Command:              CMD_CARD_TX
Destination:          SD_CARD
Destination Channel:  Channel ID

Description

Clients use this command to transmit a message over the specified channel.

Command data format

The message to be transmitted is arranged as follows:

Message Frame Format

GC frame header Frame Type = FT_CMD	Message Frame (n bytes)
	data header	Network data + padding

data header

Header Length	1 byte unsigned char	Number used to represent the message header.
Header Bits	1 byte unsigned char	Number of bits that make up the header. (These are the least significant bits of the header bytes.)
Data Length	2 bytes unsigned short	The number of extra data bytes associated with this message.
Extra Length	1 byte unsigned char	Additional information (e.g. TX, RX, etc.) about the message; see Appendix B.
Mode	1 byte	Message mode (tx, rx, etc)
Priority	1 byte Unsigned char	Not currently used.
Error Status	1 byte unsigned char	Reports of error conditions
Time Stamp	4 bytes unsigned long	Message timestamp, in 10uS units
Context	1 byte	User-specified unique value that is guaranteed to remain unchanged during the life of the message.
Reserved Char	1 byte	Reserved.
Reserved Short	2 bytes	Reserved.

Response data format

(None)

Response return codes

RESP_OK	Execution of the command was successful
RESP_INVAL_CHAN	The specified channel is invalid.
RESP_UNSUPPORTED	This command is not supported on the specified channel.
RESP_INVAL_MSG	The specified message is not a legal message for this protocol.
RESP_INVAL_LEN	The specified data size is not legal.
RESP_TX_FAIL	A transmit attempt failed.
RESP_UNREG	The specified source channel is not registered with the server.
RESP_UNKNOWN_ERR	An unknown error has occurred.
RESP_BUF_FULL	The transmit buffer is full.