The silabs-flasher utility allows to flash products using the Silicon Labs
Wireless Gecko Series 1 and 2 chips. It makes use of the zigpy bellows library
to communicate using the EmberZNet Serial Protocol over serial port.
Note: There is also a more capable utilty called Universal Silicon Labs Flasher.
Silicon Labs Flasher is available from PyPI:
$ pip install silabs-flasher
To use GPIOs to reset the chip (useful on Home Assistant Yellow) make sure to install with gpiod from PyPI as extra dependency:
$ pip install "silabs-flasher[gpio]"
Use the info command to check communication with the device and get information about the current firmware and the bootloader:
$ silabs-flasher --device /dev/ttyUSB4 info
Manufacturer:
Board name:
EmberZNet version: 6.7.9.0 build 405
bootloader version: 0x1902, nodePlat: 0x04, nodeMicro: 0x18, nodePhy: 0x0f
The firmware can be flashed using the flash command:
$ silabs-flasher --device /dev/ttyUSB4 flash --firmware ncp-uart-sw_679_115200.gbl
Trying to connect using EZSP...
Launching bootloader in mode recovery mode via EZSP.
Bootloader detected successfully.
Bootloader version: 1.9.2
Starting firmware upload...
Firmware update [####################################] 100%
Bootloader reported successful upload.
To reset the chip using GPIO use the following arguments:
$ silabs-flasher --device /dev/ttyAMA1 --baudrate 115200 flash \
--no-ezsp-reset --cm4-gpio-reset \
--firmware NabuCasa_EZSP_v6.10.3.0_PA32_ncp-uart-hw_115200.gbl