Revision 0:b89384fab7bf, committed 2019-10-24

Comitter:

ykuroda

Date:

Thu Oct 24 02:56:58 2019 +0000

Commit message:

Encoder (single state) class library

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/encoder.h	Thu Oct 24 02:56:58 2019 +0000
@@ -0,0 +1,33 @@
+//
+//  Encoder Class
+//
+//  2019.10.13 ... Originally written by Y.Kuroda
+//
+#ifndef _COUNTER_H
+#define _COUNTER_H
+
+class Encoder {
+  public:
+    Encoder(PinName pin) : _interrupt(pin), _count(0) {       // create the InterruptIn on the pin specified to Counter
+        _interrupt.rise(callback(this, &Encoder::increment)); // attach increment function of this counter instance
+        _interrupt.fall(callback(this, &Encoder::increment)); // attach increment function of this counter instance
+    }
+
+    void increment() { _count++; }
+    int read() const { return _count; }
+    int set(int c) { return _count=c; }
+    int reset(){ return set(0); }
+
+    int operator=(int c) { return set(c); }
+//    Encoder& operator=(Encoder& c){ return *this; }
+//    int operator=(Encoder& c){ return read(); }
+
+    operator int() const { return read(); }
+
+  protected:
+    InterruptIn _interrupt;
+    volatile int _count;
+};
+
+#endif
+