• Support for SPI flash programming
• Works on Nucleo-L476RG board
• Capable of stable communication at 921600 UART baud rate and 10 MHz SPI frequency
• Supports disabling of output driver so you don't have to disconnect the programmer to boot the platform

Currently, only Nucleo-L476RG is supported, in the future, other boards as well as non-ST platforms may be added.

If you don't have Rust already, install it from rustup.rs.

Connect Nucleo and type cargo run to build and upload app to the device.

Programmer-host communication works through ST-Link serial port (USB-to-Serial function available on all Nucleo boards).

Following pins are used (you can refer to Mbed OS documentation for pinout)

Note: POWER pin generally shouldn't be used for powering SPI flash directly but for controlling an external power source. Maximum power draw of Nucleo pins is limited to 20mA.

Example usage:

flashrom --progress -p serprog:dev=COM12:921600 -r bios_backup.rom
flashrom --progress -p serprog:dev=COM12:921600 -w coreboot.rom