[SIM800/SIM808] GPRS disconnect not complete

[brvdg]

Hi,

if I connect vie GPRS and want to disconnect, the GPRS connection is not complete closed. The module is blinking like connected. The problem is, TinyGSM doesn't detach the GPRS service.

Solution: Please add

sendAT(GF("+CGATT=0"));

to the disconnect code.

Thanks

[vshymanskyy]

Thank you! Will do. BTW, do you know how to check GPRS status reliably on SIM8xx?

[brvdg]

Which status do you exactly mean? The GPRS network status is the same like the network status (AT+CGREG? instead of AT+CREG?).

AT+CGATT? replies the GPRS status. 0 = detached, 1 = attached. That is what the LED indicates on the modules.

[GeorgianBorca]

This is how I check if my modem is connected to internet or not.

`boolean TrackME_GSM::isOnline() { byte conn= 0; if (!sendAT(F("AT+SAPBR=2,1"), F("OK"), 3000)) { //+SAPBR: 1,3,"0.0.0.0" return false; }
if (strstr_P(gsmBuffer, PSTR ("BR:"))) { strtok_P(gsmBuffer, PSTR (" ")); strtok_P(NULL, PSTR (",")); conn = atoi(strtok_P(NULL, PSTR (","))); } if (conn == 2 || conn == 3) { return false; } else if (conn == 0 || conn == 1) { return true; } else { return false; }

return false;

}`

[vshymanskyy]

Please check it on the latest master branch