I am using SIM9000A GSM Modem and have it connected it to my PC.
The issue is that whenever SMS is received by my SIM I receive below data in PC:
+CMTI: "SM",8
I want that all incoming SMS should be directly be read in PC and need not send any further command. Something like when SMS comes - GSM modem should actually send SMS content to serial port.
Below is the output received for CPMS enq.
AT+CPMS=?
+CPMS: ("SM"),("SM"),("SM")
You can use the AT+CNMI command to tell the GSM modem to direct incoming messages directly to the serial port. The full command, with parameters, is: AT+CNMI=2,2,0,0,0
AT+CNMI=2,1,0,0,0 sets the modem back to indication only mode and AT+CNMI=2,0,0,0,0 does not send any indication when a new message is received.