TRIM.LINCALCOEFF

[AndersG0]

Hello,
read through the documentation about the SAADC and found the TRIM.LINCALCOEFF[n] register.
ADC-linearity is important in the project I'm involved in... 
Seems that the register is available on all 54L devices

Can you share any information how to use it? 

Kind regards, Anders

[AndersG0]

Thanks, I have the contact details of my RSM, we can close the issue now.

Kind regards, Anders

[AndersG0]

Håkon,
With reference to the above now closed ticket.
After the last communication, I was in contact with my RSM and there will be a new production batch of nrf54lm20a any day now.

Also looked at what is supported in the latest SDK 3.2.3, which I use:
From what I could see, none of the nrf54LXX-SOCs seem to be supported, only nrf54h20_types(.h) and nrf9230_engb_types(.h).
That is, NRF_FICR_HAS_GLOBAL_SAADC_LINCALCOEFF, was not defined for any others...

If I understand the matter correctly, the SDK will need to be updated for the whole thing to work without modification.
Is it in the pipeline to be done soon?

[Håkon Alseth]

Hi,

 

Oh, you are indeed correct! Sorry about that mis-alignment from my side.

The correct placement for the nRF54L-series devices is in the system file:

https://github.com/zephyrproject-rtos/hal_nordic/blob/master/nrfx/bsp/stable/mdk/system_nrf54l.c#L141-L142

 

If calibration is required, the loading from ficr to the appropriate peripheral will be included.

 

Kind regards,

Håkon

[AndersG0]

Thanks a lot!
As newbie to both the 54L and the "zephyr / nrfConnect" environment,
its interesting to get a little bit under the bonnet and understand how things work. 

[Håkon Alseth]

Hi,

 

Happy to help out!

AndersG0 said:

its interesting to get a little bit under the bonnet and understand how things work. 

If you are interested in how the RTOS works, I can recommend looking at our dev academy:

https://academy.nordicsemi.com/

 

The quiz after each exercise is quite educational.

 

Kind regards,

Håkon