Bootloader via UART on NUCLEO-H755ZI-Q

Domy_ST · ‎2026-03-04

Hi ST Community,

I'm wondering if there's a sample project for a UART Bootloader for the NUCLEO-H755ZI-Q series.

Thanks for your support

mƎALLEm · ‎2026-03-04

+

AN3155 «How to use USART protocol in bootloader on STM32 MCUs »

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mƎALLEm · ‎2026-03-04

Do you mean a custom bootloader over UART?

PS: I don’t see why posting this question in CubeIDE forum board!

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Domy_ST · ‎2026-03-04

not customized but a minimal example of bootloader operation via uart (.bin file)

Andrew Neil · ‎2026-03-04

I think the question was "custom bootloader" vs the System bootloader in ROM ?

So custom bootloader:

X-CUBE-IAP-USART
AN4657, STM32 in-application programming (IAP) using the USART

System bootloader:

AN2606, Introduction to system memory boot mode on STM32 MCUs

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

mƎALLEm · ‎2026-03-04

A question on a minimal example of « something » needs to be posted in Embedded software forum board. CubeIDE forum is only dedicated to raise question/issues on the tool or to suggest an enhancement. This post will be moved then.
Thank you.

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mƎALLEm · ‎2026-03-04

+

AN3155 «How to use USART protocol in bootloader on STM32 MCUs »

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Domy_ST · ‎2026-03-04

Thanks for the documentation, I meant some examples already developed for that series

mƎALLEm · ‎2026-03-04

Why don’t use the ST bootloader like indicated by the application notes provided above?

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TDK · ‎2026-03-04

https://github.com/STMicroelectronics/stm32-mw-openbl

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