Error[Li005]: no definition for "arm_cfft_init_1024_f32" [referenced from ..\IAR-CMSIS-DSP\Examples\cortexM4lf\Obj\arm_fft_bin_example\arm_fft_bin_example_f32.o]

[vipinthomas123]

Apologies for a simple question here, I've followed the usage instructions and explored all option to resolve the issue but with no luck.

We are are having trouble in compiling the arm_fft_bin_example.ewp. There is linker error for the arm_cfft_init_1024_f32 function.

I have added below library - C:\Program Files\IAR Systems\Embedded Workbench 9.2\arm\CMSIS\Lib\IAR\iar_cortexM4lf_math.a

I have added below path for header files - ..\IAR-CMSIS-DSP\CMSIS_5\CMSIS\Core\Include ..\IAR-CMSIS-DSP\CMSIS-DSP\Include ..\IAR-CMSIS-DSP\CMSIS-DSP\Include\dsp

Development environment

Are we missing any additional settings.

Additionally can anyone please confirm example is for 1024 samples but testInput_f32_10khz (test input data) is of 2048, it is always expected the data samples to be double of processing samples??

[JonatanAntoni]

Hi @vipinthomas123,

Can you share the specific linker error you are getting? For the details, I am pretty sure @christophe0606 can provide answers.

Please take note that we splittet off CMSIS-DSP into its own repo a while ago. You find it's new home at https://github.com/ARM-software/CMSIS-DSP. The library became its own pack, so it might be much easier to update it independently from other software components, now.

[christophe0606]

@vipinthomas123 Note that the function arm_cfft_init_1024_f32 is recent. If you're using a too old CMSIS-DSP you won't get it. Please open a new github issue on the CMSIS-DSP repository

[vipinthomas123]

@JonatanAntoni Thanks for the information.

@christophe0606 Thanks for the reply. will create the new issue on the CMSIS-DSP repository,

New Issue link - https://github.com/ARM-software/CMSIS-DSP/issues/200 Closing this issue. Thank you.