Packet Format

Note: All multi-byte data field are big-endian

Message Packet Format Definition

UNDEFINED (0x00)

Undefined message, do not use

GENERAL_BOARD_STATUS (0x01)

Board status broadcast

Byte 0-1

Byte 2-5

2 byte timestamp

BOARD_ERROR_BITFIELD
BOARD_ERROR_BITFIELD: Board error code bitfield, see board_error_bitfield

RESET_CMD (0x02)

Command to reset boards

Byte 0-1

Byte 2

Byte 3

2 byte timestamp

TARGET_BOARD_TYPE_ID

TARGET_BOARD_INST_ID
TARGET_BOARD_TYPE_ID: Board Type ID of board to reset, set to 0 to reset all boards on bus
TARGET_BOARD_INST_ID: Board Inst ID of board to reset, set to 0 to reset all board of specific type

DEBUG_RAW (0x03)

6-bytes of raw data

Byte 0-1

Byte 2-7

2 byte timestamp

RAW_DATA
RAW_DATA: Raw data, 6 bytes

CONFIG_SET (0x04)

Set board specific configuration

Byte 0-1

Byte 2

Byte 3

Byte 4-5

Byte 6-7

2 byte timestamp

TARGET_BOARD_TYPE_ID

TARGET_BOARD_INST_ID

CONFIG_ID

CONFIG_VALUE
TARGET_BOARD_TYPE_ID: Board Type ID of target board, cannot be zero
TARGET_BOARD_INST_ID: Board Inst ID of target board, set to 0 to set all board of specific type
CONFIG_ID: Configuration ID, Board Specific
CONFIG_VALUE: Configuration Value, Board and Config ID specific

CONFIG_STATUS (0x05)

Broadcast board specific configuration, for verify CONFIG_SET success

Byte 0-1

Byte 2-3

Byte 4-5

2 byte timestamp

CONFIG_ID

CONFIG_VALUE
CONFIG_ID: Configuration ID, Board Specific
CONFIG_VALUE: Configuration Value, Board and Config ID specific

ACTUATOR_CMD (0x06)

Set actuator commanded state

Metadata

Byte 0-1

Byte 2

ACTUATOR_ID

2 byte timestamp

ACTUATOR_CMD_STATE
ACTUATOR_ID: Acturator ID, see actuator_id
ACTUATOR_CMD_STATE: Actuator Commanded State, see actuator_state

ACTUATOR_STATUS (0x07)

Actuator Status Message

Metadata

Byte 0-1

Byte 2

Byte 3

ACTUATOR_ID

2 byte timestamp

ACTUATOR_CMD_STATE

ACTUATOR_CURR_STATE
ACTUATOR_ID: Acturator ID, see actuator_id
ACTUATOR_CMD_STATE: Actuator Commanded State, see actuator_state
ACTUATOR_CURR_STATE: Actuator Current State, see actuator_state

ALT_ARM_CMD (0x08)

Command to arm altimeter

Metadata

Byte 0-1

Byte 2

ALT_ID

2 byte timestamp

ALT_ARM_STATE
ALT_ID: Altimeter ID, see altimeter_id
ALT_ARM_STATE: Altimeter set arm state, see alt_arm_state

ALT_ARM_STATUS (0x09)

Altimeter Arm Status

Metadata

Byte 0-1

Byte 2

Byte 3-4

Byte 5-6

ALT_ID

2 byte timestamp

ALT_ARM_STATE

DROGUE_V

MAIN_V
ALT_ID: Altimeter ID, see altimeter_id
ALT_ARM_STATE: Altimeter current arm state, see alt_arm_state
DROGUE_V: Drogue Pyro Voltage
MAIN_V: Main Pyro Voltage

SENSOR_ANALOG16 (0x0A)

16-bits analog sensor

Metadata

Byte 0-1

Byte 2-3

SENSOR_ID

2 byte timestamp

VALUE
SENSOR_ID: Sensor ID, see analog_sensor_id
VALUE: Analog sensor value

SENSOR_ANALOG32 (0x0B)

32-bits analog sensor

Metadata

Byte 0-1

Byte 2-5

SENSOR_ID

2 byte timestamp

VALUE
SENSOR_ID: Sensor ID, see analog_sensor_id
VALUE: Analog sensor value

SENSOR_2D_ANALOG24 (0x0C)

2-Dimensional 24-bit analog sensor value message

Metadata

Byte 0-1

Byte 2-4

Byte 5-7

SENSOR_ID

2 byte timestamp

VALUE_X

VALUE_Y
SENSOR_ID: 2 Dimensional sensor ID, see dem_2d_sensor_id
VALUE_X: Analog sensor value X
VALUE_Y: Analog sensor value Y

SENSOR_3D_ANALOG16 (0x0D)

3-Dimensional 16-bit analog sensor value message

Metadata

Byte 0-1

Byte 2-3

Byte 4-5

Byte 6-7

SENSOR_ID

2 byte timestamp

VALUE_X

VALUE_Y

VALUE_Z
SENSOR_ID: 3 Dimensional sensor ID, see dem_3d_sensor_id
VALUE_X: Analog sensor value X
VALUE_Y: Analog sensor value Y
VALUE_Z: Analog sensor value Z

GPS_TIMESTAMP (0x0E)

Byte 0-1

Byte 2

Byte 3

Byte 4

Byte 5

2 byte timestamp

UTC_HOURS

UTC_MINUTES

UTC_SECONDS

UTC_DSECONDS
UTC_HOURS: Hour
UTC_MINUTES: Minutes
UTC_SECONDS: Seconds
UTC_DSECONDS: Decisecond

GPS_LATITUDE (0x0F)

Byte 0-1

Byte 2

Byte 3

Byte 4-5

Byte 6

2 byte timestamp

DEGREES

MINUTES

DMINUTES_H

DIR_NS
DEGREES: Degrees
MINUTES: Minutes
DMINUTES_H: No description
DIR_NS: North/South

GPS_LONGITUDE (0x10)

Byte 0-1

Byte 2

Byte 3

Byte 4-5

Byte 6

2 byte timestamp

DEGREES

MINUTES

DMINUTES_H

DIR_EW
DEGREES: Degrees
MINUTES: Minutes
DMINUTES_H: No description
DIR_EW: East/West

GPS_ALTITUDE (0x11)

Byte 0-1

Byte 2-5

Byte 6

2 byte timestamp

ALT

DALT
ALT: Altitude in ft
DALT: No description

GPS_INFO (0x12)

Byte 0-1

Byte 2

Byte 3

2 byte timestamp

NUM_SAT

QUALITY
NUM_SAT: Number of satellite
QUALITY: Quality

STREAM_STATUS (0x13)

Byte 0-1

Byte 2-4

Byte 5-7

2 byte timestamp

TOTAL_SIZE

TX_SIZE
TOTAL_SIZE: Total transfer size in bytes
TX_SIZE: Transfered size in bytes

STREAM_DATA (0x14)

Metadata

Byte 0-1

Byte 2-7

SEQ_ID

2 byte timestamp

DATA
SEQ_ID: Sequence ID
DATA: Data payload

STREAM_RETRY (0x15)

Metadata

Byte 0-1

SEQ_ID

2 byte timestamp
SEQ_ID: Sequence ID of data packet need to be resend

TELEMETRY_INFO (0x16)

Metadata

Byte 0-1

Byte 2

Byte 3

CHANNEL_ID

2 byte timestamp

LQI

RSSI
CHANNEL_ID: Channel ID(Use LTT board instance ID)
LQI: Link Quality Indicator
RSSI: Received Signal Strength Indicator(2s complement signed)

TELEMETRY_STATE_SWITCH (0x17)

Metadata

Byte 0-1

CHANNEL_ID

2 byte timestamp
CHANNEL_ID: Channel ID(Use LTT board instance ID)

CANARD_FIRMWARE_ERROR (0x18)

Metadata

Byte 0-1

Byte 2-5

Byte 6

MODULE_ID

2 byte timestamp

ERROR_CODE

SEVERITY
MODULE_ID: Module ID, see canards_module_id
ERROR_CODE: Error Code Bitfield, see canards_module_error_bitfield
SEVERITY: Severity, see canards_health_severity

LEDS_ON (0x19)

LEDS_OFF (0x20)

Enums Definition

actuator_id

Actuator ID for Actuator Command and Status Messages

actuator_id Enum Values

Enum Name

Description

ID

OX_INJECTOR_VALVE

Oxidizer Injector Valve, for hall-effect sensor state feedback and Canard activation

0x00

FUEL_INJECTOR_VALVE

Oxidizer Injector Valve, for hall-effect sensor state feedback

0x01

IGNITION

Ignition Puck

0x02

ROCKET_UPPER_CHARGE_ENABLE

Rocket Upper Section Ground-side Charging Enable

0x03

ROCKET_INJECTOR_CHARGE_ENABLE

Rocket Injector Section Ground-side Charging Enable

0x04

5V_RAIL_ROCKET

No Description

0x05

12V_RAIL_ROCKET

No Description

0x06

TELEMETRY

No Description

0x07

CAMERA_SIDE_LOOKING_POWER

No Description

0x08

CAMERA_DOWN_LOOKING_POWER

No Description

0x09

CAMERA_RECOVERY_POWER

No Description

0x0A

CAMERA_SIDE_LOOKING_RECORD

No Description

0x0B

CAMERA_DOWN_LOOKING_RECORD

No Description

0x0C

CAMERA_RECOVERY_RECORD

No Description

0x0D

CANARD_PAD_FILTER

Switch Canard to Pad Filter when commanded ACT_STATE_ON

0x0E

CANARD_5V_OUTPUT

Enable Canard Board’s 5V output to payload

0x0F

CANARD_LIPO_ON

Enable Canard board draw power from LiPo

0x10

SRAD_ALT_ESTIMATOR_INIT

Actuator command to start SRAD Altimeter state estimation

0x11

SRAD_ALT_GPS_RESET

Actuator command to reset GPS Receiver on SRAD Altimeter

0x12

CAMERA_CAPTURE

No Description

0x13

PAYLOAD_LOGGING_ENABLE

Payload Sensor Board Logging Enable Control

0x14

INJECTOR_BOARD_ACTUATOR_1

Injector board actuator channel 1

0x15

INJECTOR_BOARD_ACTUATOR_2

Injector board actuator channel 2

0x16

RLCS_RELAY_POWER

RLCS Relay Board Power Relay

0x17

RLCS_RELAY_SELECT

RLCS Relay Board Select Relay(Limit switch state feedback)

0x18

PAYLOAD_ACCEL_ARM

Payload accelerometer arming

0x19

PAYLOAD_PZT_ARM

Payload PZT phase biasing arming

0x1A

LOGGER_FLASH_ERASE

Erase logger board flash

0x1B

CANARD_FLASH_ERASE

Erase canard board flash

0x1C

CANARD_MOTOR_CALIBRATION

Start canard motor calibration routine

0x1D

LOGGER_SD_CLEAR

Clear logger board SD card

0x1E

CANARD_SD_CLEAR

Clear canard board SD card

0x1F

PAYLOAD_SD_CLEAR

Clear payload board SD card

0x20

actuator_state

Actuator State

actuator_state Enum Values

Enum Name

Description

ID

ON

Actuator is in ON state, or Open

0x00

OFF

Actuator is in OFF state, or Close

0x01

UNK

Unknown state, for example when ball valve is turning

0x02

ILLEGAL

Illegal state, for example when limit switch of both state being triggered

0x03

altimeter_id

Altimeter ID for uniquely indentify each altimeter

altimeter_id Enum Values

Enum Name

Description

ID

RAVEN

Raven4 Altimeter

0x00

STRATOLOGGER

StratoLoggerCF

0x01

SRAD

SRAD Altimeter

0x02

alt_arm_state

Altimiter Arm State

alt_arm_state Enum Values

Enum Name

Description

ID

DISARMED

Disarmed

0x00

ARMED

Armed

0x01

analog_sensor_id

Sensor ID for Sensor Messages

analog_sensor_id Enum Values

Enum Name

Description

ID

5V_VOLT

Voltage of 5V rail in mV

0x00

5V_CURR

Current of 5V rail in mA

0x01

12V_VOLT

Voltage of 12V rail in mV

0x02

12V_CURR

Current of 12V rail in mA

0x03

CHARGE_VOLT

LiPo charging voltage in mV

0x04

CHARGE_CURR

LiPo charging current in mA

0x05

BATT_VOLT

Battery Voltage in mV

0x06

ALTERNATE_BATT_VOLT

Secondary Battery Voltage in mV

0x07

BATT_CURR

Battery Current in mA

0x08

RADIO_CURR

Radio current in mA

0x09

GPS_CURR

GPS Receiver current in mA

0x0A

CAMERA_CURR

Camera current in mA

0x0B

LOCAL_RAIL_CURR

Local power rail (e.g. 3.3V) current in mA

0x0C

PT_CHANNEL_1

Pressure Transducer Channel 1

0x0D

PT_CHANNEL_2

Pressure Transducer Channel 2

0x0E

PT_CHANNEL_3

Pressure Transducer Channel 3

0x0F

PT_CHANNEL_4

Pressure Transducer Channel 4

0x10

PT_CHANNEL_5

Pressure Transducer Channel 5

0x11

PT_CHANNEL_6

Pressure Transducer Channel 6

0x12

PT_CHANNEL_7

Pressure Transducer Channel 7

0x13

PT_CHANNEL_8

Pressure Transducer Channel 8

0x14

PT_CHANNEL_9

Pressure Transducer Channel 9

0x15

PT_CHANNEL_10

Pressure Transducer Channel 10

0x16

HALL_CHANNEL_1

Hall-Effect Sensor Channel 1

0x17

HALL_CHANNEL_2

Hall-Effect Sensor Channel 2

0x18

HALL_CHANNEL_3

Hall-Effect Sensor Channel 3

0x19

RA_BATT_VOLT_1

No Description

0x1A

RA_BATT_VOLT_2

No Description

0x1B

RA_BATT_CURR_1

No Description

0x1C

RA_BATT_CURR_2

No Description

0x1D

RA_MAG_VOLT_1

No Description

0x1E

RA_MAG_VOLT_2

No Description

0x1F

FPS

Camera framerate

0x20

PAYLOAD_LIM_1

Payload Motor Board Limit Switch 1

0x21

PAYLOAD_LIM_2

Payload Motor Board Limit Switch 2

0x22

PAYLOAD_SERVO_DIRECTION

Payload Servo Direction

0x23

PAYLOAD_INFRARED

Payload Infrared Sensor Reading

0x24

INJECTOR_BOARD_TEMP_1

Injector board temperature channel 1

0x25

INJECTOR_BOARD_TEMP_2

Injector board temperature channel 2

0x26

INJECTOR_BOARD_TEMP_3

Injector board temperature channel 3

0x27

RLCS_RELAY_OUTPUT_VOLT_A

RLCS Relay Board channel A output voltage

0x28

RLCS_RELAY_OUTPUT_VOLT_B

RLCS Relay Board channel B output voltage

0x29

RLCS_RELAY_OUTPUT_CURR_A

RLCS Relay Board channel A output current

0x2A

RLCS_RELAY_OUTPUT_CURR_B

RLCS Relay Board channel B output current

0x2B

RLCS_RELAY_LIM_VOLT_A

RLCS Relay Board limit switch A voltage

0x2C

RLCS_RELAY_LIM_VOLT_B

RLCS Relay Board limit switch B voltage

0x2D

LOG_WRITTEN_SIZE

Number of bytes written to log file(reset to 0 when a new file is created)

0x2E

SD_LOG_FILE_NAME

SD Card log file name(the number part only)

0x2F

SD_USED

SD Card used space size, in MiB

0x30

SD_FREE

SD Card free space size, in MiB

0x31

FLASH_LOG_FILE_NAME

Flash log file name(the number part only)

0x32

FLASH_USED

Flash used space size, in MiB

0x33

FLASH_FREE

FLash free space size, in MiB

0x34

CANARD_CTRL_CMD_ANGLE

Canard Controller Commanded Angle

0x35

CANARD_CTRL_COEFF_LIFT

Canard Controller Coefficient of Lift

0x36

CANARD_MTI630_BARO_0

Canard MTI-630 Movella barometer reading 0

0x37

CANARD_MTI630_BARO_1

Canard MTI-630 Movella barometer reading 1

0x38

CANARD_MTI630_EST_ALT

Canard MTI-630 Movella Estimation altitude

0x39

CANARD_ADXRS649_GYRO

Canard ADXRS649 1-Axis Gyroscope angular velocity reading

0x3A

CANARD_SERVO_ANGLE

Canard Servo encoder angle reading

0x3B

CANARD_SERVO_CURR

Canard Servo current reading (in mA)

0x3C

CANARD_SERVO_TEMP

Canard Servo temperature reading (in Celcius)

0x3D

PAYLOAD_SENSOR_CURR_READING

Payload Sensor Current Reading

0x3E

ALTITUDE

Altitude in ft

0x3F

PAYLOAD_TEMP

Payload temperature

0x40

TC_0

TC 0

0x41

TC_1

TC 1

0x42

TC_2

TC 2

0x43

TC_3

TC 3

0x44

TC_4

TC 4

0x45

TC_5

TC 5

0x46

TC_6

TC 6

0x47

TC_7

TC 7

0x48

TC_8

TC 8

0x49

TC_9

TC 9

0x4A

TC_10

TC 10

0x4B

TC_11

TC 11

0x4C

TC_12

TC 12

0x4D

TC_13

TC 13

0x4E

TC_14

TC 14

0x4F

TC_15

TC 15

0x50

dem_2d_sensor_id

2 Dimensional Sensor ID

dem_2d_sensor_id Enum Values

Enum Name

Description

ID

CANARD_NAV_VEL_ANGLE_VEL_X

Canard Navigation Velocity(X) and Angular Velocity(Y) on X-axis

0x00

CANARD_NAV_VEL_ANGLE_VEL_Y

Canard Navigation Velocity(X) and Angular Velocity(Y) on Y-axis

0x01

CANARD_NAV_VEL_ANGLE_VEL_Z

Canard Navigation Velocity(X) and Angular Velocity(Y) on Z-axis

0x02

CANARD_MS5611_BARO_TEMP

Canard MS5611 Barometer Pressure(X) and Temperature(Y) reading

0x03

CANARD_MTI630_EST_ORI_QW_QX

Canard MTI-630 Movella Estimation Orientation (Euler) - QW and QX demension

0x04

CANARD_MTI630_EST_ORI_QY_QZ

Canard MTI-630 Movella Estimation Orientation (Euler) - QY and QZ demension

0x05

dem_3d_sensor_id

3 Dimensional Sensor ID

dem_3d_sensor_id Enum Values

Enum Name

Description

ID

CANARD_NAV_ORI_QX_QY_QZ

Canard Navigation Orientation QX, QY, QZ

0x00

CANARD_NAV_ORI_QW_ALT_VARNORM

Canard Navigation Orientation QW(X), Altitude(Y), Variance Norm(Z)

0x01

CANARD_LSM6DSV32X_ACCEL

Canard LSM6DSV32X 32G IMU Acceleration

0x02

CANARD_LSM6DSV32X_GYRO

Canard LSM6DSV32X 32G IMU Angular Velocity

0x03

CANARD_IIS2MDC_ACCEL

Canard IIS2MDC Compass Acceleration

0x04

CANARD_IIS2MDC_MAG

Canard IIS2MDC Magnetometer Reading

0x05

CANARD_MTI630_ACCEL

Canard MTI-630 Movella Acceleration

0x06

CANARD_MTI630_GYRO

Canard MTI-630 Movella Angular Velocity

0x07

CANARD_MTI630_MAG

Canard MTI-630 Movella Magnetometer Reading

0x08

RESERVED_0

Reserved 0

0x09

CANARD_MTI630_EST_ANGLE_VEL

Canard MTI-630 Movella Estimation Angular Velocity

0x0A

CANARD_MTI630_EST_VEL

Canard MTI-630 Movella Estimation Velocity

0x0B

CANARD_ADXL380_ACCEL

Canard ADXL380 Accelerometer Acceleration

0x0C

PAYLOAD_ACCEL_0

Payload Accelerometer 0

0x0D

PAYLOAD_ACCEL_1

Payload Accelerometer 1

0x0E

PAYLOAD_ACCEL_2

Payload Accelerometer 2

0x0F

PAYLOAD_ACCEL_3

Payload Accelerometer 3

0x10

PAYLOAD_ACCEL_4

Payload Accelerometer 4

0x11

PAYLOAD_ACCEL_5

Payload Accelerometer 5

0x12

PAYLOAD_ACCEL_6

Payload Accelerometer 6

0x13

PAYLOAD_ACCEL_7

Payload Accelerometer 7

0x14

canards_health_severity

Canards Health Severity

canards_health_severity Enum Values

Enum Name

Description

ID

HEALTH_OK

No issues

0x00

HEALTH_ERROR

Something is wrong, but can still fly safely

0x01

HEALTH_FATAL

Unrecoverable failure, unsafe flight

0x02

canards_module_id

Canards Module ID

canards_module_id Enum Values

Enum Name

Description

ID

ADC

No Description

0x00

ADXL380

No Description

0x01

ADXRS649

No Description

0x02

AK45

No Description

0x03

CAN_HANDLER

No Description

0x04

CONTROLLER

No Description

0x05

FLIGHT_PHASE

No Description

0x06

FSM

No Description

0x07

GPIO

No Description

0x08

I2C

No Description

0x09

IIS2MDC

No Description

0x0A

LOGGER

No Description

0x0B

LSM6DSV32X

No Description

0x0C

MOVELLA

No Description

0x0D

MS5611

No Description

0x0E

NAVIGATOR

No Description

0x0F

POWER_HANDLER

No Description

0x10

SD_CARD

No Description

0x11

SENSOR_HANDLER

No Description

0x12

TELEMETRY

No Description

0x13

TIMER

No Description

0x14

UART

No Description

0x15

Bitfields Definition

board_error_bitfield

Board error bitfield

board_error_bitfield Bitfield bits

Bitfield Name

Description

Offset

5V_OVER_CURR

No Description

0x00

5V_OVER_VOLT

No Description

0x01

5V_UNDER_VOLT

No Description

0x02

12V_OVER_CURR

No Description

0x03

12V_OVER_VOLT

No Description

0x04

12V_UNDER_VOLT

No Description

0x05

BATT_OVER_CURR

No Description

0x06

BATT_OVER_VOLT

No Description

0x07

BATT_UNDER_VOLT

No Description

0x08

MOTOR_OVER_CURR

No Description

0x09

IO_ERROR

No Description

0x0A

FS_ERROR

No Description

0x0B

WATCHDOG_TIMEOUT

No Description

0x0C

12V_EFUSE_FAULT

No Description

0x0D

5V_EFUSE_FAULT

No Description

0x0E

PT_OUT_OF_RANGE

No Description

0x0F

CANARD_MODULE_FAILURE

Canard firmware application module error

0x10

LOCAL_RAIL_OVER_CURR

Local power rail (e.g. 3.3V) over current

0x11

CHARGE_RAIL_OVER_VOLT

Charge power rail over voltage

0x12

CHARGE_RAIL_OVER_CURR

Charge power rail over current

0x13

canards_module_error_bitfield

Canards module_error bitfield

canards_module_error_bitfield Bitfield bits

Bitfield Name

Description

Offset

BAT1_FAULT

Battery 1 fault

0x00

BAT2_FAULT

Battery 2 fault

0x01

DEVICE_FAULT

External device fault

0x02

FILE_SYSTEM

SD card or flash storage mount, read, or write operation failed

0x03

HARDWARE_FAIL

Hardware interface failed (GPIO, pin config, etc.)

0x04

LOW_POWER_MODE_WITH_EXT_5V_ON

Low-power mode active while external 5V is on

0x05

COMM_FAILURE

Communication protocol failure (I2C, SPI, UART, etc.)

0x06

CRC_FAILED

Integrity check failed

0x07

NO_DATA

Expected sensor data packet or control command frame is missing

0x08

RX_FAILURE

Error occurred during data reception on physical bus transceivers

0x09

TIMEOUT

Operation or sensor handshake exceeded its allocated time window

0x0A

TX_FAILURE

Transmit failure

0x0B

ERROR_STATE

FSM transitioned into an unhandled, invalid, or corrupted state

0x0C

FAILED_CALIBRATION

Calibration routine executed but failed

0x0D

NOT_CALIBRATED

Calibration did not execute

0x0E

LOOP_TIMING

Control loop period did not meet timing requirements

0x0F

NOT_INIT

Module, task, or driver was accessed before being initialized

0x10

OS

RTOS feature (queue, semaphore) failed

0x11

CODEGEN

Error occurred inside codegen

0x12

UNEXPECTED_EVENT

Attempted to trigger an illegal state transition event

0x13

INVALID_PARAM

Function argument passed with value outside of legal range

0x14

MATH

Floating-point exception, division by zero, or NaN in control algorithms

0x15

OUT_OF_BOUNDS

Data is out of range

0x16

OVERFLOW

Buffer, queue, or integer arithmetic register overflow

0x17

INTERNAL

General software assertion or unhandled catch-all logical exception

0x18