Ublox XPLR-AOA-1, User Manual

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XPLR-AOA-1 and XPLR-AOA-2 explorer kits - User guide
UBX-21004616 - R10 XPLR-AOA anchor nodes and tags Page 18 of 27
C1 - Public
No. Name I/O Description Remarks
GPIO_2 LIS_INT I Interrupt signal from Ambient Light
Sensor
☞
Can cause current leak in default
configuration. See C209 GitHub repository
[
13] for more information.
GPIO_7 GREEN O GREEN system status signal Active low
GPIO_8 BLUE O BLUE system status signal Active low
GPIO_18 SWITCH_2 I Switch_2 button Active low
GPIO_20 UART_RTS O UART request to send control signal Used only when hardware flow control is enabled
GPIO_21 UART_CTS I UART clear to send control signal Used only when hardware flow control is enabled
GPIO_22 UART_TXD O UART data output
GPIO_23 UART_RXD I UART data input
GPIO_42 LIS_INT I Interrupt signal from accelerometer
Table 3: Important pin definitions on the C209
For more information about programming the module, see also the NINA-B4 system integration
manual
[6] and NINA-B40 data sheet [14] . See also C209 schematics .
☞
Although the sensors on the C209 application board are not used in the latest direction-finding
tag software from u-blox, the sensors can be utilized in any customer application.
4.4.2 Software and flashing
C209 tags are delivered with bootloader software only and do not include the tag software (available
from Github
[13] ) needed for the device to advertise Bluetooth beacons to C211 anchor nodes.
The bootloader on C209 tags is different than that supplied on C211anchor nodes, and the nrfutil [11]
flashing tool is needed to install software via UART and the boot loader.
u-blox C209 tag software can be installed using the DFU bootloader or an external debugger.
Precompiled packages for each installation option are available from the u-blox C209 software
repository
[13] .
4.4.2.1 Installing tag software with the DFU bootloader over the command line
Install C209 tag software with the pre-flashed DFU bootloader on NINA-B406:
1. Download and install the nrfutil flashing tool from the Nordic Github repository [12] .
2. Download and unpack the
c209_aoa_tag_for_dfu_boot.zip
file from the u-blox C209 software
repository using this direct link, or go to the “Releases” section via the main GitHub repository
page [13] . The unpacked file includes the
app.zip
file used for the installation.
3. Press and hold the SW2 button on the C209 while resetting the board (by inserting the USB cable
or clicking the RESET button) to set the bootloader in
“ down load” mode . See also Figure 15 .
4. Use the following command to install the C209 tag software using nfutil:
nrfutil dfu serial -pkg app.zip -p COMXX -b 115200 -fc 1
☞
Replace
COMXX
with the appropriate COM port for your system.
4.4.2.2 Installing tag software with the DFU bootloader using s-center
The C209 tags can also be flashed over the UART using s-center [7] .
☞
This requires s-center 6.1 or later.
Follow the flashing procedure outlined below when using s-center:
1.
Download and unzip the u-connectLocate software container, as described in Installing tag
software with the DFU bootloader over the command line .