How to use FM Radio on SIM808 EVB-V3.2.2

Projects Networking, Protocols, and Devices
1

Hello guys, I Just bought the SIM808 GSM/GPRS/GPS shield with an arduino Mega 2560. I have written a simple sketch
shown below which I'm using to execute AT commands on my SIM808 shield.

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup()  
{
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  mySerial.begin(9600);

}

void loop() // run over and over
{
  if (mySerial.available())
    Serial.write(mySerial.read());

  if (Serial.available())
  {
    while(Serial.available())
    {
      mySerial.write(Serial.read());
    }
    mySerial.println();
  }
}

I keep getting ERROR as a result of executing the AT+FMOPEN=1 command which is used to initialize the FM Radio integrated with the module. So far, all other AT commands works great except this one.

question_sc.png
question_sc.png748×342 20.4 KB

sim808 evb3.2.2.png

2

Actually, All other AT commands are responding very well except this one

3

Please supply links to document the radio and the AT command. I don't see it in the document giving all the valid AT commands.

Paul

4

HI @Paul, thanks for your reply. The document containing all the FM Radio AT commands is provided through this link:

The following are a set of AT commands and their results I obtained during a session
AT
OK
AT+CGNSPWR?
+CGNSPWR: 0

OK
AT+CGNSPWR=1
OK
AT+CGNSCONSTST=0
OK
AT+CGNSINF
1,1,20180907073831.000,3.834148,11.472868,135.600,1.31,141.4,1,,5.5,5.6,1.0,,7,3,,,40,,

OK
AT+FMOPEN?
ERROR
AT+FMOPEN=1
ERROR

Waiting patiently for your response, Thanks.

5

Lets check the actual SIM chip. It must be a SIM800, SIM800L or a SIM800H, according to the data sheet. Please confirm.

Paul

6

Yes, the SIM808 does not have an FM radio, only the SIM800 has it.

7

Thanks so much for the info @mauried.