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GPRS module HTTP GET/POST

Former Member

Hello Everyone,

I've been working on a LoNet mini GSM module (SIM800L), interfacing it with Arduino.

I've inserted the SIM mobile card with Internet connection available.

Through serial monitor I'm communicating with it with no problems, but when it comes to make a GET or a POST request to a webserver page it returns Network Error (601).

Here it is:

 

AT+SAPBR=3,1,"CONTYPE","GPRS"

OK

 

AT+HTTPINIT

OK

 

AT+HTTPPARA="CID",1

OK

 

AT+HTTPPARA="URL","http://<Public_Ip_Address>:8080/folder/savedata.php"

OK

 

AT+HTTPACTION=0

OK

+HTTPACTION: 0,601,0      //601: Network Error

 

AT+HTTPREAD=1,100000

OK

 

And no response of the "echo" of the php page...

Do you have any suggestion?

Thanks in advance.

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  • Hello, no you are not getting anything wrong as far as I can tell. Assuming you have credit on SIM card, are using the right settings and that you have reasonable cellular signal strength etc, then what is happening is that you are waiting for the tre.it AP to assign you an IP address. As noted in my original post, this does not always happen straight away. You could wait awhile (minutes) on some occasions and other times you can get one straight away. You just keep checking every few seconds using AT+SAPBR=2,1

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  • Hello, no you are not getting anything wrong as far as I can tell. Assuming you have credit on SIM card, are using the right settings and that you have reasonable cellular signal strength etc, then what is happening is that you are waiting for the tre.it AP to assign you an IP address. As noted in my original post, this does not always happen straight away. You could wait awhile (minutes) on some occasions and other times you can get one straight away. You just keep checking every few seconds using AT+SAPBR=2,1

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  • in reply to BigG

    HI BigG

     

    hello i am  also working in sim 800 and whenever i try to update to the http server i am facing these kind of errors mainly

     

    +HTTPACTION: 0,603,0 (Dns error)

    +HTTPACTION: 0,601,0 (network error)

    +HTTPACTION: 0,604,0 (stack Busy)

     

    i am not getting any idea how to solve it  tried whatever u were telling to  Alessandro Argentieri but i was not able to solve it is there any way to get to know what the problem is by using any other  at commands .

     

    1)how to overcome the stack busy error ?

    2)  i got network error (+HTTPACTION: 0,601,0 ) but when i call it picks my call? at that moment.

     

    please help me to sought the error

     

    Thanks in advance