text1.c

来自「RVMDK+PROTEUS的仿真」· C语言 代码 · 共 29 行

#include<stdio.h>
#include<lpc21xx.h>
#define KEY 0x10000000

unsigned long  DISP_TAB[8] = { 0xff01ffff, 0xff02ffff, 0xff04ffff, 0xff08ffff,
                              0xff10ffff, 0xff20ffff, 0xff40ffff, 0xff80ffff};
void DelayNS(unsigned long dly);

int main(){
unsigned char i;
IO1DIR=0x00ff0000;
while((IO1PIN&KEY)!=0){
for(i=0;i<8;i++){
IO1CLR=DISP_TAB[i];
DelayNS(10);
IO1SET=0xffffffff;
     }
	}
}

void  DelayNS(unsigned long  dly)
{   unsigned long  i;

    for(; dly>0; dly--) 
    {
        for(i=0; i<5000; i++);
                      
    }
}