Just i joined you, I faced one issue on sim800l module.
whenever i try to set AT+CGATT=1 i always get +CME ERROR: unknown
20:13:23.126 -> AT+CGATT?
20:13:23.126 -> +CGATT: 0
20:13:23.126 -> OK
20:13:31.141 -> AT+CGATT=1
20:13:31.141 -> +CME ERROR: unknown
Please suggest me what should I do.
Thanks & Regards
That command is not needed for TCP connection. Go ahead without it.
Sir actually I was try with this command I can’t get ip.
And without ip how can I know tpc is connected or not…!
Sir can you share me any minimum cmd which I can TCP connection…!
I connect to GPRS with just 3 commands
Next issue socket commands AT+CIPSTART etc