Hey,
I found that sdk 12.3.0 (the latest for nrf51822) has example fpu_fft with linked CMSIS_DSP lib, but this lib is for cortex m4. I downloaded arm_cortexM0l_math.lib and already read that Nordic is official not supporting CMSIS libs. But anyway how can I use FFT for nrf51822? When I tried to translate this example code for nrf51 I got errors that I need define ARM Core, I used
#define ARM_MATH_CM0
In general case, i'd like to use fft, FIR, IIR, Butterworth filters in the future with this chip.
UPD: I could compile test code with cmsis dsp without errors, but got the problem with linker
Linking target: build/nrf51422_xxac.out collect2: fatal error: ld terminated with signal 11 [Segmentation fault: 11] compilation terminated.
