We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hi, I am currently trying out some CMSIS DSP examples. Particularly the FFT example. I have added the required libraries files. But I am repeatedly getting the following error.
undefined reference to `arm_bitreversal_32'
I have also included arm_cortexM4lf_math.lib file. But the error persists. Can someone help me with this.
I tried importing the arm_bitreversal_32.S file. Still no success.
Sounds like an Eclipse problem - not Keil ... ?
Is it actually building that and generating a .o object? Is the linker pulling that?
How about command line defines, what options/defines are being passed to the compiler/linker?
Check the .S file for defines it might be using to selectively build portions.
Can it use _RBIT or some equivalent intrinsic, is that predicated on a command line define? Review where arm_bitreversal_32 is called, and dependencies/predication there.