NINA-B4 series - System integration manual
UBX-19052230 - R06 u-connectXpress software Page 37 of 45
C1-Public
4. When a “
C” character is received from the module, the XMODEM download is ready to begin from
the host.
CCCCC
5. After a successful download of the SoftDevice image, the application image must be flashed.
> x 0 0x26634 NINA-B4-SOFTDEVICE rw 1
CCCCCCCCC
OK
>
6. The application is flashed like the SoftDevice. Use image address and image size for the
application image, which can be found in the
NINA-B41X-CF-x.x.json under the label – u-connect.
The image id of the application is 0. The application’s signature is available in the NINA-B41X-SI-
x.x.x-xxx.txt file. Set permission to read/write/execute, rwx.
> s 0
aCSLNDWWNHVb1hkJGvg+ZNd585WVKM+FaHaocxs2cOeDH4fjfiMrH51mearz3M8lvkx6A0VUv7rxgcOEdQ3qprW
kaZUBvmO5yM8HbUStaZ8QBT/KbkuJSzfT3AQgN7q/HwhZA5haVH4GufkACisGzoTHKhpkzNSR1O8ezf0dltuNeI
C4Q/MRGQcAuEHSHpj+qNHxoV/o3YcTMC1EbcO3G/OzGr0eiC3txAtFIjfwjpWqr1Fq+vnWTHVMYYAqj6WqosPO5
G3g9XYFl5RWjSgxjV7noaMmt8qtb8wBlphBv/D5zk5EzqRigzDy02KY9bs5whSP+Es6Crk6/Hnq1xA3dQ==
OK
> x 0x27000 0x35FA4 NINA-B4-APPLICATION rwx 0
7. Store the application image (image id 0) as the startup image with the “
f <imageid>” command.
> f 0
OK
> x 0x27000 0x35FA4 NINA-B4-APPLICATION rwx 0
8. Reset the module to start up the module with the newly flashed software.
> q
+STARTUP
4.2 Low frequency clock source
NINA-B4x modules are delivered without an external low frequency crystal oscillator (LFXO). The low
frequency oscillator is used for power save and by the radio block. The u-connectXpress software has
an auto sense functionality to detect whether a low frequency crystal oscillator is mounted on the
board. For further information see the respective datasheet [2][3].
The EVK NINA-B41x is delivered with an external low frequency crystal oscillator mounted.
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