51单片机流水灯闪烁越来越快代码
时间: 2024-04-14 12:22:49 浏览: 139
当然,我可以为您介绍一下51单片机流灯闪烁越来越快的代码。以下是一个简单的示例代码:
```c
#include <reg51.h>
#define LED P1
void delay(unsigned int time) {
unsigned int i, j;
for(i = 0; i < time; i++)
for(j = 0; j < 125; j++);
}
void main() {
unsigned int i, j;
while(1) {
for(i = 0; i < 8; i++) {
LED = ~(0x01 << i);
delay(500);
}
for(j = 7; j > 0; j--) {
LED = ~(0x01 << j);
delay(500);
}
}
}
```
这段代码使用了P1口作为LED灯的控制口,通过循环控制LED灯的亮灭顺序和延时时间,实现了流水灯闪烁越来越快的效果。
相关问题
51单片机流水灯如何闪烁
以下是51单片机流水灯闪烁的代码实现:
```c
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit LED1 = P0^0;
sbit LED2 = P0^1;
sbit LED3 = P0^2;
sbit LED4 = P0^3;
sbit LED5 = P0^4;
sbit LED6 = P0^5;
sbit LED7 = P0^6;
sbit LED8 = P0^7;
void delay(uint xms) // 延时函数
{
uint i, j;
for (i = xms; i > 0; i--)
for (j = 110; j > 0; j--);
}
void main()
{
uchar i;
while (1)
{
for (i = 0; i < 8; i++) // 从左往右流水灯
{
switch (i)
{
case 0: LED1 = 0; break;
case 1: LED2 = 0; break;
case 2: LED3 = 0; break;
case 3: LED4 = 0; break;
case 4: LED5 = 0; break;
case 5: LED6 = 0; break;
case 6: LED7 = 0; break;
case 7: LED8 = 0; break;
}
delay(100); // 延时100ms
switch (i)
{
case 0: LED1 = 1; break;
case 1: LED2 = 1; break;
case 2: LED3 = 1; break;
case 3: LED4 = 1; break;
case 4: LED5 = 1; break;
case 5: LED6 = 1; break;
case 6: LED7 = 1; break;
case 7: LED8 = 1; break;
}
}
for (i = 7; i > 0; i--) // 从右往左流水灯
{
switch (i)
{
case 0: LED1 = 0; break;
case 1: LED2 = 0; break;
case 2: LED3 = 0; break;
case 3: LED4 = 0; break;
case 4: LED5 = 0; break;
case 5: LED6 = 0; break;
case 6: LED7 = 0; break;
case 7: LED8 = 0; break;
}
delay(100); // 延时100ms
switch (i)
{
case 0: LED1 = 1; break;
case 1: LED2 = 1; break;
case 2: LED3 = 1; break;
case 3: LED4 = 1; break;
case 4: LED5 = 1; break;
case 5: LED6 = 1; break;
case 6: LED7 = 1; break;
case 7: LED8 = 1; break;
}
}
}
}
```
写一份用51单片机实现流水灯实验的代码,要求控制流水灯闪烁频次按键可调
为了编写51单片机流水灯实验的代码,我们通常会选择P0口作为数码管的数据线,P3口作为按键输入,使用定时器T0进行频率调节。这里是一个基本的示例,假设数码管有8位:
```c
#include <reg52.h>
sbit KEY = P3^0; // 按键P3.0
sbit D7 = P0^7;
sbit D6 = P0^6;
// ... 其他D0到D7依次类推
void delay(unsigned int time) {
unsigned char i;
for (i = 0; i < time; i++);
}
unsigned char frequency = 0; // 初始频率设为0,可以增加变量接收用户输入
void main() {
TMOD = 0x01; // 设置定时器T0工作于模式1
TH0 = 0xFD; // 计算出周期时间(晶振频率除以频率值)
TL0 = 0xFD;
while (1) {
if (KEY == 0) { // 检查按键是否按下
frequency++; // 当按键按下,频率加一
if (frequency > 255) { // 防止频率过高溢出
frequency = 0;
}
// 更新定时器初值以调整闪烁频率
TH0 = 0xFD - (frequency << 1); // 左移一位以便减小计数
TL0 = 0xFD - (frequency << 1);
}
D7 = ~D7; // 数码管逐位翻转,流水灯效果
delay(100); // 暂停一段时间
D7 = ~D7; // 反转回来,继续下一个位置
delay(100); // 等待足够长的时间让下一个数字显示
}
}
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