I am using an HL7748 on my mangOH red board. I had been using the WP8548, which worked well. I am trying to send SMS commands to the HL, but it seems it is not connected to the cellular network. Everything worked fine with the WP, so I swapped out for the HL, keeping everything the same. On the WP, when I send an at+cops? command I get a +COPS:0,0,“AT&T Sierra Wireless”,2. With the at+cereg? I get +CEREG:0,4. ON the HL, I get +COPS:0, and +CEREG:0,3. I tried to manually register it with at+cops command using the name of the network I got using the WP chip. Also tried the at+cgatt command (to try to attach it) and tried to follow the steps I found online on how to register and attach a device. When I issue an at+csq, (signal quality), I get a +csq:99,99. Is anyone here using the HL on the mangOH red for cellular data, and if so, how did you get it to register to a network and work? Seems there needs to be some configuration done on my chip and I think it is something simple that is not enabled.
I guess the application processor on the WP is doing some initializing that is not being done on the HL?
Also, is there any documentation out there from Sierra Wireless on how to manually register the chips to a network? Or steps on how to send it AT commands for different configurations??