STWINKT1B does not work at all

[BVido.1]

Hello,

I have a big problem with my STWINKT1B. I wanted to load another binary file to it but there was no room left. So in STM32CubeProgrammer, I erased the flash memory. Now the green and orange LEDs do not light up and I can't access the board through TeraTerm and ST-LINK !

Hope that someone can provide some help,

Thanks !

[Eleon BORLINI · Accepted solution]

Hi @Benoît Vidotto​ ,

It may be an issue related to the bootloader section of the code: you might have overwritten it, so I suggest you to restore it, using the file with the bootloader, in the FP-IND-PREDMNT1 firmware function pack.

The procedure is described in the UM2566 user manual, page 7 (STM32CubeProgrammer + DFU mode).

For example, you can use the STM32L4R9ZI-STWIN_PredictiveMaintenance_BL_v2.3.0.bin, which is the factory firmware of the STWINKT1B, that you can find in \Projects\STM32L4R9ZI-STWIN\Demonstrations\Predictive_Maintenance_BLE\Binary folder.

If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

-Eleon

[BVido.1]

Hi Eleon,

The next morning after I had the problem, the board worked again. I suspect I indeed used the bootloader from FP-IND-PREDMNT1.

Thanks for your help,

Benoît