DTMF

dtmf_wait_Ring.ino

void wait_Ring(void)
{
 char RingConunt=0;
 char RingTime=3;
 no_carroer=0;
   while(1)
   {
          String data = rx_m10();
          if(data == "RING")
          {
            Serial.println("Ring");
            RingConunt++;
            if(RingConunt==RingTime)
            {
              Serial.println("operate");
              RingTime=0;
              Serial2.println("ATA");
              delay(500);
              Serial1.write(0x01);
              delay(10);
              while(!digitalRead(busy)){}
              return;
            }
          }
          if(data == "NO CARRIER")
          {
           RingConunt=0;
          }
    }
 }