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I've had a lot of trouble trying to link and use arm_rfft_fast_f32. The problem seems to be centered around the arm_bitreversal2.S file.
At first it wasn't linking, but I finally got things to compile by adding: C_SOURCES = $(wildcard ../../libDaisy/Drivers/CMSIS/DSP/Source/*/*.c) ASM_SOURCES = $(wildcard ../../libDaisy/Drivers/CMSIS/DSP/Source/*/*.s)
to the makefile and changing the filename to arm_bitreversal2.s since the makefile doesn't handle files with ".S" instead of ".s".
The program seems to compile successfully at this point, but nothing gets passed through the FFT/IFFT no matter what I do. Even a simple program like this in the audio callback will only pass audio through the right channel and there's nothing on the left.
for (size_t i = 0; i < size; i++){
fft_buf_256[i] = in[0][i];
}
arm_rfft_fast_f32(&fft_256, fft_buf_256, fft_buff_256_inner, 0);
arm_rfft_fast_f32(&fft_256, fft_buff_256_inner, fft_buf_256, 1);
for (size_t i = 0; i < size; i++){
out[0][i] = fft_buf_256[i];
out[1][i] = in[1][i];
}
I'm declaring the FFT instance with: arm_rfft_fast_instance_f32 fft_256;
and initializing with in main() with: arm_rfft_fast_init_f32(&fft_256, 256);.
Am I missing something? Is there any reason why the CMSIS FFT shouldn't be working at this point? Could arm_bitreversal2.s not be building or linking correctly for some reason? I've not really use makefiles before so I admit that I'm taking tips from forums and trying to hack a solution together. I'm completely at a loss for what to try next to get this to work. Thank you for the help.
The text was updated successfully, but these errors were encountered:
Hello,
I've had a lot of trouble trying to link and use
arm_rfft_fast_f32
. The problem seems to be centered around thearm_bitreversal2.S
file.At first it wasn't linking, but I finally got things to compile by adding:
C_SOURCES = $(wildcard ../../libDaisy/Drivers/CMSIS/DSP/Source/*/*.c)
ASM_SOURCES = $(wildcard ../../libDaisy/Drivers/CMSIS/DSP/Source/*/*.s)
to the makefile and changing the filename to
arm_bitreversal2.s
since the makefile doesn't handle files with ".S" instead of ".s".The program seems to compile successfully at this point, but nothing gets passed through the FFT/IFFT no matter what I do. Even a simple program like this in the audio callback will only pass audio through the right channel and there's nothing on the left.
I'm declaring the FFT instance with:
arm_rfft_fast_instance_f32 fft_256;
and initializing with in
main()
with:arm_rfft_fast_init_f32(&fft_256, 256);
.Am I missing something? Is there any reason why the CMSIS FFT shouldn't be working at this point? Could
arm_bitreversal2.s
not be building or linking correctly for some reason? I've not really use makefiles before so I admit that I'm taking tips from forums and trying to hack a solution together. I'm completely at a loss for what to try next to get this to work. Thank you for the help.The text was updated successfully, but these errors were encountered: