利用期末闲暇之余,制作了一个流水灯按键程序,四个按键控制LED流水灯的操作加速 -

标题: 利用期末闲暇之余,制作了一个流水灯按键程序,四个按键控制LED流水灯的操作加速 [打印本页]

作者: 单片机重购 时间: 2025-6-5 23:29
标题: 利用期末闲暇之余,制作了一个流水灯按键程序,四个按键控制LED流水灯的操作加速
#include <REGX51.H>

sbit K1 = P3 ^ 2;
sbit K2 = P3 ^ 3;
sbit K3 = P3 ^ 4;
sbit K4 = P3 ^ 5;

unsigned char led_switch = 0;
volatile unsigned int number = 200;
volatile unsigned char temp;

void Delay(unsigned int xms);
void interrupt_init();
void timer_init();

void main()
{
      unsigned char i;

      interrupt_init();
      timer_init();

      while (1)
      {
            if (led_switch == 1)
            {
                     temp = 0x80;

                     for (i = 0; i < 8; i++)
                     {
                              P1 = ~(temp >> i);
                              Delay(number);
                     }

         if (led_switch == 0)
         {
            continue;
         }

                     temp = 0x01;

                     for (i = 0; i < 8; i++)
                     {
                              P1 = ~(temp << i);
                              Delay(number);
                     }
            }

      }
}

void interrupt_init()
{
      IT0 = 1;
      EX0 = 1;
      IT1 = 1;
      EX1 = 1;
      EA = 1;
}

void timer_init()
{
      TMOD = 0X11;                               // 0001 0101 T1定时方式，模式1(16位),T0定时方式，模式1(16位)
      TH0 = (65536 - 5000) / 256; // 初始值为64536,定时5000微秒相当于5毫秒;
      TL0 = (65536 - 5000) % 256; //
      ET0 = 1;
      TR0 = 1;                                     // 启动定时器T0
}
void Delay(unsigned int ms)
{
unsigned char i, j;

while (ms--)
{
      i = 2;
      j = 239;

      do
      {
         while (--j);
      } while (--i);
}
}

void exint0_ISR() interrupt 0
{
      led_switch = 1;
}

void exint1_ISR() interrupt 2
{
      temp = 0x00;
P1 = 0xFF;
led_switch = 0;
}

void timer0_ISR() interrupt 1
{
      TH0 = (65536 - 5000) / 256;
      TL0 = (65536 - 5000) % 256;

if ((P3 & 0x30) != 0x30)
{
      TR0 = 0;
      P1 = 0xFF;
      Delay(50);

      if ((P3 & 0x30) != 0x30)
      {
         if (K3 == 0)
         {
            number -= 50;
            if (number <= 50)
            {
                  number = 50;
            }
         }

         if (K4 == 0)
         {
            number += 50;
            if (number >= 500)
            {
                  number = 500;
            }
         }
      }

      TR0 = 1;
}
}

作者: cy009 时间: 2025-6-6 08:42
在定时器中断中使用延时函数，不妥呵兄弟

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