SBSFU by MCUBoot on STM32U585 unable to load firmware with Minicom

[Gautier MELOT]

Hello,

I’m using the SBSFU by MCUboot implementation from the STM32CubeU5 Project (here).

It works well on the target board (U585) and I succeeded at uploading a new firmware through Teraterm, as per the documentation :

 

 

But our teams cannot all have access to a PC with Windows, and as such I attempted to make an upload with Minicom on Linux (Ubuntu) instead, which did not work (I added the “Bytes” logging before the “Abort from user” message) :

 

 

I saw much discussions about a similar problem on the legacy SBSFU 2.4 / 2.7 (this one or this one for example), but none for the one using MCUboot. I’ve still tried most of the solutions proposed there, but to no avail.

 

I’ve tried fiddling around the code to see why the Ymodem protocol was failing through Minicom, but haven’t found much actionable information up to now.

Has anyone encountered this problem and may know how to patch it or work around it ?

I’ll continue to investigate on my end and document my eventual findings here.

 

Thanks in advance,

 

Best regards,

Gautier MELOT.