-extern int LegicRfReader(int bytes, int offset);
-extern void LegicRfWriter(int bytes, int offset);
-extern void LegicRfRawWriter(int offset, int bytes);
+extern int LegicRfReader(int offset, int bytes, int iv);
+extern void LegicRfWriter(int offset, int bytes, int iv);
+extern void LegicRfRawWriter(int address, int data, int iv);