nRF52810 and errata 185

RE: nRF52810 and errata 185

Michael Hunold — Fri, 14 Jan 2022 08:31:09 GMT

I understand that not every aspect of the device is disclosed to the public in the datasheet. However:

[quote userid="7377" url="~/f/nordic-q-a/83589/nrf52810-and-errata-185/347661#347661"]but you can see from how they are used extensively in the MDK (nrf52_erratas.h) that this contains information used to determine if a specific errata workaround applies to the device or not, and this has to do with device type and revision.[/quote]

Exactly because these registers are used to check device type and revision it makes them important registers that are necessary when you want to manually check this information in your own application for example.

Of course you can argue that this is all handled by the SDK and that customers should not worry, but there are people out there that like to understand and handle these things even at this very low level.

So if you could raise awareness for this internally this would be great - I would appreciate if these register would be disclosed to the public as well.

Thanks for your answers, from my side this ticket can be closed.

RE: nRF52810 and errata 185

Einar Thorsrud — Thu, 13 Jan 2022 18:50:32 GMT

Hi,

This erratum is not officially documented, so I cannot say much about it. But the workaround is effective, and is only applied to revision 1 devise, which has not been produced for a long time.

Regarding the magic registers 0x10000130 and 0x10000134 there are also not documented, but you can see from how they are used extensively in the MDK (nrf52_erratas.h) that this contains information used to determine if a specific errata workaround applies to the device or not, and this has to do with device type and revision.

RE: nRF52810 and errata 185

Michael Hunold — Thu, 13 Jan 2022 16:23:41 GMT

Thank you very much for your answer. But in any case this information is missing from the list of erratas and for the sake of completeness it would be nice to have that information up-to-date.

Can you also comment on these "magic" registers that are used in the errata functions for checking if a device is affected or not?

RE: nRF52810 and errata 185

Einar Thorsrud — Wed, 12 Jan 2022 14:34:38 GMT

Hi,

The code snippet you have found in the MDK is a workaround for an undocumented issue that only exist in revision 1 of the nRF52810. It does not exist in revision 2, nor in any other nRF52 devices.