DSP Basicmath source file does not seem to be included in the build error undefined reference to `zdsp_mult_f32' SDK2.6.1

RE: DSP Basicmath source file does not seem to be included in the build error undefined reference to `zdsp_mult_f32' SDK2.6.1

kalbani — Thu, 05 Sep 2024 06:36:56 GMT

Oh Thank you Vidar I see the issue.

you have "CONFIG_DSP=y" in your proj.conf while I didn't

I thought only "CONFIG_CMSIS_DSP=y" was required

that fixed it for me.

RE: DSP Basicmath source file does not seem to be included in the build error undefined reference to `zdsp_mult_f32' SDK2.6.1

Vidar Berg — Wed, 04 Sep 2024 11:10:43 GMT

I quickly tested this by modifying the the "hello world" sample, but was unable to reproduce the error. Please try to build this example (included below) and see if you get the same result.

devzone.nordicsemi.com/.../hello_5F00_world_5F00_dsp.zip

RE: DSP Basicmath source file does not seem to be included in the build error undefined reference to `zdsp_mult_f32' SDK2.6.1

kalbani — Wed, 04 Sep 2024 05:14:11 GMT

Dear Vidar,
Even with CONFIG_DSP_BACKEND_CMSIS=y
I still get this error fatal error: zdsp_backend.h: No such file or directory
43 | #include "zdsp_backend.h"
so I thoiught it was better to comment it out. still I tried it again and got the same error.
but my problem is not with the backend I just need to be able to use basic math functions from the library.
Regards,
Kalbani

RE: DSP Basicmath source file does not seem to be included in the build error undefined reference to `zdsp_mult_f32' SDK2.6.1

Vidar Berg — Mon, 02 Sep 2024 09:04:13 GMT

Hello,

[quote user=""]

There were multiple issues with the library first, there was a library included called "#include "zdsp_backend.h"" I had to comment it because it was undefined and gave me an error.

[/quote]

This suggests that you have not enabled a DSP backend. Please revert this change, and try adding CONFIG_DSP_BACKEND_CMSIS=y to your project configuration.

Best regards,

Vidar