How to use CMSIS DSP library on NRF5340?

RE: How to use CMSIS DSP library on NRF5340?

Carl Richard — Thu, 07 Jan 2021 10:17:40 GMT

Hi!

My pleasure. Good to hear that it works!

In order to enable FPU you must enable it through the configuration, as you describe in your comment. I believe that should be enough!

Best regards,
Carl Richard

RE: How to use CMSIS DSP library on NRF5340?

squwal — Thu, 07 Jan 2021 01:23:23 GMT

Thank you Carl! I have found the examples and successfully built it. And there is a question that, should i need to do some extra work to enable the FPU? In SES menu Project->configure nRF SDK Project-> Floating Point Options-> Enable Floating Point Unit is unchecked, shoud i need to turn it on manully or somthing else?

RE: How to use CMSIS DSP library on NRF5340?

Carl Richard — Mon, 04 Jan 2021 14:21:11 GMT

Hi again!

Those examples are not a part of the nRF Connect SDK, but included parts of the Segger Embedded Studio nordic edition.

For CMSIS DSP in NCS I suggest that you check out the cmsis_dsp tests located under <zephyr_root>\zephyr\tests\lib\cmsis_dsp. They should work for the nRF5340 and give insight on how the library can be used.

Best regrds,
Carl Richard

RE: How to use CMSIS DSP library on NRF5340?

squwal — Mon, 04 Jan 2021 13:23:55 GMT

nRF Connect SDK v1.4.99-dev1, SEGGER v5.30a, nRF CMSIS-DSP Samples in C:\Users\User\Nordic\SEGGER Embedded Studio\v3\packages\nRF\Project\Example

RE: How to use CMSIS DSP library on NRF5340?

Carl Richard — Mon, 04 Jan 2021 09:05:49 GMT

Hi, Squwal!

I can't seem to find any sample named "nRF CMSIS-DSP Samples". Could you please inform me of the sample path as well as what version of the nRF Connect SDK you are using?

Best regards,
Carl Richard