u-blox NINA-B4 Series - Page 36

NINA-B4 series - System integration manual
UBX-19052230 - R06 u-connectXpress software Page 36 of 45
C1-Public
To set the module in FW download mode use the AT+UFWUPD AT command as shown below:
AT+UFWUPD=0,115200,0,221092,
aCSLNDWWNHVb1hkJGvg+ZNd585WVKM+FaHaocxs2cOeDH4fjfiMrH51mearz3M8lvkx6A0VUv7rxgcOEdQ3qprWkaZ
UBvmO5yM8HbUStaZ8QBT/KbkuJSzfT3AQgN7q/HwhZA5haVH4GufkACisGzoTHKhpkzNSR1O8ezf0dltuNeIC4Q/MR
GQcAuEHSHpj+qNHxoV/o3YcTMC1EbcO3G/OzGr0eiC3txAtFIjfwjpWqr1Fq+vnWTHVMYYAqj6WqosPO5G3g9XYFl5
RWjSgxjV7noaMmt8qtb8wBlphBv/D5zk5EzqRigzDy02KY9bs5whSP+Es6Crk6/Hnq1xA3dQ==,NINA-B4-
APPLICATION,rwx
2. When a ‘C’ character is received from the module, XMODEM download is ready to begin from the
host.
CCCCC
3. Send the application bin file using XMODEM protocol.
4. After a successful file transfer, the module will automatically start the application.
+STARTUP
4.1.2.1.1 Example commands executed when flashing both the SoftDevice and
application
In this section we describe a flashing scenario where both the application file and the SoftDevice are
updated.
1. Start the boot loader mode using either:
 The AT command -
AT+UFWUPD=1,115200
 Press the SW1 and SW2 buttons during a module reset
2. The “
s <imageid> <signature>” command stores the SoftDevice signature. The image id of the
SoftDevice is 1. The signature is available in the
NINA-S140-SI-x.x.x.txt file.
> s 1
e4CHiTQB+LUzv7gYL5fDJ8H1VH7B1JWZjK2W3mMWWVYdY4W64or4+0IxKATg6LrbD1M8qQ+Io9++nTPxB++FDzI
h+3hpP8GZe5h2SvE/JGLJScnu0PCygvH+5+7+qKB11Fz2kERy0Ly2A+ZCwigPfoYHjbslnfKLzvuVvwJekly/DW
YQHVgEHmTRczvyc5psK73wHpUPKo+UPYKKSgTM87ZFWIBHFa4vQMlWsMl75Uq4nH3T7J+mgpaKGtCCbQy6LsAtQ
oXENTda7efD3Irs2pb69mg9M+0pWEq48Tjaym1HiAgUoGc7AnuMPl78qRUGLA6Z/m2f7En0B9ldC67VZw==
3. The “x <imageaddress> <imagesize> <imagename> <permissions> <imageid>” command triggers
the boot loader to accept a file transfer using XMODEM protocol. The image address and image
size can be found in the NINA-B41X-CF-X.Y.json file. Set permission to read/write, rw.
{
"Label": "SoftDevice",
"Description": "S140 softdevice from Nordic for NINA-NRF",
"File": "NINA-S140-SD-7.2.0.bin",
"Version": "NINA-S140-SD-7.2.0",
"Address": "0x0",
"Size": "0x26634",
"Id": "0x1",
"Permissions": "rw",
"SignatureFile": "NINA-S140-SI-7.2.0.txt"
}
Use the ‘x’ boot loader command to download the SoftDevice file:
> x 0 0x26634 NINA-B4-SOFTDEVICE rw 1