+#define USBTMC_CTL_INITIATE_ABORT_BO 0x01
+#define USBTMC_CTL_CHECK_ABORT_BO_STAT 0x02
+#define USBTMC_CTL_INITIATE_ABORT_BI 0x03
+#define USBTMC_CTL_CHECK_ABORT_BI_STAT 0x04
+#define USBTMC_CTL_INITIATE_CLEAR 0x05
+#define USBTMC_CTL_CHECK_CLEAR_STAT 0x06
+#define USBTMC_CTL_GET_CAPABILITIES 0x07
+#define USBTMC_CTL_INDICATOR_PULSE 0x40
+#define USB488_CTL_READ_STATUS_BYTE 0x80
+#define USB488_CTL_REN_CONTROL 0xa0
+#define USB488_CTL_GO_TO_LOCAL 0xa1
+#define USB488_CTL_LOCAL_LOCKOUT 0xa2
+
+#define USBTMC_CAP_IF_INDICATOR_PULSE (1<<2)
+#define USBTMC_CAP_IF_TALKONLY (1<<1)
+#define USBTMC_CAP_IF_LISTENONLY (1<<0)
+#define USBTMC_CAP_DEV_TERMCHAR_SUPP (1<<0)
+#define USB488_CAP_IF_4882 (1<<2)
+#define USB488_CAP_IF_LOCKOUT (1<<1)
+#define USB488_CAP_IF_TRIGGER (1<<0)
+#define USB488_CAP_DEV_SCPI (1<<3)
+#define USB488_CAP_DEV_SR1 (1<<2)
+#define USB488_CAP_DEV_RL1 (1<<1)
+#define USB488_CAP_DEV_DT1 (1<<0)
+
+#define USBTMC_STATUS_SUCCESS 0x01
+#define USBTMC_STATUS_PENDING 0x02
+#define USBTMC_STATUS_FAILED 0x80
+#define USBTMC_STATUS_TRANS_NIP 0x81
+#define USBTMC_STATUS_SPLIT_NIP 0x82
+#define USBTMC_STATUS_SPLIT_IP 0x83
+
+#define USBTMC_STATUS_SUCC(x) (x == USBTMC_STATUS_SUCCESS)
+#define USBTMC_STATUS_WARN(x) ((x > USBTMC_STATUS_SUCCESS) && (x < USBTMC_STATUS_FAILED))
+#define USBTMC_STATUS_FAIL(x) (x >= USBTMC_STATUS_FAILED)
+