I use Seeduino MEGA & shield GSM/GPRS v1.2. They work fine !
I want my Mega to get new SMS notification without using AT command (+CMGR…) , because response time is to big.
I noticed that :
- The GSM/GPRS shield has many output pins : DTR, DCD, DSR …
- The AT command CNMI enable to select the procedure for how the receiving of new messages from the network is indicated to the TE…
So , is it possible to connect one of the ouptup pins of my shield to one input pin of my Mega in order to detect new SMS notification ?
If yes, what is the output pin to use on the shield ? What are the parameters for the AT CNMI command ?
(I read the AT commande reference guide but I did not understand how to do the job …)
Many thanks !