start integration of mqtt

Metro/Metro.h

@@ -0,0 +1,26 @@
+
+
+#ifndef Metro_h
+#define Metro_h
+
+#include <inttypes.h>
+
+class Metro
+{
+
+public:
+  Metro(unsigned long interval_millis);
+  Metro(unsigned long interval_millis, uint8_t autoreset);
+  void interval(unsigned long interval_millis);
+  char check();
+  void reset();
+	
+private:
+  uint8_t autoreset;
+  unsigned long  previous_millis, interval_millis;
+
+};
+
+#endif
+
+