !doorState  && !oneTime)
 {
   //print to serial monitor
   Serial.println("Button2 is pressed, Door Is closed");
   //print to serial monitor
   Serial.println('2');
   //send '2' to the HC12 receiver module
   HC12.print('2');
   //change oneTime variable state
   oneTime = true;

 }

 else if ( doorState && !oneTime)
 {
   //print door state to serial monitor
   Serial.println("Door state : Opened, you can press Button2 to close");

 }

 else if ( !doorState && oneTime)
 {
   //print door state to serial monitor
   Serial.println("Door state : Closed, you can press Button1 to open");

 }

}