--- /dev/null
+#define JTAGKEY_TCK 0x01
+#define JTAGKEY_TDI 0x02
+#define JTAGKEY_TDO 0x04
+#define JTAGKEY_TMS 0x08
+#define JTAGKEY_VREF 0x20
+#define JTAGKEY_OEn 0x10
+
+int jtagkey_init(unsigned short vid, unsigned short pid);
+void jtagkey_close();
+int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num);