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電子工程網(wǎng)

標(biāo)題: 2440按鍵中斷的問(wèn)題 [打印本頁(yè)]

作者: penny 時(shí)間: 2009-12-13 19:27
標(biāo)題: 2440按鍵中斷的問(wèn)題
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#define KEY1 (1<<0)
#define KEY2 (1<<3)
#define KEY3 (1<<5)
#define KEY4 (1<<6)
#define LED1 (1<<5)
#define LED2 (1<<6)
#define LED3 (1<<7)
#define LED4 (1<<8)

void IRQ_KEY(void)
{
rSRCPND&=(~(1<<5));
rINTPND&=(~(1<<5));
rEINTPEND&=(~((1<<8)|(1<<11)|(1<<13)|(1<<14)));
rGPGCON = rGPGCON & (~((3 << 0) | (3 << 6) | (3 << 10) | (3 << 12)));
if (rGPGDAT & KEY1){
      rGPBDAT |= LED1;
}
else {
      rGPBDAT &= ~LED1;
}
if (rGPGDAT & KEY2){
      rGPBDAT |= LED2;
}
else {
      rGPBDAT &= ~LED2;
}
if (rGPGDAT & KEY3){
      rGPBDAT |= LED3;
}
else {
      rGPBDAT &= ~LED3;
}
if (rGPGDAT & KEY4){
      rGPBDAT |= LED4;
}
else {
      rGPBDAT &= ~LED4;
}
rGPGCON |= (2 << 0) | (2 << 6) | (2 << 10) | (2 << 12);
}

void Main(void){
rGPBCON = (rGPBCON & 0xfffc03ff) | 0x15400;
rGPBDAT |= LED1 | LED2 | LED3 | LED4;
      while (1);
}

void EINT_Init(void){
rGPGCON &= (~((3 <<0) | (3 <<6) | (3 << 10) | (3 << 12)));
  rGPGCON |= (2 << 0) | (2 << 6) | (2 << 10) | (2 << 12);
  rEXTINT1 = rEXTINT1 & (~((7 << 0) | (7 << 12) | (7 << 20) | (7 << 24)));
  rEXTINT1 = rEXTINT1 | ((6 << 0) | (6 << 12) | (6 << 20) | (6 << 24));
  pISR_EINT8_23 = (unsigned int)IRQ_KEY;
  rPRIORITY = 0x7f;    // 使用默認(rèn)的固定的優(yōu)先級(jí)
rINTMOD = 0x00000000;    // 所有中斷均為IRQ中斷
  rSRCPND&=(~(1<<5));
rINTPND&=(~(1<<5));
rEINTPEND&=(~((1<<8)|(1<<11)|(1<<13)|(1<<14)));
  rINTMSK &= (~(1<<5)); // 使能外部中斷8_23
  rEINTMASK &= (~((1 << 8) | (1 << 11) | (1 << 13) | (1 << 14)));
}

程序MAKE后無(wú)錯(cuò)誤提示，仿真運(yùn)行后在板子上按鍵后LED沒(méi)有反應(yīng)，調(diào)試時(shí)GO后程序有時(shí)候會(huì)跳入一個(gè)死循環(huán)：33f01608 [0xeafffffe] dcd 0xeafffffe;
但有時(shí)候會(huì)在主程序斷點(diǎn)停下來(lái)。
請(qǐng)教高手什么原因啊，是程序問(wèn)題么？？

作者: penny 時(shí)間: 2009-12-14 21:58
有沒(méi)有人知道原因的啊，我換了個(gè)程序，還是出現(xiàn)上面的問(wèn)題，ＧＯ后程序進(jìn)入ＰＣ為33f01608 [0xeafffffe] dcd 0xeafffffe;死循環(huán)．

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