主题 : 外部按键的问题 复制链接 | 浏览器收藏 | 打印
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楼主  发表于: 2011-05-14 17:30

 外部按键的问题

#include <stdlib.h>
#include <string.h>
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#include "mmu.h"
#include "profile.h"
#include "memtest.h"    
#define _ISR_STARTADDRESS 0x33ffff00



#define U32 unsigned int



#define pISR_EINT0            (*(unsigned *)(_ISR_STARTADDRESS+0x20))

#define pISR_EINT1            (*(unsigned *)(_ISR_STARTADDRESS+0x24))

#define pISR_EINT2            (*(unsigned *)(_ISR_STARTADDRESS+0x28))

#define pISR_EINT4_7  (*(unsigned *)(_ISR_STARTADDRESS+0x30))



#define rSRCPND     (*(volatile unsigned *)0x4a000000)      //Interrupt request status

#define rINTMSK     (*(volatile unsigned *)0x4a000008)       //Interrupt mask control

#define rINTPND     (*(volatile unsigned *)0x4a000010)       //Interrupt request status



#define rGPBCON    (*(volatile unsigned *)0x56000010) //Port B control

#define rGPBDAT    (*(volatile unsigned *)0x56000014) //Port B data

#define rGPBUP     (*(volatile unsigned *)0x56000018)  //Pull-up control B



#define rGPFCON    (*(volatile unsigned *)0x56000050) //Port F control



#define rEXTINT0   (*(volatile unsigned *)0x56000088)  //External interrupt control register 0

#define rEINTMASK  (*(volatile unsigned *)0x560000a4) //External interrupt mask

#define rEINTPEND  (*(volatile unsigned *)0x560000a8) //External interrupt pending



static void __irq Key1_ISR(void)   //EINT1

{

       int led;

       rSRCPND = rSRCPND | (0x1<<1);

       rINTPND = rINTPND | (0x1<<1);

       led = rGPBDAT & (0x1<<5);

       if (led ==0)

              rGPBDAT = rGPBDAT | (0x1<<5);

       else

              rGPBDAT = rGPBDAT & ~(0x1<<5);

}



static void __irq Key2_ISR(void)   //EINT4

{

       int led;

       rSRCPND = rSRCPND | (0x1<<4);

       rINTPND = rINTPND | (0x1<<4);

       if(rEINTPEND&(1<<4))

       {

              rEINTPEND = rEINTPEND | (0x1<<4);

              led = rGPBDAT & (0x1<<6);

              if (led ==0)

                     rGPBDAT = rGPBDAT | (0x1<<6);

              else

                     rGPBDAT = rGPBDAT & ~(0x1<<6);

       }

}



static void __irq Key3_ISR(void)   //EINT2

{

       int led;

       rSRCPND = rSRCPND | (0x1<<2);

       rINTPND = rINTPND | (0x1<<2);

       led = rGPBDAT & (0x1<<7);

       if (led ==0)

              rGPBDAT = rGPBDAT | (0x1<<7);

       else

              rGPBDAT = rGPBDAT & ~(0x1<<7);

}



void __irq Key4_ISR(void)   //EINT0

{

       int led;

       rSRCPND = rSRCPND | 0x1;

       rINTPND = rINTPND | 0x1;

       led = rGPBDAT & (0x1<<8);

       if (led ==0)

              rGPBDAT = rGPBDAT | (0x1<<8);

       else

              rGPBDAT = rGPBDAT & ~(0x1<<8);

}



void Main(void)

{

       int light;
       rGPBCON = 0x015550;

       rGPBUP = 0x7ff;

       rGPFCON = 0xaaaa;

    

       rSRCPND = 0x17;

       rINTMSK = ~0x17;

       rINTPND =0x17;

       rEINTPEND = (1<<4);

       rEINTMASK = ~(1<<4);

       rEXTINT0 = 0x20222;

    

       light = 0x0;

       rGPBDAT = ~light;

        

       pISR_EINT0 = (U32)Key4_ISR;

       pISR_EINT1 = (U32)Key1_ISR;

       pISR_EINT2 = (U32)Key3_ISR;

       pISR_EINT4_7 = (U32)Key2_ISR;

      

       while(1)

              ;      

}

我的这段代码编译没有问题,就出不来结果,是什么情况,请高手指点一下,十分感谢!
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1楼  发表于: 2011-05-14 18:32

 回 楼主(随梦飞扬) 的帖子

请问你是在内存跑,定nandflash加载跑?两种方式的运行效果会有很大差别
奋斗于嵌入式
级别: 新手上路
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2楼  发表于: 2011-05-15 10:47
定nandflash加载跑
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3楼  发表于: 2011-05-24 15:27
中断都没有使能,怎么跑起来呢