+
+ // TODO - possible poor names...
+#define STLINK_SWD_ENTER 0x30
+#define STLINK_SWD_READCOREID 0x32 // TBD
+
+// cortex m3 technical reference manual
+#define CM3_REG_CPUID 0xE000ED00
+#define CM3_REG_FP_CTRL 0xE0002000
+#define CM3_REG_FP_COMP0 0xE0002008
+
+/* Enough space to hold both a V2 command or a V1 command packaged as generic scsi*/
+#define C_BUF_LEN 32