Status Bitfields - neoVI API
C/C++ declare - Remarks - C/C++ example

There are two status bitfields in the message structures that define specific attributes of the message. The two status bitfields are named StatusBitfield and StatusBitfield1.

C/C++ Declare

const long SPY_STATUS_GLOBAL_ERR = 0x01;
const long SPY_STATUS_TX_MSG = 0x02;
const long SPY_STATUS_XTD_FRAME = 0x04;
const long SPY_STATUS_REMOTE_FRAME = 0x08;

const long SPY_STATUS_CRC_ERROR = 0x10;
const long SPY_STATUS_CAN_ERROR_PASSIVE = 0x20;
const long SPY_STATUS_INCOMPLETE_FRAME = 0x40;
const long SPY_STATUS_LOST_ARBITRATION = 0x80;

const long SPY_STATUS_UNDEFINED_ERROR = 0x100;
const long SPY_STATUS_CAN_BUS_OFF = 0x200;
const long SPY_STATUS_CAN_ERROR_WARNING = 0x400;
const long SPY_STATUS_BUS_SHORTED_PLUS = 0x800;

const long SPY_STATUS_BUS_SHORTED_GND = 0x1000;
const long SPY_STATUS_CHECKSUM_ERROR = 0x2000;
const long SPY_STATUS_BAD_MESSAGE_BIT_TIME_ERROR = 0x4000;
const long SPY_STATUS_IFR_DATA = 0x8000;

const long SPY_STATUS_HARDWARE_COMM_ERROR = 0x10000;
const long SPY_STATUS_EXPECTED_LEN_ERROR = 0x20000;
const long SPY_STATUS_INCOMING_NO_MATCH = 0x40000;
const long SPY_STATUS_BREAK = 0x80000;

const long SPY_STATUS_AVSI_REC_OVERFLOW = 0x100000;
const long SPY_STATUS_TEST_TRIGGER = 0x200000;
const long SPY_STATUS_AUDIO_COMMENT = 0x400000;
const long SPY_STATUS_GPS_DATA = 0x800000;

const long SPY_STATUS_ANALOG_DIGITAL_INPUT = 0x1000000;
const long SPY_STATUS_TEXT_COMMENT = 0x2000000;
const long SPY_STATUS_NETWORK_MESSAGE_TYPE = 0x4000000;
const long SPY_STATUS_VSI_TX_UNDERRUN = 0x8000000;

const long SPY_STATUS_VSI_IFR_CRC_Bit = 0x10000000;
const long SPY_STATUS_INIT_MESSAGE = 0x20000000;
const long SPY_STATUS_HIGH_SPEED_MESSAGE = 0x40000000;


// The second status bitfield
const long SPY_STATUS2_HAS_VALUE = 1;
const long SPY_STATUS2_VALUE_IS_BOOLEAN = 2;
const long SPY_STATUS2_HIGH_VOLTAGE = 4;
const long SPY_STATUS2_LONG_MESSAGE = 8;

Remarks

The tables below describe the bitfields.

Table 1 - StatusBitfield Elements

Table 2 - StatusBitfield2 Elements

Example

C/C++ Example

Determining if we there's an error in the message (This is indicated by SPY_STATUS_GLOBAL_ERR bit set)

if (mMsg.StatusBitField & SPY_STATUS_GLOBAL_ERR)
{
    // This message has an error in it
}

Last Updated : Monday, July 13, 2009