Open source flash program for STM32 using the ST serial bootloader
FreeFlash STM32 microcontrollers via serial bootloader
FreeFree tier
About Open source flash program for STM32 using the ST serial bootloader
stm32flash is an open-source command-line tool for flashing STM32 microcontrollers via the built-in serial bootloader. It supports a wide range of STM32 families and provides a simple interface for programming flash memory over a serial connection.
Key Features
Supports many STM32 families
Uses ST serial bootloader protocol
Command-line interface
Cross-platform (Linux, Windows, macOS)
Open source licensed
Pros & Cons
Pros
- Free and open source
- Reliable flashing using standard bootloader
- No proprietary software required
- Works on multiple operating systems
Cons
- Requires hardware serial connection (UART)
- Only supports serial bootloader (not JTAG/SWD)
- May have limited speed compared to JTAG/SWD programmers
Best For
Programming STM32 microcontrollers in development and productionFlashing firmware updates via UARTRecovering bricked STM32 devices with bootloader access