User's Guide

SETUP AND TROUBLESHOOTING
SIM INTERFACE MULTIPLEXING
GM01Q-STMOD TEST KIT USER MANUAL PROPRIETARY 16
SEQUANS Communications
When the GM01Q-STMOD Test Kit is used in standalone, the SIM multiplexer
is in No SIM Hi-Z state by default. The user has to connect SIM_SEL0 and 1
to the ground to be able to use the local SIM.
When the GM01Q-STMOD Test Kit is connected to a ST Discovery board, the
SIM multiplexer is managed directly by the MCU. The configuration can be
checked as follows. The corresponding logs are shown on Figure 3-8.
1. Connect a USB cable to the ST Discovery board (select the USB connector
labelled ST-LINK)
2. Open a serial terminal on the STMicroelectronics STLink Virtual COM Port
at 115200 bauds.
3. At start up, press 1 to select the application "1: Setup configuration
Menu"
4. Then press 2 to configure the cellular service: "2: Configuration:
Cellular Service"
5. In the Cellular Service configuration Menu, press l to check the current
configuration "l : list current configuration"
6. Check the first line: Sim Slot 0: 0 (MODEM SOCKET)
7. If the selected SIM slot is not 0, press c to update the configuration "c :
update configuration by console and store it in FEEPROM"
a) Press 4 when prompted for the Version
b) Then press 0 when prompted for the SIM Slot
c) For the other values, copy the figure in parenthesis
Rev4 Draft