STM32 Flasher
Flash firmware to STM32 microcontrollers via WebUSB (DFU mode) or WebSerial. Requires HTTPS (ar3s.me) and Chrome/Edge.
Connection Method
DFU Mode Requirements:
• Put STM32 in DFU mode (BOOT0=HIGH, reset)
• Connect via USB
• Supports .bin and .hex firmware files
Standard: 0x08000000
Quick Guide
1. DFU Mode (WebUSB)
• Connect STM32 via USB
• Set BOOT0 to HIGH (3.3V)
• Press RESET button
• Click "Connect Device"
2. Serial Mode (WebSerial)
• Connect UART adapter
• Set BOOT0 to HIGH
• Press RESET button
• Select baud rate & connect
3. Flash Firmware
• Choose .bin or .hex file
• Set flash address
• Click "Flash Firmware"
• Wait for completion