cxmsbxev.c

来自「CMEX source code RTOS for atmel atmega12」· C语言 代码 · 共 51 行

/*********************************************************

Copyright (c) CMX Company. 1999. All rights reserved

*********************************************************/
/* version 5.30 */

#define CMXMODULE 1

#include <cxfuncs.h>	/* get cmx include header file */
#include <cxextern.h>	/* get cmx include header file */

#ifdef CMXTRACKER
#include <cmxtrack.h>	/* get cmx include header file */
#endif

/************************************************************
 the following function sets up a mailbox to automatically
 set an event of a particular task, when and if this mailbox
 has messages in it.
*************************************************************/
byte K_Mbox_Event_Set(byte mailbox,byte taskid,word16 event_num)
{
	MAILBOX *mail_ptr;

	if (mailbox >= MAX_MAILBOXES) /* see if mailbox number OK. */
		{
#ifdef CMXTRACKER
		if (CMXTRACKER_ON)
			{
			cmxtracker_in2(CXMSBXEV_K_ERROR,mailbox);
			}
#endif
		return(K_ERROR);	/* NO, send error status. */
		}
	K_I_Disable_Sched();	/* set task block. */

	mail_ptr = &mail_box[mailbox];	/* get CMX mailbox handler */
	mail_ptr->task_num = taskid;	/* load task_num with task slot number. */
	mail_ptr->event_num = event_num;	/* what event bit will be set. */
#ifdef CMXTRACKER
		if (CMXTRACKER_ON)
			{
			cmxtracker_in2(CXMSBXEV_K_OK,mailbox);
			}
#endif
	K_I_Func_Return();	/* release task block. */
	return(K_OK);	/* return good status. */
}