Hardware Information: DCX card

External D-9 connector pinout

BUS termination requirements

Event definitions

J1850 Events
Note: Please see the include file dev_dlc.h for numeric values of the following symbols.

Event name	Event meaning
GDLCBREAK	Break received
GDLCCRCERR	CRC error detected
GBLICERR	J1850 chip experienced an error. See the HIP7010 datasheet.
GBLICFTU	J1850 chip has reset itself, normally due to a slow clock.

SCI Events
Note: Please see the include file dev_uart.h for numeric values of the following symbols.

Event name	Event meaning
GUARTRXOVER	Receive buffer overrun.
GUARTPARITY	Parity error.
GUARTFRAME	Frame Error.
GUARTBREAK	Break on bus.
GUARTGTIME	Error with 's timestamp.
GSCIESCERR	SCI escape sequence on bus.
GUARTSTAT_ERROR	Error receiving message.

Please also see generic events for non card-specific events.

Card-specific IOCTL definitions

IOCTL name	Function	Data field length/purpose
GDLCGETFOURX	Get J1850 4x-speed flag	1 data byte returned: current 4x-speed flag
GDLCSETFOURX	Set J1850 4x-speed flag	1 data byte: new 4x-speed flag Set values valid only after net INIT IOCTL.
GDLCGETHDRMODE	Get header mode	1 data byte: current header mode Controls number of header bytes. Possible modes: zero, one, or three header bytes; one byte OBD mode; auto mode. Default: one byte OBD mode.
GDLCSETHDRMODE	Set header mode	1 data byte: new header mode
GDLCGETRXMODE	Get Receive IFR Mode	1 data byte
GDLCSETRXMODE	Enable/disable IFR receive check delay	1 data byte Possible modes: GDLCRXDEFAULT (currently only one mode)
GVPWADDIFR	Add IFR response.**	IFR response is used to send a response to an IFR request. It consists of the IFR data to send, criteria the received message data should meet, whether the normalization bit should be set, and how many bytes of data the message being replied to will have. Length Description 2 bytes IFR filter length 2 bytes IFR length 1 byte Normalization bit (boolean, 0 or 1) 1 byte Reserved 2 bytes Message Length, number of bytes to receive before sending IFR data IFR filter length IFR filter to match incoming message to send an IFR IFR filter length IFR filter mask, 0 = don't care, 1 = care. IFR length IFR data to send in response to message matching pattern and mask **Note: All fields which are 2 bytes in length are in host byte order.
GVPWCLRIFRS	Removes all IFR responses.	None.

** Note: Currenly only one IFR response is allowed at a time. Subsequent GVPWADDIFR calls will overwrite the last response loaded.

SCI IOCTLS
These values are used with the CMD_CARD_IOCTL command.
Please see the include file dev_uart.h for numeric values of IOCTLS and data field bit assignments.

IOCTL name	Function	Data field length/purpose
GUARTGETBAUDBASE	Get baud base frequency	4 bytes
GUARTGETDIV	Get divisor	4 bytes: Divisor used in network baud base.
GUARTSETDIV	Set divisor	4 bytes: Divisor used to set network baud base. Set values valid only after net INIT IOCTL.
GUARTGETRXMODE	Get RX mode	1 byte: Current RX Mode (see definition below)
GUARTSETRXMODE	Set RX mode	1 byte. Mode Function GUARTMODECHRYSLERMSCI Module uses 0x7e values to delimit received bytes into messages. It also translates '0x7d 0x5e' to '0x7e' and '0x7d 0x5d' to '0x7d'. 'hdrlen' defaults to 1 and 'hdrbits' defaults to 8 in this mode. GUARTMODETIME Module uses time to delimit received messages and performs no translation on data between user and network. 'hdrlen' and 'hdrbits' default to zero in this mode. Set values valid only after net INIT IOCTL
GUARTGETTXMODE	Get TX mode	1 byte: Current TX mode (see definition below)
GUARTSETTXMODE	Set TX mode	1 byte. Mode Function GUARTMODECHRYSLERMSCI Module will automatically mark the beginning and end of data frames with '0x7e'. Module also translates '0x7e' to '0x7d 0x5d' and '0x7e' to '0x7e 0x5e'. GUARTMODETIME Modules uses time to delimit messages.
GUARTGETRXINTERMSG	Get message delimitor time	4 bytes. Time, in units of 10 microseconds, used when delimiting messages in GUARTMODETIME RX mode.
GUARTSETRXINTERMSG	Set message delimiter time	4 bytes. Time, in units of 10 microseconds, used when delimiting messages in GUARTMODETIME RX mode. If set to zero, module will pass each received byte to the user in an individual data frame.
GUARTGETRXFIFOSIZE	Get RX FIFO size	2 bytes.
GUARTGETTXFIFOSIZE	Set RX FIFO size	2 bytes.
GUARTGETRXFIFOTRIG	Get RX FIFO trigger level	2 bytes.
GUARTSETRXFIFOTRIG	Set RX FIFO trigger level	2 bytes. Currently only 1, 4, 8 and 14 are supported.