Diff: Filter/Filter.h

Revision:

144:a9e7fa1c98d7

Child:

146:296bcc30e65d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filter/Filter.h	Wed May 03 12:24:28 2017 +0000
@@ -0,0 +1,25 @@
+#include "mbed.h"
+#include "math.h"
+
+class CircularBuffer {
+public:
+    CircularBuffer(int length);
+    float oldest() {if (oldest_index >= 0) return buf[oldest_index]; return 0.0f;}
+    float newest() {if (newest_index >= 0) return buf[newest_index]; return 0.0f;}
+    int length() {return _length;}
+    void add(float x); /*recomputes mean, median - O(length) time*/
+    float &at(int index);
+public:
+    float &operator[](int index) {return at(index);}
+public:
+    /*O(1) time*/
+    float mean();
+    float median();
+private:
+    int _length;
+    int oldest_index, newest_index, num;
+    float sum;
+private:
+    float *buf;
+    float *sorted;
+};
\ No newline at end of file