Is it possible to download firmware using UART?

[AhnByungwhui]

I'm using STM32H733VGT6, STM32F030CCT6 and LTE module.

As show as attached picture, it is conneted via UART.

I want to recieve data through LTE and connect STM32H733VGT or STM32F030CCT to DFU to download firmware.

Is it possible with UART?

STM32H733VGT have USB DFU, but I want to use UART.

Are there any circuits or materials that might be helpful?

 

[SofLit · Accepted solution]

Hello,

It's possible to download the FW over UART using STM32 system bootloader. So, you need to refer to the following application notes on how to handle that:

https://www.st.com/resource/en/application_note/an2606-stm32-microcontroller-system-memory-boot-mode-stmicroelectronics.pdf

https://www.st.com/resource/en/application_note/an3155-usart-protocol-used-in-the-stm32-bootloader-stmicroelectronics.pdf

[Andrew Neil]

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@AhnByungwhui wrote:

Is it possible with UART?

Yes - and with other interfaces, too!

https://community.st.com/t5/stm32-mcus-products/how-can-i-use-an-esp32-to-update-the-firmware-of-an-stm32-from/m-p/696326/highlight/true#M254867

https://community.st.com/t5/stm32-mcus-products/how-can-i-use-an-esp32-to-update-the-firmware-of-an-stm32-from/m-p/696331/highlight/true#M254868