#ifndef _FIR_H__ #define _FIR_H__ #define FIR_Ceof_Len 16 typedef struct { float X[FIR_Ceof_Len]; int k; }Fir_t; void Fir_init(Fir_t *); float Fir_Filter(Fir_t *fir, float in); #endif /*_FIR_H__ */