2 files changed, 34 insertions, 18 deletions
diff --git a/src/counter.cpp b/src/counter.cpp
new file mode 100644
index 0000000..89e597c
--- /dev/null
+++ b/src/counter.cpp
@@ -0,0 +1,21 @@
+#include "counter.h"
+
+Counter::Counter(PinName pin):_interrupt(pin)
+{
+	_interrupt.rise(this, &Counter::increment);
+}
+
+void Counter::increment()
+{
+	_count++;
+}
+
+int Counter::read()
+{
+	return _count;
+}
+
+void Counter::write(int new_count)
+{
+	_count = new_count;
+}
diff --git a/src/counter.h b/src/counter.h
index e47475e..cc3e2f4 100644
--- a/src/counter.h
+++ b/src/counter.h
@@ -1,24 +1,19 @@
-#include "mbed.h"
+#ifndef COUNTER_H
+#define COUNTER_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;
-    }
+#include "mbed.h"
 
-    void write(int new_count) {
-        _count = new_count;
-    }
- 
+class Counter
+{
 private:
     InterruptIn _interrupt;
     volatile int _count;
+
+public:
+    Counter(PinName pin);
+    void increment();
+    int read();
+    void write(int new_count);
 };
+
+#endif