Add skeleton I2C files.

I2CPort.h

@@ -23,11 +23,12 @@
 #if !defined(I2CPORT_H)
 #define  I2CPORT_H
 
-#include "Globals.h"
+#include <cstdint>
+
 
 class CI2CPort {
 public:
-  CI2CPort();
+  CI2CPort(uint8_t n);
 
   bool init();
 
@@ -36,6 +37,7 @@ public:
   uint8_t writeData(const uint8_t* data, uint8_t length);
 
 private:
+  bool m_ok;
 };
 
 #endif