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用ATmega128A编写的这段程序为什么延时函数无效?下载后LED只亮不灭。程序单步执行通过了,16M外部晶振, 10
#include<iom128v.h>#include<macros.h>#defineucharunsignedchar#defineuintunsignedintvo...
#include <iom128v.h>
#include <macros.h>
#define uchar unsigned char
#define uint unsigned int
void delay(uint ms)
{
volatile uint i,j;
for(i=0;i<ms;i++)
for(j=0;j<1141;j++);
}
void main()
{
DDRB=0XFF;
PORTB=0X00;
while(1)
{
PORTB=0X01;
delay(500);
PORTB=0X00;
delay(500);
}
} 展开
#include <macros.h>
#define uchar unsigned char
#define uint unsigned int
void delay(uint ms)
{
volatile uint i,j;
for(i=0;i<ms;i++)
for(j=0;j<1141;j++);
}
void main()
{
DDRB=0XFF;
PORTB=0X00;
while(1)
{
PORTB=0X01;
delay(500);
PORTB=0X00;
delay(500);
}
} 展开
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