首页51单片机流水灯如何闪烁

51单片机流水灯如何闪烁

时间: 2023-12-16 19:04:43 浏览: 72

51单片机流水灯实验(程序+报告)

本实验利用4个按键，当KEY0按下时，P0口所接的发光二极管（LED3~LED10）以100ms的时间间隔自上至下循环点亮3圈，当KEY1按下时，以200ms的时间间隔自下至上循环点亮3圈；当KEY2按下时，8个LED闪烁3次，时间间隔为500ms；当KEY3按下时，发光二极管全部点亮3秒后熄灭。平时LED的状态为全部熄灭。

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; } } } } ```

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