Diff: DetectFreqAboveTH.h

Revision:

0:7672973d6bed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DetectFreqAboveTH.h	Thu Oct 08 05:35:04 2015 +0000
@@ -0,0 +1,49 @@
+#pragma once
+
+/** Detected Iteration Above Threshold in Unit Time.
+ *  Check if Frequency (iteration count in Unit time) above Threshold.
+ *
+ *  CATION. max interval is 0xfff0: 65,520ms.
+ *          max iter threshold is 0xffff.
+ *              (threfore, using 131KB with span[0xffff].)
+ */
+/** Sample code
+#include "mbed.h"
+#include "DetectFreqAboveTH.h"
+
+DigitalOut led1(LED1);
+DigitalOut led4(LED4);
+
+DetectFreqAboveTH chkErrIter(5000, 100);
+
+int main()
+{
+   while(1) {
+       led1= !led1;
+       if(chkErrIter.chkAbove()) {
+           led4= !led4;
+           wait_ms(5100);
+       }
+       wait_ms(20);
+   }
+}
+*/
+
+#include "mbed.h"
+#include "myTimer.h"
+
+class DetectFreqAboveTH
+{
+public:
+    DetectFreqAboveTH(int time_ms, int iter);
+    ~DetectFreqAboveTH();
+
+    bool chkAbove();
+
+private:
+    unsigned short id, iterThreshold, *span;   // circular buffer
+    unsigned int unitTime;
+// 16bit: 0xFFFF
+
+    myTimer timer;
+};
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