Bluetooth push button

Projects Programming
1

Hey everyone, Im trying to get fimilar with bluetooth on the arduino and im having a small problem with my coding as im not very strong in the field, the main problem im having is getting a push button to relay a message back to my phone when pressed. Id appreciate it if anyone could help me with this.

#include <SoftwareSerial.h>
#include <LiquidCrystal.h> //Include the library that enables you to use the LCD

LiquidCrystal lcd(2,3,4,5,6,7);//Declare that your LCD is connected to pins 2,3,4,5,6 & 7 on your Arduino 
SoftwareSerial BTserial(1, 0); 
int switchState = 0;


void setup()  
{ 
  lcd.begin(16,2);    
  Serial.begin(9600);     
  Serial.println("Enter AT commands:"); 
  pinMode(8,INPUT);      
// HC-06 default serial speed is 9600     
BTserial.begin(9600);   
}   
void loop() 
{       
  // Keep reading from HC-06 and send to Arduino Serial Monitor     
  if (BTserial.available())     
  {           
    Serial.write(BTserial.read());
    
  
  }       
  // Keep reading from Arduino Serial Monitor and send to HC-06     
  if (Serial.available())     
  { 
                            

  
    BTserial.write(Serial.read());
    lcd.write(Serial.read());
    
     
   }
   switchState = digitalRead(8);
   if (switchState == HIGH)
   {
    BTserial.write("hello");
    }
   }
2 
SoftwareSerial BTserial(1, 0);

Do not use software serial on the hardware serial pins. Move the BTserial to different pins.

3

Hey thanks for the quick response, i switched them over to (10, 12) and the button is working now but for some reason my lcd has stopped working any idea why?

4

but for some reason my lcd has stopped working any idea why?

The only place I see output to the lcd display is here.

if (Serial.available())
{
  BTserial.write(Serial.read());
  lcd.write(Serial.read());
}

What are you entering in the Serial monitor, and what are you expecting to see?

5

Sorry I havent explained things very well. What im trying to do is send a message from my phone to the lcd display on the arduino board.

6

What im trying to do is send a message from my phone to the lcd display on the arduino board.

In that case, printing to the lcd should be the message received over the software serial connection between the arduino and the bluetooth module which is receiving the message from the phone. In this block

if (BTserial.available())     
  {           
    
  }

Bluetooth is often said to be "serial without wires" , so you would do well to read Robin2's serial communication tutorial for way in which to reliably send and receive messages.

Serial Input Basics