I face another problem with WISMO228 TCP/IP Stack.
After succesfully connected to GPRS:
(AT+WIPBR=1,6; AT+WIPBR=4,6,0 succeeded)
I transmit some data:
(AT+WIPCREATE=2,1,“host”,port; AT+WIPDATA=2,1,2; [DATA transmitting]; [+++] now in AT mode).
Then i do nothing and only checking the GPRS bearer for every 10 seconds:
Normally, WSM228 return:
But after 30 minutes, it only return OK (means that the Bearer is closed, in fact i recheck the GPRS Bearer and it is closed).
I don’t received any reponse from WSM228 within this 30 minutes.
So my question is: which causes the GPRS Bearer close? The Operator or timeout of WSM228?
Is there anyway to set the ‘30 minutes’ to 24h or forever until the Radio signal error?