EVK-L2 - User Guide
UBX-14000422 - R10
Starting up
Page 15 of 30
10.
For communication via the TOBY-L2 module’s UART interface, the following connections are allowed and
can be alternatively enabled in a mutually exclusive way (see Table 8 for switch position and LED status):
a.
Connect a USB cable to mini USB connector (
Cellular USB
, J501 on EVB), LED DL501 lights blue
b.
Connect an RS232 cable to DB9 connector (
Cellular RS232
, J500 on EVB)
When a USB cable is connected to the mini USB connector, two COM ports are enabled in Windows (the
numbering of the COM ports can be seen via the Windows Device Manager). The serial port for AT
commands is available over the first numbered COM port opened by the driver.
Type of connections
SW401
SW403
LED
Access to cellular UART over the
Cellular USB (UART)
mini USB connector (J501)
ON BOARD
MINIUSB
DL403
Access to cellular UART over the
Cellular RS232 (UART)
DB9 connector (J500)
ON BOARD
DB9
DL405
Access to cellular UART on DIL Board-to-Board connector on the adapter board:
cellular UART detached from USB (UART) J501 and RS232 (UART) J500 connectors
B2B
Do not care
DL404
Table 8: Serial interface configuration
Run an AT terminal application (e.g. the u-blox m-center tool) selecting the COM port, with these settings:
o
Data rate: 115200 b/s
o
Data bits: 8
o
Parity: N
o
Stop bits: 1
o
Flow control: HW
See Appendix A for how to configure the u-blox m-center AT terminal for Windows.
11.
If the audio functionality is required, connect the headset provided with the evaluation kit box to the
Headset jack
connector (J303 on EVB).
1.9
Enabling error result codes
Command sent by DTE (user)
DCE response (module)
Description
AT+CMEE=2
OK
Enables the cellular module to report verbose error result
codes.
1.10
PIN code insertion (when required)
Command sent by DTE (user)
DCE response (module)
Description
AT+CPIN="8180"
OK
Enter the PIN code, if needed (enter the PIN of the SIM card
– 8180 is written here as an example).
AT+CLCK="SC",0,"8180"
OK
Unlock the PIN at power on (the last parameter is the PIN of
the SIM card – 8180 is written here as an example).
AT+CLCK="SC",1,"8180"
OK
Lock the PIN at power on (the last parameter is the PIN of
the SIM card – 8180 is written here as an example).
