The size looks like around 107KB of libarm_cortexM4lf_math.a library, the total flash is 64KB in STM32F334x SoC. Could you let me know if I want to perform FFT (Fast Fourier Transformation), is there any alternative or light weight library I can use. My final goal is to read out data from LEM CTSR sensor, calculate the residual current using adc sampling and apply FFT, transfer the data over 1-wire.
