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问 想实现KEY1按键控制LED1闪烁，但是结果却KEY1不起作用，运行后LED1亮，按复位键LED1会闪烁。代码如下，还望各位帮忙，谢谢！

#include "Config.h"
#include "Target.h"

#define KEY1   (1<<16)
#define LED1   (1<<22)

#define OSStkLen  64

OS_STK  task0Stk[OSStkLen];
OS_STK  task1Stk[OSStkLen];

void task0(void *pdata);
void task1(void *pdata);

int main(void)
{
IO0DIR = LED1;                                                 
PINSEL0 =0x00000000;

OSInit();
OSTaskCreate(task0,(void *)0,&task0Stk[OSStkLen-1],4);
OSTaskCreate(task1,(void *)0,&task1Stk[OSStkLen-1],5);
OSStart();
return 0;
}


void task0(void *pdata)
{
   pdata=pdata;
   TargetInit ();                         
    for(;;)
    {
        OSTaskSuspend(OS_PRIO_SELF);                  
                
        IO0CLR = LED1;                                 
        OSTimeDly(OS_TICKS_PER_SEC / 8);               
        IO0SET = LED1;                                 
        OSTimeDly(OS_TICKS_PER_SEC / 4);               
        IO0CLR = LED1;                                 
        OSTimeDly(OS_TICKS_PER_SEC / 8);               
        IO0SET = LED1;                                 
        OSTimeDly(OS_TICKS_PER_SEC / 4);               
    }
    
}


void task1(void *pdata)
{
    pdata = pdata;
   
    for(;;)
    {
        OSTimeDly(OS_TICKS_PER_SEC / 50);        
        if((IO0PIN & KEY1) != 0)                 
        {
            continue;
        }
        
        OSTimeDly(OS_TICKS_PER_SEC / 50);        
        if((IO0PIN & KEY1) != 0)
        {
            continue;
        }
        
        OSTaskResume(4);                         
        while((IO0PIN & KEY1) == 0)             
        {
            OSTimeDly(OS_TICKS_PER_SEC / 50);    
        }
    }
} 答 1: 建议你先测试一下你的IO操作是否正确