Set MACSSIR Sub-second increment register

[maniek]

Im can not set SNSINC-bits from MACSSIR Sub-second Increment Register. Other Bits like SSINC I can set without problem ! (STM32H745XIH6U Discovery Kit ). Look like a Bug ?

[Uwe Bonnes]

The description of the SNSINC register shows several restrictions. Are you sure none of these restrictions applies for your setup?

[maniek]

Hi Uwe,

Im found only this restriction :

>> The Sub-second Increment register is present only when the IEEE 1588 timestamp feature is selected without an external timestamp input.

this same restiction is for other register like MACTSAR, MACSTSUR, MACSTNUR .... and I can the all register write without problems.

SNSINC is only a part from MACSSIR and only this part I can not write ! ?

Thanks !

[maniek · Accepted solution]

Ok , im new Reference Manual from 27 feb 2020 MACSSIR have only SSINC (SNSINC is removed :)

Thanks !