Add counter class for inputs.

1 files changed, 20 insertions, 0 deletions

diff --git a/src/counter.h b/src/counter.h
new file mode 100644
index 0000000..e0126db
--- /dev/null
+++ b/src/counter.h
@@ -0,0 +1,20 @@
+#include "mbed.h"
+
+class Counter {
+public:
+    Counter(PinName pin) : _interrupt(pin) {        // create the InterruptIn on the pin specified to Counter
+        _interrupt.rise(this, &Counter::increment); // attach increment function of this counter instance
+    }
+ 
+    void increment() {
+        _count++;
+    }
+ 
+    int read() {
+        return _count;
+    }
+ 
+private:
+    InterruptIn _interrupt;
+    volatile int _count;
+};