How can I upgrade the firmware on STM32 F446RE by using UART pins from Linux?

[SSoni]

I tried upgrading the firmware on the STM32 F446RE board by accessing the usb-dfu. I used DFU-UTIL library for it. But as it turns out, we won't be able to upgrade the firmware using usb-dfu if the code already present on the board has UART or SPI or I2C code already running. How can I solve this problem?

I found one solution that we can upgrade firmware through UART bootloader but the software that was used was just for windows. I want something for upgrading firmware through linux, something like the dfu-util library.

Please help

Cheers,

Siddharth

[Tesla DeLorean]

There are open source examples for the UART based loader, and the protocol itself is not unduly complex.

You might however want to build your own loader, and provide a more user friendly process. Here we use X-Modem, and protocol supported by every terminal application of merit. It provides for a level of integrity check and flow control/pacing which works well for firmware updates.

Use of your own loader would also permit you to secure your firmware.​