STM32 CRYP AES functional description error in the Ref manual ?

[Gpeti]

Follow up of my previous messages on AES-GCM on STM32H753.

I think that the ref manual is wrong:

 

I implemented my code this way and the busy bit never clears.

The HAL code is not polling on this bit neither.

i've checked on other STM32 ref manuals it is the same description.

Could someone from ST confirm this is a documentation bug or a misunderstanding from my side ?

[Bubbles]

Hello @Gpeti​ ,

the RM0433 is addressing several revisions of the AES IP with one text. Less than ideal condition, I'll raise the issue internally. The HAL is addressing this in CRYP_Workaround() function.

Using HAL you should have no problem.

BR,

J

[Gpeti]

"he RM0433 is addressing several revisions of the AES IP with one text" I don't think so. What section of the document are you referring to ?

Also CRYP_Workaround() is for older versions of AES IP (ie. not the AES of latest STM32H753).