recyclerobot

while( (sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || 
        sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0 );

recyclerobot

sendATcommand("AT+CGSOCKCONT=1,\"IP\",\"web.be\"","OK",1000);
sendATcommand("AT+CSOCKAUTH=1,1,,\"web\",\"web\"","OK",1000);

recyclerobot

int8_t sendATcommand(char* ATcommand, char* expected_answer, unsigned int timeout){
    uint8_t x=0,  answer=0;
    char response[100];
    unsigned long previous;
 
    memset(response, '\0', 100); // Clean response buffer
    
    delay(100); // Delay to be sure no passed commands interfere
    
    while( Serial.available() > 0) Serial.read();    // Wait for clean input buffer

recyclerobot

sendATcommand("AT", "OK", 2000);

recyclerobot

while(answer == 0){     // Send AT every two seconds and wait for the answer
    answer = sendATcommand("AT", "OK", 2000);    
}

recyclerobot

sendATcommand("AT+CPIN=1234", "OK", 2000);

recyclerobot

answer = sendATcommand("AT+CGPS=1,2","OK",1000);

recyclerobot

sendATcommand("AT+CGPSINFO","+CGPSINFO:",1000);

recyclerobot

sendATcommand("AT+CHTTPACT=\"yourserver.com\",80", "+CHTTPACT: REQUEST", 60000);

recyclerobot

Serial.println("GET /a_random_subdirectory_or_file/index.php HTTP/1.1\r\nHost: www.yourserver.com\r\n\r\n");