EVK-R6 - User guide

UBX-21035387 - R02

Starting up

Page 11 of 23

C1-Public

9.

For communication via the cellular module’s UART interfaces, the following connections are

allowed and can be alternatively enabled in a mutually exclusive way (see Table 7 for the switch

position and LED status, and see Figure 1 and Figure 3 for the location of the related connectors,

slide switches and the 3-way UARTs’ routing switch J248):

a. Connect a USB cable to the mini-USB connector (Cellular USB Main UART, J501 on EVB).

The LED DL501 lights blue. When a USB cable is connected to this mini-USB connector, two

COM ports are enabled in Windows. The main 8-wire UART interface of the cellular module is

available over the first COM port opened by the driver after the end of the module boot, once

the switch-on of the cellular module is triggered (see point 11).

b. Connect an RS232 cable to the DB9 connector (Cellular RS232 Main UART, J500 on EVB):

the main 8-wire UART interface of the cellular module is available over RS232 after the end

of the module boot, once the switch-on of the cellular module is triggered (see point 11).

c. Connect a USB cable to the mini-USB connector (Cellular USB two UARTs, J201 on ADP-R6).

The LED DS201 lights blue. The two 4-wire UART interfaces of the cellular module are

respectively available over the two numbered COM ports opened by the driver after the end

of the module boot, once the switch-on of the module is triggered (see point 11). (To enable

two UART interfaces, see the AT commands manual [1], the +USIO AT command.)

Type of connections

SW401

SW403

J248

LED

Access to the main UART interface over the Cellular USB

(Main UART) mini-USB connector on EVB-WL3 (J501)

ON BOARD

MINIUSB

Jumper socket

on pins 1-2

DL403

DL501

Access to the main UART interface over the Cellular RS232

(Main UART) DB9 connector on EVB-WL3 (J500)

ON BOARD

DB9

Jumper socket

on pins 1-2

DL405

Access to the two UART interfaces over the Cellular USB

(Two UARTs) mini-USB connector on ADP-R6 (J201)

B2B

Do not care

Jumper socket

on pins 2-3

DL404

DS201

Access to UART(s) interface(s) over the DIL B2B header on

the top of the adapter board (J104)

B2B

Do not care

No jumper socket DL404

Table 7: UART serial interfaces configuration

Run an AT terminal application (e.g., the u-blox m-center tool) selecting an AT port, with these

settings:

▪

Data rate: 115,200 bit/s

▪

Data bits: 8

▪

Parity: N

▪

Stop bits: 1

▪

Flow control: HW

See appendix A for how to configure the u-blox m-center AT terminal for Windows.

10. If the audio functionality is required, connect the headset provided with the evaluation kit box to

the Headset jack connector (J303 on EVB).

11. Press the Cellular power-on button (SW302 on the EVB) to switch on the cellular module

mounted on the APD-R6.