- Change initialization code to use
AT+GMR
to identify module type rather thanATI
, because for SIM7070ATI
does not include module name - Update LTE_Demo.ino and SIM7XXX_LTE_Demo.ino to reflect SIM7070 changes
- Test SIM7070 support: Connection with Hologram.io SIM card, sending/receiving SMS, network time, read battery level, general functions, HTTP GET requests (tested on T-Mobile LTE CAT-M1 network in the US)
Discovered issues with SIM7070G, most likely related to SIMCom firmware:
- HTTP POST request according to example 1 in the SIM7070 HTTP(S) app note returns HTTP 400 code
- HTTP POST request according to example 2 in the SIM7070 HTTP(S) app note does not accept JSON body and successfully posts, but with no content
- GNSS commands do not run at all (return "ERROR")