nRF9160 SES TWIS (i2c slave) implementation

RE: nRF9160 SES TWIS (i2c slave) implementation

Sigurd — Fri, 02 Oct 2020 07:42:36 GMT

[quote user="SmartEnrg"]I think they are referring to approach in shared link (existing nrf API) being Not supported in Zephyr(?)[/quote]

As I understand it, pabigot refers to anangl's comment "It is not feasible to use nRF TWIS peripherals via the I2C slave API that is currently available in Zephyr. ".

[quote user="SmartEnrg"]is it still valid approach with ncs v1.3.1 on nRF9160-DK?[/quote]

Yes, I believe so, it should be fully possible to use the nrfx driver directly instead, with the approach anangl explains.

RE: nRF9160 SES TWIS (i2c slave) implementation

Smart.Enrg — Thu, 01 Oct 2020 15:59:39 GMT

Thanks Sigurd,
I did glance through the link you shared but at the end pabigot warns "the existing API cannot be supported for NRF, so I'm going to close this". I think they are referring to approach in shared link (existing nrf API) being Not supported in Zephyr(?)
pabigot further mentions replacement implementation - https://github.com/zephyrproject-rtos/zephyr/issues/27675 looking through that link, it states right up top - "It is also unsuitable for DMA-based solutions" such as Nordic TWIS, right?
Therefore my question - is the approach in https://github.com/zephyrproject-rtos/zephyr/issues/21445 (over a year old) is it still valid approach with ncs v1.3.1 on nRF9160-DK?
Thanks,
SE

RE: nRF9160 SES TWIS (i2c slave) implementation

Sigurd — Thu, 01 Oct 2020 12:01:23 GMT

Hi,

[quote user=""]Question I have - is there nrfx sample that shows how this could be done, using SES?[/quote]

I have not seen any samples for this, but anangl explains some of the steps you need to follow in order to get it to work here:

https://github.com/zephyrproject-rtos/zephyr/issues/21445