🛠️ WebUSB DFU

🛠️ YU3MA DFU Firmware utility

Select Vendor ID (VID hex): (use 0x0483 for STM32)

Runtime mode

Note: To enter DFU mode, press and hold the BOOT0 button while powering up the device.

About

This is a proof-of-concept demo of host USB DFU drivers in Javascript utilizing the WebUSB draft standard to implement USB firmware updates from the browser.

How to Convert ELF/HEX to BIN

This tool supports only .bin (binary) files for read/write operations.

To convert files:

ELF → BIN: arm-none-eabi-objcopy -O binary firmware.elf firmware.bin
HEX → BIN: arm-none-eabi-objcopy -I ihex -O binary firmware.hex firmware.bin

Prerequisites

In order to run this demo, you will need:

An up-to-date version of Chrome, at least version 61 or newer
A USB DFU class device

For a WebUSB friendly USB DFU bootloader that can be flashed onto inexpensive STM32F103 boards, check out the dapboot project.

Some recent STM32 parts have on-chip USB DfuSe bootloaders that are supported by this site.