STM32F411 JTAG setting bug

[hjuns]

Hello,

I use CubeMx (6.6.1), STM32F411CCUx

​CubeMx causes a problem when 'PB4' pin and JTAG (4 pin) are used together.

​

If JTAG (4pin) is set in CubeMx, PB4 is not used.

If i set something in PB4, JTAG is released.

In the datasheet, PB4 and debug have nothing to do with it.

​What should I do...

Thanks for reading.

[Uwe Bonnes]

It is a long standing errata that JNTRST can not be used otherwise when JTAG is needed.

[Semer CHERNI]

Hello @hjuns​ 

First let me thank you for having reported :smiling_face_with_smiling_eyes:

Actually you're right, I've been able to reproduce the same misbehavior from my side when using the same configuration as you.

This problem is raised internally to be reviewed. I'll keep you posted with the updates.

Internal ticket number: 132092 (This is an internal tracking number and is not accessible or usable by customers).

Thanks for your contribution.

Semer.

[Semer CHERNI]

Hello @hjuns​ 

The issue is fixed in the STM32CubeMx 6.7.0 release available on ST website.

Semer.

[Uwe Bonnes]

But will the hardware issue get fixed sometimes?