commiting code that didnt work properly on new branch

include/analog_out.h

@@ -0,0 +1,20 @@
+#ifndef ANALOG_OUT_H
+#define ANALOG_OUT_H
+
+#include <timer_msec.h>
+#include <digital_out.h>
+
+class Analog_out
+{
+public:
+    Analog_out(int pin);
+    void init(int period_ms = 1000);
+    void set(int duty_cycle);
+
+private:
+    Timer_msec timer;
+public:    
+    Digital_out pin;
+};
+
+#endif // ANALOG_OUT_H