rtc.c

来自「经测试过定时器操作的程序」· C语言 代码 · 共 58 行

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "2440addr.h"
#include "option.h"
#include "mmu.h"

void Delay(int times);


extern EnableInt();
extern DisableInt();



int main(void)
{    
    rGPFCON =0x5522;		    //PF0/2  = EINT0/EINT2
    rGPFUP=0xffff;			/*禁止GPF端口的上拉*/
    rGPFDAT &= 0xff0f;
    Delay(0x0);
    rGPFDAT |= 0x00f0;
    
    rSRCPND=0x00004000;
    rTCNTB4=0xffff;
    rTCFG0=0x00ffffff;
    rTCFG1=0x00020000;
    rTCON=0x00300000;
    rTCON=0x00100000;
    
    while(1)
    {
      while((rSRCPND&0xffffbfff)==0)
        {
         rSRCPND=0x00004000;
         rGPFDAT &= 0xff0f;
         Delay(0x0);
         Delay(0x0);
         rGPFDAT |= 0x00f0;
         Delay(0x0);
         Delay(0x0);
        }
    }
     
}


void Delay(int times)
{
	int i,j;
	for(i=1;i<200000;i++)
	{
		
	}  
}