test_bluetooth

#include <SoftwareSerial.h>
#define rxPin A0
#define txPin A1

SoftwareSerial bluetooth =  SoftwareSerial(rxPin, txPin);

char state[4];

void setup()  {
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  bluetooth.begin(115200);

  Serial.begin(9600);

}

void loop() {
if(bluetooth.available() > 0)
  {
    for(int i=0;i<4;i++)
    {
    state[i] = bluetooth.read();
    delay(2);
   }

    for(int i=0;i<4;i++)
    {Serial.print(state[i]);}
    Serial.println();
  }



}