LED矩阵海浪式呼吸效果单片机源程序

ID:412944 · 发表于 2018-12-4 12:47

#include <REG51.H>
#define uint unsigned int
#define uchar unsigned char
unsigned char code tabb[]= {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //衡条表
uint PWM_Count,PWM_ZKB,PWM_Delay,PWM_Number;
unsigned char LED;
bit PWM_END;
void Timer0Init(void);             //10微秒@12.000MHz
void Delay500MS();

/*************主函数*****************************/
void main(void)
{
      Timer0Init();
P2=0x00;
while(1)
{
      for(LED=0; LED<8; LED++) //循环8次逐条点亮8个LED点阵灯
      {
         P0=tabb[7-LED];
         Delay500MS();
         P0=0x00;
                     Delay500MS();
         TR0=1;
         PWM_END = 1;
         while(PWM_END);
      }
}
}

void Timer0Init(void)             //10微秒@12.000MHz
{
TMOD &= 0xF0;             //设置定时器模式
TMOD |= 0x02;             //设置定时器模式
TL0 = 0xF7;             //设置定时初值
TH0 = 0xF7;             //设置定时重载值
TF0 = 0;             //清除TF0标志
TR0 = 0;             //定时器0开始计时
ET0 = 1;
EA = 1;
}

/*************延时函数*********************/
void Delay500MS()             //@11.0592MHz
{
      unsigned char i, j, k;
      i = 4;
      j = 129;
      k = 119;
      do
      {
            do
            {
                     while (--k);
            } while (--j);
      } while (--i);
}

void TIME0()       interrupt 1
{
PWM_Count++;
if(PWM_Count > 100)
{
      PWM_Count = 0;
      PWM_Delay++;
      if(PWM_Delay > 20)
      {
                     PWM_Delay = 0;
//                      if(PWM_ZKB > 60)
//                               PWM_ZKB +=2;
//                      else
                              PWM_ZKB++;
      }
      if(PWM_ZKB > 30)
      {
         PWM_ZKB = 0;
         PWM_Number++;
         if(PWM_Number > 3)
         {
            PWM_Number = 0;
            PWM_END=0;
            TR0 = 0;
         }
      }
      }
      if(PWM_Count < PWM_ZKB)
         P0=tabb[7-LED];
      else
         P0 = 0x00;

}

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