Studio:Scl msg bind

The scl_msg_bind pragma

The scl_msg_bind pragma directs the SCL compiler to bind one or more one-way response messages to a one-way command message. This pragma has no direct effect on the messages; rather, it allows the message display user interface to associate the cmd-SMID and rsp-SMID as if they were a single two-way message.

Syntax

#pragma scl_msg_bind(cmd-SMID, rsp-SMID1, rsp-SMID2..n)

Parameters	Type	Description
cmd-SMID	Integer	STRIDE message ID; ID of the one-way command.
rsp-SMID1	Integer	Message ID of the one-way response to bind to the one-way command. The SMID attributes determine the behavior.
rsp-SMID2..n	Integer	Optional additional response messages to bind to the one-way command.

Notes

• More than one response can be bound to a specific command. Conversely, a specific response can be bound to more than one command.
• The cmd-SMID must have the one-way command attribute set.
• The rsp-SMID must have the one-way response attribute set.
• The cmd-SMID and rsp-SMID must have already been defined as one-way messages in prior scl_msg() definitions.
• The cmd-SMID and rsp-SMID cannot be the same.

Examples

/* SUID = 1, Message Type = One-way Command, Send Type = By Value */
#define OneWayCmd 1 | srMT_ONEc | srST_CMD_VAL
 
/* SUID = 2, Message Type = One-way Respone, Send Type = No Value */
#define OneWayRsp 2 | srMT_ONEr | srST_RSP_VAL
 
/* Structure defining the command payload */
typedef struct {
  int f1;
  char f2;
}CmdPayload_t;
 
/* Structure defining the response payload */
typedef struct {
  short f1;
  float f2;
}RspPayload_t;
 
/* Use the scl_msg pragma to associate the SMIDS with their respective payloads */
#pragma scl_msg( OneWayCmd, CmdPayload_t )
#pragma scl_msg( OneWayRsp, RspPayload_t )
 
/* Use the scl_msg_bind pragma to bind the one-way command and response messages */
#pragma scl_msg_bind( OneWayCmd, OneWayRsp )

See Also

• The scl_msg pragma.
• The SCL Structure page for more information on the SMID format.