B4R Question CheckRegistration Sub is Wrong??

[Cableguy]

Hi guys

I am having a bit trouble getting info from my GSM/GPRS A6 Board.
I finally managed initial communication, but getting the network status is being troublesome.
When I initialize my board, I get the expected "AT+CNMI=2,1"
But, seems like the board doesn't come out from the busy state, so I commented the line "If Busy = true...." in the SendCommand sub, and it performs the action as expected, and gives me as result

AT+CREG?
+CREG: 1?1

OK

but the CheckRegistration sub logs "Not registred"

I wonder if this line is correct?

If bc.IndexOf(buffer, "+CREG: 0,1") > -1 Or bc.IndexOf(buffer, "+CREG: 0,5") > -1 Then

Form the documentation in this page, my response shows the board to be registered to home network

 

[Erel]

You need to modify this line. I don't remember the exact details but this check expects the status messages of a different chip.

 

[Cableguy]

Thanks Erel...
Since its an AT command, shouldn't it be "universal"?

 

[Johan Hormaza]

Since its an AT command, shouldn't it be "universal"?

That depends on the versions.

 

[Cableguy]

That depends on the versions.

Can you elaborate? How do I check versions?

 

[Erel]

Not directly related but it seems that the order of the status codes I received is different than the order documented in that page.

The bottom line is that you should feel free to change the parsing code based on your chip outputs.

 

[tigrot]

AT comand set is "Almost universal".

 

[tigrot]

Are you sure that there are no aswers queued before your AT comand?

 

[Cableguy]

Are you sure that there are no aswers queued before your AT comand?

I don't think so because I am getting "OK" for each command I send.

 

[tigrot]

I've just finished a pjt using Vdrive: nothing in document was right. I had to reinvent everything.