: Hardware Information : Dual NBUS card

Hardware Information: Dual Visteon NBUS card

External D-15 connector pinout

Pin #	Channel	Assignment
01	1	TX (master/slave mode) / RX slave (monitor mode)
02	1	RX (master/slave mode) / RX master (monitor mode)
03	1	Slave 0 Request
04	1	Slave 1 Request
05	1	Slave Mux Select
06	2	TX (master/slave mode) / RX slave (monitor mode)
07	2	RX (master/slave mode) / RX master (monitor mode)
08	2	Slave 0 Request
09	2	Slave 1 Request
10	2	Slave Mux Select
11	Both	Vin+
12	Both	12 vdc out
13	Both	8 vdc out
14	Both	ground
15	Both	VIN-

BUS termination requirements

(None.)

Event definitions

The following values may be transmitted as FT_EVENT type GCProtocol frames.
The event value will be in the event field of such a frame.
Note: Please see the include file dev_nbus.h for numeric values of the following symbols.

Event name Event meaning

Monitor mode

GNBUSRXTEXT Started receiving a text message

GNBUSRXBINARY Started receiving a binary message

GNBUSRXMASTER Received a message from the master node

GNBUSRXSLAVE0 Received a message from the first slave node

GNBUSRXSLAVE1 Received a message from the second slave node

GNBUSTIMERA Timer A has expired

GNBUSTIMERB Timer B has expired

GNBUSTIMERF Timer F has expired

GNBUSSL0REQHI Slave 0 request line high

GNBUSSL0REQLO Slave 0 request line low

GNBUSSL1REQHI Slave 1 request line high

GNBUSSL1REQLO Slave 1 request line low

GNBUSSLSELHI Slave select high

GNBUSSLSELLO Slave select low

Master and Slave modes

GNBUSXMITABORT Transmit of message aborted

GNBUSXMITEOT Transmit of message received EOT

GNBUSXMITMSGLMT Transmit of message reached retry limit

GNBUSXMITREQLMT Transmit of message reached request Retry Limit

GNBUSXMITNAKLMT Transmit of message reached NAK retry limit

GNBUSXMITTIMER Timer E Timeout

GNBUSRCVINVALID Received an invalid message

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

Card-specific IOCTL definitions

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

(effective after next INIT ioctl.)

IOCTL name Function Data field length/purpose

GNBUSGETMODE Get the current mode of operation. One byte.
The current mode of operation.
NBUS_NOTHING: Mode has not been assigned.
NBUS_MONITOR: Monitor mode.
NBUS_MASTER: Master mode.
NBUS_SLAVE: Slave mode.

GNBUSSETMODE Set the mode of operation. One byte.
The new mode of operation
NBUS_MONITOR: Monitor mode.
NBUS_MASTER: Master mode.
NBUS_SLAVE: Slave mode.

GNBUSGETCOMMANDS Get the commands from
the verification table. Variable number of bytes.
bytes 1 & 2: The number of commands present.
bytes 3 ... n+2: Command byte.

GNBUSADDCOMMANDS Add one or more commands to
the verification table Variable number of bytes.
(effective after next INIT ioctl.)
bytes 1 & 2: The number of commands to add.
bytes 3 ... n+2: Command byte.

GNBUSDELCOMMANDS Delete one or more commands from
the verification table. Variable number of bytes.
(effective after next INIT ioctl.)
bytes 1 & 2: The number of commands to delete.
bytes 3 ... n+2: Command byte.

GNBUSCLRCOMMANDS Delete all of the commands from
the verification table. none
(effective after next INIT ioctl.)

GNBUSGETVERMODE Get the command verification mode. One byte.
The current verification mode.
NBUS_NONE
NBUS_COMMAND

GNBUSSETVERMODE Set the command verification mode. One byte.
(effective after next INIT ioctl.)
The new verification mode.
NBUS_NONE
NBUS_COMMAND

Notes:

Up to 256 commands may be added to the driver's verification table using one or more GNBUSADDCOMMANDS IOCTL calls.
If no entries are present in the driver's table, command verification is bypassed. (All commands are valid.)
The number of commands in the GNBUSGETCOMMANDS, GNBUSADDCOMMANDS and GNBUSDELCOMMANDS IOCTLs is in host byte order for an x86 processor (little endian).

The first INIT ioctl command sent to a channel after changing the mode (Monitor, Master, Slave), takes on the order of 500 ms to return the response.
Setting the verification mode to NBUS_NONE does not remove any commands from the verification table. When set to NBUS_NONE, no command verifcation is performed. (All commands are valid.)
Setting the verification mode to NBUS_COMMAND, enables command verification using the commands currently in the command verification table.

FT_DATA frame stat field definitions:

The following bits may be set in the stat field of FT_DATA messages written to the card.

GNBUSSTAT_TEXT is set to 1 if the message to be sent is a text message.

GNBUSSTAT_TEXT is set to 0 if the message to be sent is a binary message.

GNBUSSTAT_TO_SLAVE1 is set to 1 if the message sent by the master node is to be sent to the second slave.

GNBUSSTAT_TO_SLAVE1 is set to 0 if the message sent by the master node is to be sent to the first slave.

The following bits may be set in the stat field of FT_DATA messages read from the card.

GNBUSSTAT_TEXT is set to 1 if the message read from the card is a text message.

GNBUSSTAT_TEXT is set to 0 if the message read from the card is a binary message.

GNBUSSTAT_FR_SLAVE1 is set to 1 (And GNBUSSTAT_FR_MASTER is zero.) if the message read from the card is from the second slave.

GNBUSSTAT_FR_SLAVE1 is set to 0 (And GNBUSSTAT_FR_MASTER is zero.) if the message read from the card is from the first slave.

GNBUSSTAT_FR_MASTER is set to 1 if the message read from the card is from the master.

GNBUSSTAT_FR_MASTER is set to 0 if the message read from the card is from one of the slaves.

GNBUSSTAT_TO_SLAVE1 is set to 1 (And GNBUSSTAT_TO_MASTER is zero.) if the message read from the card is to the second slave.

GNBUSSTAT_TO_SLAVE1 is set to 0 (And GNBUSSTAT_TO_MASTER is zero.) if the message read from the card is to the first slave.

GNBUSSTAT_TO_MASTER is set to 1 if the message read from the card is to the master.

GNBUSSTAT_TO_MASTER is set to 0 if the message read from the card is to one of the slaves.

How the Header, Data and Extra Data fields of the FT_DATA frame are used in received messages:

Monitor mode

Header: Contains nothing.
Data: Contains every byte received including all control and escape bytes. Each received byte is represented by four bytes.
The first of the four bytes is the received byte.
The second byte is the status byte from the UART when the received byte was read from the UART.
The third and fourth bytes contain a timestamp. This timestamp has the same units (tens of microsceonds) as the timestamp in the FT_DATA header. The difference between the first and last byte's timestamps can be subtracted from the timestamp to compute the timestamp of the first byte of a message.
Extra Data: Contains the message without any control bytes or the checksum.

Master and Slave modes

Header: Contains nothing.
Data: Contains nothing.
Extra Data: Contains the message without any control bytes or the checksum.

How the Header, Data and Extra Data fields of the FT_DATA frame are used in transmitted messages:

Monitor mode

Data messages cannot be sent while in the Monitor mode.

Master and Slave modes

Header: Contains nothing.
Data: Contains the message without any control bytes or the checksum. The driver computes the checksum and adds it, and the control byte for it.
Extra Data: Contains nothing.

Event name	Event meaning
*Monitor mode*
GNBUSRXTEXT	Started receiving a text message
GNBUSRXBINARY	Started receiving a binary message
GNBUSRXMASTER	Received a message from the master node
GNBUSRXSLAVE0	Received a message from the first slave node
GNBUSRXSLAVE1	Received a message from the second slave node
GNBUSTIMERA	Timer A has expired
GNBUSTIMERB	Timer B has expired
GNBUSTIMERF	Timer F has expired
GNBUSSL0REQHI	Slave 0 request line high
GNBUSSL0REQLO	Slave 0 request line low
GNBUSSL1REQHI	Slave 1 request line high
GNBUSSL1REQLO	Slave 1 request line low
GNBUSSLSELHI	Slave select high
GNBUSSLSELLO	Slave select low

*Master and Slave modes*
GNBUSXMITABORT	Transmit of message aborted
GNBUSXMITEOT	Transmit of message received EOT
GNBUSXMITMSGLMT	Transmit of message reached retry limit
GNBUSXMITREQLMT	Transmit of message reached request Retry Limit
GNBUSXMITNAKLMT	Transmit of message reached NAK retry limit
GNBUSXMITTIMER	Timer E Timeout
GNBUSRCVINVALID	Received an invalid message

IOCTL name	Function	Data field length/purpose
GNBUSGETMODE	Get the current mode of operation.	One byte. The current mode of operation. NBUS_NOTHING: Mode has not been assigned. NBUS_MONITOR: Monitor mode. NBUS_MASTER: Master mode. NBUS_SLAVE: Slave mode.
GNBUSSETMODE	Set the mode of operation.	One byte. The new mode of operation NBUS_MONITOR: Monitor mode. NBUS_MASTER: Master mode. NBUS_SLAVE: Slave mode.
GNBUSGETCOMMANDS	Get the commands from the verification table.	Variable number of bytes. bytes 1 & 2: The number of commands present. bytes 3 ... n+2: Command byte.
GNBUSADDCOMMANDS	Add one or more commands to the verification table	Variable number of bytes. (effective after next INIT ioctl.) bytes 1 & 2: The number of commands to add. bytes 3 ... n+2: Command byte.
GNBUSDELCOMMANDS	Delete one or more commands from the verification table.	Variable number of bytes. (effective after next INIT ioctl.) bytes 1 & 2: The number of commands to delete. bytes 3 ... n+2: Command byte.
GNBUSCLRCOMMANDS	Delete all of the commands from the verification table.	none (effective after next INIT ioctl.)
GNBUSGETVERMODE	Get the command verification mode.	One byte. The current verification mode. NBUS_NONE NBUS_COMMAND
GNBUSSETVERMODE	Set the command verification mode.	One byte. (effective after next INIT ioctl.) The new verification mode. NBUS_NONE NBUS_COMMAND