I’ve been trying to get FFTS working as well. Using the additions to the makefile that @fredyeah suggested, it’s linking the .c files. However, it seems one of the files required for arm_rfft_fast_f32 is arm_bitreversal2.S.
Since this is an assembly file, the makefile doesn’t seem to have a rule for passing it to the compiler. I’ve tried several things, but I can’t seem to get it to work. Does anyone know how to set up the makefile to get this to work? This is the first time I’ve ever used makefiles and I’m finding it a bit confusing.
Or if anyone knows of any open source projects using FFTs on the Daisy, that would help immensely. I’ve not been able to find any code using FFTs to use as a model.
Thanks for the help.