本资料为ATMEGA8单片机位定义闪烁灯设计源代码及仿真。

#include <iom8v.h>
/**********************************************************************
函数数据类型说明
**********************************************************************/
#define uchar unsigned char
#define uint unsigned int

//定义BIT 0-7 置1
#define BIT0_POS (1<<0)
#define BIT1_POS (1<<1)
#define BIT2_POS (1<<2)
#define BIT3_POS (1<<3)
#define BIT4_POS (1<<4)
#define BIT5_POS (1<<5)
#define BIT6_POS (1<<6)
#define BIT7_POS (1<<7)

//定义BIT 0-7 清零
#define BIT0_NEG ((unsigned char)(~(1<<0)))
#define BIT1_NEG ((unsigned char)(~(1<<1)))
#define BIT2_NEG ((unsigned char)(~(1<<2)))
#define BIT3_NEG ((unsigned char)(~(1<<3)))
#define BIT4_NEG ((unsigned char)(~(1<<4)))
#define BIT5_NEG ((unsigned char)(~(1<<5)))
#define BIT6_NEG ((unsigned char)(~(1<<6)))
#define BIT7_NEG ((unsigned char)(~(1<<7)))

//定义红色LED熄灭、亮、翻转
#define LED_red_OFF PORTB&=BIT0_NEG
#define LED_red_ON PORTB|=BIT0_POS
#define LED_red_OTN PORTB^=BIT0_POS

//定义绿色LED熄灭、亮、翻转
#define LED_green_OFF PORTB&=BIT1_NEG
#define LED_green_ON PORTB|=BIT1_POS
#define LED_green_OTN PORTB^=BIT1_POS

/**********************************************************************
MS级延时函数程序，参数i 延时时间
**********************************************************************/
void DelayMS(uint i)
{
uint j;
for(;i!=0;i--)
{
for(j=8000;j!=0;j--);
}
}
/**********************************************************************
主函数
**********************************************************************/
void main(void)
{
DDRB=0XFF;//端口设置，PB口设置为推挽1输出
PORTB=0XFF;
while(1)//程序无条件执行
{
LED_red_ON;
LED_green_ON;
DelayMS(100);//延时时间约100MS
LED_red_OFF;
LED_green_OFF;
DelayMS(100);//延时时间约100MS
}
}
/**********************************************************************
结束
**********************************************************************/