Firmware Upgrade; Getversion; Eraseflash; Table 2-11: Getversion Command - Semtech LR1121 User Manual

2.3 Firmware Upgrade

The LR1121 can be upgraded with a new firmware image, supplied by Semtech. Complete details are provided in the
Application note AN1200.57 "LR1110: Upgrade of the Program Memory", available from the Semtech website. The related
commands are described hereafter.

2.3.1 GetVersion

Command GetVersion() returns the version of the LR1121.

Table 2-11: GetVersion Command

Byte
Data from Host
Data to Host

Table 2-12: GetVersion Response

Byte
Data from Host
Data to Host
•
HW Version is the version of the LR1121 hardware
•
Use Case specifies the usage of the device:
0x01: LR1110

0x02: LR1120

0x03: LR1121

0xDF: Bootloader mode

•
FW Major + FW Minor is the version of the LR1121 internal firmware stored in flash memory

2.3.2 EraseFlash

In bootloader mode only, the EraseFlash(...) command must be used before a new image is written to the device.
If executed in another mode, the command status in Stat1 is set to P_ERR.

Table 2-13: EraseFlash Command

Byte
Data from Host
Data to Host
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
0
0x01
Stat1
0 1
0x00 0x00
Stat1 HW Version
0
0x80
Stat1
www.semtech.com
1
0x01
Stat2
2 3
0x00 0x00
Use Case FW Major
1
0x00
Stat2
4
0x00
FW Minor
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