[Ovmsdev] SIM808 not communicating

Michael Balzer dexter at expeedo.de
Fri Jul 22 14:38:00 HKT 2016


Hi Tom,

your diag log looks normal until the module starts 
to send something.

It even succeeds with the TCP connect, but the 
connection closes as soon as it sends:

> AT+CIPSTART="TCP","api.openvehicles.com","6867"
> OK
>
> CONNECT OK
> AT+CIPSENDMP-C 0 QRG/M9iLIp+XEVajAB2v8t 
> JIBS2rw2cub6ssu5QY4C7Q== xxxxxx
>
> DATA ACCEPT:63
>
> CLOSED
>
> Any thoughts? I haven't yet looked 
> communications of my working module to compare. 
> Does anyone have a firmware or tutorial that 
> sends a fixed sms message to test the cellular 
> module?

Are you sure the SIM account has enough SMS & data 
volume? Does the SIM work normally in a mobile phone?

You can use the diag mode to send an SMS manually. 
Note: the 808 does not echo LF, only CR.

Regards
Michael

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