User's Guide

GETTING STARTED
FLASH STM32CUBE TO DISCOVERY BOARD
GM01Q-STMOD TEST KIT USER MANUAL PROPRIETARY 6
SEQUANS Communications
2.2 Flash STM32CUBE to Discovery Board
Please refer to
https://www.st.com/en/embedded-software/x-cube-cellular.html for
instructions to download the STM32 software and the related documentation.
2.3 Connect to the Network
Note: This section applies when you have access to a LTE network or
simulator.
2.3.1 Initial Operations
1. Connect the RF cable or the Antenna in the RF port of the Kit
2. Insert your SIM card in the SIM slot as shown on Figure 1-2 on page 2.
3. The default STMCUBE binary will automatically configure and connect the
modem to the Terminal.
a) It first sends: AT+CEREG=2.
This command will allow getting notification every time there is a
change of the network registration status
b) It sends then: AT+CFUN=1
The response will be OK , followed by +CEREG=<stat>.
Table 2-1: +CEREG=<stat> Response Details
<stat> Value Meaning Comment
0 Modem is not registered and is not currently
searching an operator to register to
Possible cause : SIM card error or registration
ongoing
1 Modem is registered on network Kit connected
2 Modem is not registered, but is currently
trying to attach or is searching for an operator
to register to.
Possible causes:- No network available-
Available networks have bad coverage -
PLMN available but the registration is rejected
Rev4 Draft