Diff: IIR_filter.h

Revision:

0:8e87cdf07037

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/IIR_filter.h	Fri Jan 31 17:59:21 2020 +0000
@@ -0,0 +1,36 @@
+#ifndef IIR_FILTER_H_
+#define IIR_FILTER_H_
+
+#include "mbed.h"
+
+class IIR_filter{
+     
+     public:
+     
+        IIR_filter(float T, float Ts);
+        IIR_filter(float T, float Ts, float K);
+        IIR_filter(float w0, float D, float Ts, float K);
+        IIR_filter(float *b, float *a, int nb, int na);
+        IIR_filter() {};
+                    
+        float operator()(float u){
+            return filter(u);
+         }
+         
+        virtual ~IIR_filter();
+        
+        void    setup(float T, float Ts, float K);
+        void    reset(float val);
+        float   filter(float input);
+        
+    private:
+
+        uint8_t nb;
+        uint8_t na;
+        float   *B;
+        float   *A;
+        float   *uk;
+        float   *yk;
+        float   K;
+};
+#endif
\ No newline at end of file