Ublox ANNA-B4 Series, System Integration Manual, Page: 40 / 74

ANNA-B4 series - System integration manual
UBX-21000517 - R03 Contents Page 40 of 74
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In contrast to the s-center configuration, UART hardware flow is not used for updating software
using AT commands. The file download uses standard XMODEM-CRC16 protocol and 128 bytes
packets.
Prerequisites
As a prerequisite to updating software using AT commands, you must open the JSON file included in
the download container and make note of the defined values to be parsed with the update command.
You also need to copy the signatures given in the related txt files, as shown in
Figure 21 . This
information is needed during the install. The defined values to include in the command, together with
the signature file (
ANNA-B41X-SI-x.x.x-xxx.txt
), are shown in Figure 20 .
[
{
"Label": "ConnectivitySoftware",
"Description": "ANNA-B41X u-blox connectivity software",
"File": "ANNA-B41X-SW-1.0.0-003.bin",
"Version": "ANNA-B41X-SW-1.0.0-003",
"Address": "0x27000",
"Size": "0x37AC0",
"Id": "0x0",
"Permissions": "rwx",
"SignatureFile": "ANNA-B41X-SI-1.0.0-003.txt"
},
{
"Label": "SoftDevice",
"Description": "S140 softdevice from Nordic for ANNA-NRF",
"File": "ANNA-S140-SD-7.2.0.bin",
"Version": "ANNA-S140-SD-7.2.0",
"Address": "0x0",
"Size": "0x26634",
"Id": "0x1",
"Permissions": "rw",
"SignatureFile": "ANNA-S140-SI-7.2.0.txt"
}
]
Figure 20: Defined values for ConnectivitySoftware and SoftDevice as shown in the JSON file
VuxKhg6iB9eApM6g/PLVc4QwpxUDR9D8Ea8zVss2Jn6Y6vz2hQB8mfGwmxRZS9EoAZdkwO7ClKCoMcKC/baB/HnA
DDQo5oS/Z9TdAvJCirAe6AUW9M8jAQsc7w7mpANDqBJZs6uhSBItWZlMxBq7JsvBK6EMgEyu
Zv4DjBeP5KUoLSwi4jvBdwSKoAZXzE1CgTDFPIybwjNz1k2yuBg2VjmyHUVblcGGa1zoJR5CaB6xb6vP
QOntKmuVtycQxKFtC+W4btjxNghjYmiWgy5qBPEBizX/oUqhfjAHm4rfz7JK6Q==
Figure 21: Typical ConnectivitySoftware and SoftDevice signature file
Command syntax
You use the software update command
AT+UFWUPD
with following syntax to update both the
u-connectXpress and SoftDevice software.
AT+UFWUPD=<mode>,<baud_rate>[,<id>,<size>,<signature>,<name>,<flags>]
The defined values for each parameter are shown in Table 17 .
Parameter Type Description
<mode>
Enumerator Download mode:
0: Update mode for the ConnectivitySoftware through the serial port
1: Bootloader mode for update of the SoftDevice through the serial port.
<baud rate>
Enumerator Baud rate in bits per second: 115200 (default), 230400, 460800, or 921600
<id>
Integer ID number of the software image.