DTMF

dtmf_setup.ino

#include <SoftwareSerial.h>
char c=0;
char str[40];
char cnt=0;
int busy = 2;
int LED1 = 3;
int LED2 = 4;
int LED3 = 5;
int LED4 = 6;
String password="1234";
char no_carroer=0;
String gen_dtmf[4] ={"AT+QWDTMF=7,0,\"", ",50,50\""};
void setup() 
{
  pinMode(busy, INPUT);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  digitalWrite(LED1,HIGH);
  digitalWrite(LED2,HIGH);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,HIGH);
  Serial.begin(9600);//PC
  Serial.flush();
  delay(500);
  Serial.println("DTMF Demo");
  Serial2.begin(9600);//GSM M10
  Serial1.begin(9600);//MP3 Module
  Serial2.flush();
  delay(1000);
  Serial2.println("AT");
  delay(1000);
  Serial2.println("ATE0");//Close Echo M10
  delay(1000);
  Serial2.println("AT+QTONEDET=1");//Open Detect DTMF M10
  Serial1.write(215);//Set volume MP3
  Serial.println("Ready");
}