openlifu.io.LIFUDFU

LIFU Transmitter Firmware Update (DFU) support.

Provides:

• stm32_crc32() — STM32-compatible CRC32

• parse_signed_package() — parse/validate a signed firmware package

• STM32USBDFU — USB DFU client (PyUSB, for module 0)

• STM32I2CDFUviaMaster— I2C DFU via OW UART master passthrough (modules 1+)

• LIFUDFUManager — high-level firmware update orchestration

Functions

parse_signed_package(pkg)	Parse and integrity-check a signed firmware package.
stm32_crc32(data[, init])	Compute CRC32 compatible with the STM32 CRC peripheral (poly=0x04C11DB7).

Classes

LIFUDFUManager(uart)	Orchestrates firmware updates for a single LIFU transmitter module.
STM32I2CDFUviaMaster(uart[, i2c_addr, ...])	I2C DFU client that routes all I2C transactions through the USB-master module via the OW_I2C_PASSTHRU UART packet type.
STM32USBDFU([vid, pid, transfer_size, ...])	Minimal STM32 DfuSe USB client using PyUSB.
TestSignedPackage([methodName])	Unit tests for stm32_crc32() and parse_signed_package().