-int CmdLFT55XX(const char *Cmd);\r
-int CmdT55xxBruteForce(const char *Cmd);\r
-int CmdT55xxSetConfig(const char *Cmd);\r
-int CmdT55xxReadBlock(const char *Cmd);\r
-int CmdT55xxWriteBlock(const char *Cmd);\r
-int CmdT55xxReadTrace(const char *Cmd);\r
-int CmdT55xxInfo(const char *Cmd);\r
-int CmdT55xxDetect(const char *Cmd);\r
-int CmdResetRead(const char *Cmd);\r
-int CmdT55xxWipe(const char *Cmd);\r
+extern int CmdLFT55XX(const char *Cmd);\r
+extern int CmdT55xxBruteForce(const char *Cmd);\r
+extern int CmdT55xxSetConfig(const char *Cmd);\r
+extern int CmdT55xxReadBlock(const char *Cmd);\r
+extern int CmdT55xxWriteBlock(const char *Cmd);\r
+extern int CmdT55xxReadTrace(const char *Cmd);\r
+extern int CmdT55xxInfo(const char *Cmd);\r
+extern int CmdT55xxDetect(const char *Cmd);\r
+extern int CmdResetRead(const char *Cmd);\r
+extern int CmdT55xxWipe(const char *Cmd);\r