Problems with receiving SMS with A6 GSM module

Using Arduino Networking, Protocols, and Devices
1

Hello guys,

I am trying to receive SMS with my Arduino UNO connected with an A6 GSM module (this one). Unfortunetly I am not able to receive the text even though my arduino recognizes the incoming message by printing the phone number and the date of the arrival. After the Initializing-step I sended an SMS to the module. Here is the code I tested lastly:

#include <SoftwareSerial.h>

static const int RXPin = 10, TXPin = 11;
SoftwareSerial mySerial(RXPin, TXPin);// The serial connection to the GPS device

void setup()
{
  //Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
  Serial.begin(9600);
  
  //Begin serial communication with Arduino and A6
  mySerial.begin(9600);

  Serial.println("Initializing..."); 
  delay(1000);

  mySerial.println("AT"); //Once the handshake test is successful, it will back to OK
  updateSerial();
  
  mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
  updateSerial();
  mySerial.println("AT+CNMI=1,2,0,0,0"); // Decides how newly arrived mySerial messages should be handled
  updateSerial();
}

void loop()
{
  updateSerial();
}

void updateSerial()
{
  delay(500);
  while (Serial.available()) 
  {
    mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
  }
  while(mySerial.available()) 
  {
    Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
  }
}

The Serial Monitor output I get (My phone number is replaced by "xxx"):

Initializing...
AT

OK
AT+CMGF=1

OK
AT+CNMI=1,2,0,0,0

OK

+CIEV: "MESSAGE",1

+CMT: "+49xxxxxxxxxxx",,"2018/11/24,12:
^STN: 38

^CINIT: 4, 8192, 38

As you can see I receive the message at 2018/11/24 at 12 o'clock. The minutes and the message is missing so I am not able to do any postprocesssing with the message.

My wiring:
Arduino A6 GSM
GND GND
digital 10 U_TXD
digital 11 U_RXD
I powered the A6 GSM by an 2A 5V power supply via the USB connector

I hope someone has some helpful advices for me.

Thanks in advance

Best regards,
David

2

Hello

i am having same problem. did you find any solutions..

Please update.

Thanks
Rakesh

3

I don't know if the OP had an answer but google turned this up...

See the final answer

4

Thanks

I will check and reply to you..

Appreciate for your reply.

Thanks
Rakesh

5

i have a problem like that:

code:

Serial3.print("AT+CMGF=1\r"); // Configuring TEXT mode
delay(100);
updateSerial();
Serial3.print("AT+CSDH=1\r"); // mostrar la informacion del mensaje
delay(100);
updateSerial();
Serial3.print("AT+CNMI=1,2,0,0,0\r"); // Decides how newly arrived SMS messages should be handled
delay(200);
updateSerial();

but when a receive the message, i just receive the data, i need the information of the remote number.

Serial monitor:

13:45:02.050 -> +CIEV: "MESSAGE",1
13:45:02.050 ->
13:45:02.050 -> +CMT: "Prueba numero 1, llega el mensaje completo, prueba numero 2 llega el mensaje completo