ex1.c

DSP RTOS源代码

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*
*                        (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL
*                                           All Rights Reserved
*
*                                   Test codes for TMS320C5402
*
* File : EX1.C
* By   : Zhang Zhenhua
*********************************************************************************************************
*/
#include "includes.h" 
#include <stdio.h>

#define  N_TASKS                        2       /* Number of identical tasks                          */

OS_EVENT        * AckMbox;                           
OS_EVENT        * TxMbox;

OS_STK           TaskStk[N_TASKS][OS_DEF_TASK_STK_SIZE];     /* Tasks stacks                                  */
OS_STK           TaskStartStk[OS_DEF_TASK_STK_SIZE];
                         
void   TaskStart(void *data);
void   Task1(void *data);                              /* Function prototypes of tasks                  */
void   Task2(void *data);							   /* Function prototypes of Startup task           */

short counter1, counter2, counter3;


main()
{  
	
	
	counter1= counter2 = counter3 = 0; 

	Init_Timer();
	
	OSInit();
	
		                    
	OSTaskCreate(TaskStart, (void *)&counter1, (void *)&TaskStartStk[OS_DEF_TASK_STK_SIZE - 1], 4);

	OSStart();
}

void TaskStart(void *data)
{   
    UBYTE x;
    UBYTE y;
    UBYTE err;
    
	
	Start_Timer();
	OSTaskCreate(Task1, (void *)&counter2, (void *)&TaskStk[0][OS_DEF_TASK_STK_SIZE - 1], 5);
	OSTaskCreate(Task2, (void *)&counter3, (void *)&TaskStk[1][OS_DEF_TASK_STK_SIZE - 1], 6);
	
	AckMbox = OSMboxCreate((void*)0);                     /* Create 2 message mailboxes               */
    TxMbox  = OSMboxCreate((void*)0);
	     
	for (;;) {
    	(*(int *)data)++;
    	err++;
        OSTimeDly(100);                            /* Delay 1 clock tick                                 */
    }
}
		

void Task1 (void *data)
{
    UBYTE err; 
    char txmsg;
    
    txmsg = 'A';
    for (;;) {
    	while (txmsg <= 'Z')
    	{
    		puts("Post ");putchar(txmsg);putchar('\n');
    		OSMboxPost(TxMbox, (void *)&txmsg);
    		OSMboxPend(AckMbox, 0, &err);
    		txmsg++;
    	}
    	txmsg = 'A';
    	(*(int *)data)++; 
    	err++;
    }
} 

void Task2(void *data)
{
	char *rxmsg;
    UBYTE err;
    
    for (;;) {
    	rxmsg = (char *)OSMboxPend(TxMbox, 0, &err);
		puts("Received ");putchar(*rxmsg);putchar('\n');
    	OSTimeDly(5);
    	OSMboxPost(AckMbox, (void *)1);
    	(*(int *)data)++;
    }
}