I have a Seeeduino GPRS and would like to establish a TCP connection. I get the following error with Seeeduino GPRS_ConnectTCP example code.
GPRS - TCP Connection Test…
Init success, start to upload data…
connect TCP error
I think this could has to do with the APN my provider, which must be set before the internet connection. I tried to set the APN with AT+CSTT in GPRS::connectTCP in gprs.cpp with no success. On wiki there is no info, can somebody help how to this?