vxworks 借助看门狗实现中断处理.txt

3个vxworks 程序

/*head file*/
#include "vxworks.h"
#include "logLib.h"
#include "taskLib.h"
#include "wdLib.h"
#include "stdio.h"
#include "sysLib.h"
#include "ioLib.h"
#include "string.h"

/*macro declare*/
#define DELAY_SECONDS 1/*延迟1秒*/
#define	STACK_SIZE 20000

/*varible*/
WDOG_ID wdogid;/*看门狗ID*/
int tidReceive;/*Task ID*/
int tidPrint;
int delay_sec;/*延迟时间*/
int clk_rate;
SEM_ID	synchron;/*同步信号量*/
char string[20];/*存放输入数据*/

/*func declare*/
void watchdog_service();/*中断服务程序*/
void watchdog_routine();/*延时程序*/
void progStart();
void taskReceive();
void taskPrint();/*打印程序*/
void progStop();

/**********/
void	progStart()
{
	synchron = semBCreate(SEM_Q_FIFO, SEM_EMPTY);
	tidPrint = taskSpawn("tPrint", 220, 0, STACK_SIZE, (FUNCPTR)taskPrint, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
	tidReceive = taskSpawn("tReceive", 200, 0, STACK_SIZE, (FUNCPTR)taskReceive, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
	if((wdogid=wdCreate())==NULL)
	{
		printf("create watchdog fail\n");
	}
	return;
}

void taskReceive()
{
	while(1)
  {  
    int i = 0;
    char rr[20];
    read(STD_IN,rr,20);
    for(;i<20;i++)
    {
			string[i] = '\0';
    }
    strcpy(string,rr);
    
    /*看门狗将引发中断*/   
    clk_rate=sysClkRateGet();
    delay_sec=clk_rate*DELAY_SECONDS;
    wdStart(wdogid,delay_sec,(FUNCPTR)watchdog_service,0);
    watchdog_routine();
		
    /*释放信号量*/
    semGive(synchron);
    taskDelay(10);      
  }
  return;
}

void watchdog_routine()
{
	int i = 0;
	for(;i<2;i++)
	{
		taskDelay(clk_rate);
	}
	return;
}

void watchdog_service()
{
	int m = strlen(string)-1;
	int n = 0;
	logMsg("\nthis message is sent by wdogtimer!\n",0,0,0,0,0,0);
	for(;n<m;n++)
	{
		string[n] -= ('a'-'A');
	}
	return;
}

void taskPrint()
{
	while(1)
	{
		semTake(synchron,WAIT_FOREVER);
		int l = 0;
		while(string[l])
		{
			printf("%c",string[l++]);
		}
	}
	return;
}

void progStop()
{
	taskDelete(tidReceive);
	taskDelete(tidPrint);
	semDelete(synchron);
	
	printf("The End \n");
}