基于51单片机的C语言程序设计论文

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基于51单片机的C语言程序设计实训100例

第 01 篇 基础程序设计

01闪烁的LED

/* 名称：闪烁的LED

说明：LED按设定的时间间隔闪烁

*/

#include

#define uchar unsigned char

#define uint unsigned int

sbit LED=P1^0;

//延时

void DelayMS(uint x)

{

uchar i;

while(x--)

{

for(i=0;i<120;i++);

}

}

//主程序

void main()

{

while(1)

{

LED=~LED;

DelayMS(150);

}

}

02 从左到右的流水灯

/* 名称：从左到右的流水灯

说明：接在P0口的8个LED从左到右循环依次点亮，产生走马灯效果

*/

#include

#include

#define uchar unsigned char

#define uint unsigned int

//延时

void DelayMS(uint x)

{

uchar i;

while(x--)

{

for(i=0;i<120;i++);

}

}

//主程序

void main()

{

P0=0xfe;

while(1)

{

P0=_crol_(P0,1); //P0的值向左循环移动

DelayMS(150);

}

}

03 8只LED左右来回点亮

/* 名称：8只LED左右来回点亮

说明：程序利用循环移位函数_crol_和_cror_形成来回滚动的效果

*/

#include

#include

#define uchar unsigned char

#define uint unsigned int

//延时

void DelayMS(uint x)

{

uchar i;

while(x--)

{

for(i=0;i<120;i++);

}

}

//主程序

void main()

{

uchar i;

P2=0x01;

while(1)

{

for(i=0;i<7;i++)

{

P2=_crol_(P2,1); //P2的值向左循环移动

DelayMS(150);

}

for(i=0;i<7;i++)

{

P2=_cror_(P2,1); //P2的值向右循环移动

DelayMS(150);

}

}

}

04 花样流水灯

/* 名称：花样流水灯

说明：16只LED分两组按预设的多种花样变换显示

*/

#include

#define uchar unsigned char

#define uint unsigned int

uchar code Pattern_P0[]=

{

0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,

0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,

0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,

0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,

0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,

0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff

};

uchar code Patte