Diff: counter.h

Revision:

2:83a817de162e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/counter.h	Mon Oct 14 02:35:03 2019 +0000
@@ -0,0 +1,31 @@
+//
+//  Counter Class
+//
+//  2019.10.13 ... Originally written by Y.Kuroda
+//
+#ifndef _COUNTER_H
+#define _COUNTER_H
+
+class Counter {
+  public:
+    Counter(PinName pin) : _interrupt(pin), _count(0) {       // create the InterruptIn on the pin specified to Counter
+        _interrupt.rise(callback(this, &Counter::increment)); // attach increment function of this counter instance
+        _interrupt.fall(callback(this, &Counter::increment)); // attach increment function of this counter instance
+    }
+
+    void increment() { _count++; }
+    int read() { return _count; }
+    int set(int c) { return _count=c; }
+    int reset(){ return set(0); }
+
+    int operator=(int c) { return set(c); }
+    operator int() { return read(); }
+    Counter& operator=(Counter& c){ _count=c.read(); return *this; }
+
+  protected:
+    InterruptIn _interrupt;
+    volatile int _count;
+};
+
+#endif
+