char inputbuffer[64]={0};

void setup()
{
	Serial.begin(115200);
	Serial1.begin(115200);
  pinMode(A0, INPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(8,OUTPUT);
  digitalWrite(5, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(8, HIGH);
  delay(3000);
  digitalWrite(8, LOW);
  Serial.println("A7 Power ON!");
}

void loop()
{

  Serial1.println("AT\r"); delay(200);
  Serial1.println("AT\r"); delay(200);
  Serial1.println("AT\r"); delay(200);
  Serial1.println("AT\r"); delay(200);
  Serial1.println("AT\r"); delay(200);
  uint8_t i = 0, j=0;
  String resp = "";

  while(1)
  {
    delay(1000);
    switch( i )
    {
      case 0: while( i == 0 ) {
                Serial1.print("AT+CPIN=\"0207\"\r\n");
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("READY") > -1 ) i=1;
              }
              break;

      case 1: while( i == 1 ) {
                Serial1.print("AT+CGDCONT=1,\"IP\",\"internet.telekom\"\r\n" );
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("OK") > -1 ) i=2;
              }
              break;

      case 2: while( i == 2 ) {
                Serial1.print("AT+CGATT=1\r\n" );
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("OK") > -1 ) i=3;
              }
              break;

      case 3: while( i == 3 ) {
                Serial1.print("AT+CGACT=1,1\r\n" );
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("OK") > -1 ) i=4;
              }
              break;
      case 4: while( i == 4 ) {
                Serial1.print( "AT+CIPSTART=\"UDP\",\"188.166.124.211\",41234\r\n" );
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("OK") > -1 ) i=5;
              }
              break;
       case 5: while( i == 5 ) {
                Serial1.print( "AT+GPS=1\r\n" );
                while( !Serial1.available() );
                delay(200);
                resp = Serial1.readString();
                Serial.print(resp);
                if( resp.indexOf("OK") > -1 ) i=6;
              }
              break;
    }

    while( i == 6 )
    {
   //   if(digitalRead( A0, LOW ) )
   //   {

     // }
    }



  }


}