做调快慢的单片机呼吸灯效果,有呼吸效果了,按键却不能调

ID:879080 · 发表于 2023-11-25 21:17

#include <reg51.h>
#include "intrins.h"

#define uchar unsigned char
#define uint unsigned int

uchar zkb,pwm;
uchar RunMode;
sfr    P1M1 = 0x91;
sfr    P1M0 = 0x92;

sfr    P3M1 = 0xb1;
sfr    P3M0 = 0xb2;

//**********************************System Fuction*************************************************
void Delay1ms( uint count)
{
         uint i,j;
      for(i=0;i<count;i++)
      for(j=0;j<120;j++);
}

uchar GetKey(void)
{
      uchar KeyTemp,CheckValue,Key = 0x00;
      CheckValue = P1&0x43;
      if(CheckValue==0x43)
            return 0x00;

      Delay1ms(10);
      KeyTemp = P1&0x43;
      if(KeyTemp==CheckValue)
            return 0x00;

      if(!(CheckValue&0x01))
            Key|=0x01;
      if(!(CheckValue&0x02))
            Key|=0x02;
      if(!(CheckValue&0x40))
            Key|=0x40;
      return Key;
}
uint TimerCount,SystemSpeed,SystemSpeedIndex;
void InitialTimer0(void) //100us@11.0592MHZ
{
// AUXR &= 0x7F;                      //定时器时钟12T模式

      TMOD = 0x00;                      //设置定时器模式
      TL0 = 0xA4;                               //设置定时初始值
      TH0 = 0xFF;                               //设置定时初始值
      TR0 = 1;                               //定时器0开始计时
      ET0=1;
      EA=1;

}
uint code SpeedCode[]={ 1, 2, 3, 5, 8,  10,  14,  17,  20,  30,
                              40,  50,  60,  70,  80,  90, 100, 120, 140, 160,
                              180, 200, 300, 400, 500, 600, 700, 800, 900,1000};//30
void SetSpeed( uchar Speed)
{
      SystemSpeed =SpeedCode[Speed];
}

void LEDShow( uint LEDStatus)
{
      P3 = (LEDStatus&0xFF);

}

void InitialCPU(void)
{
      RunMode = 0x00;
      TimerCount = 0;
      SystemSpeedIndex = 10;

      P1 = 0xFF;

      P3 = 0xFF;
      Delay1ms(500);
      P1 = 0xFF;

      P3 = 0xFF;
      SetSpeed(SystemSpeedIndex);

}

unsigned int LEDIndex = 0;
//bit LEDDirection = 1,LEDFlag = 1;
void Mode_0(void)
{
SystemSpeed=1;

            if(pwm>zkb)
      {
            LEDShow(LEDIndex=0xff);
}
      else
{
      LEDShow(LEDIndex=0x00);
}
}
//Mode 1
void Mode_1(void)
{
      LEDShow(0x80>>LEDIndex);
      LEDIndex = (LEDIndex+1)%8;
}

void TimerEventRun(void)
{
      if(RunMode==0x00)
      {
            Mode_0();
      }
      else if(RunMode ==0x01)
      {
            Mode_1();
      }

}
void Timer0(void) interrupt 1 using 1
{
               static  uchar max=0;
      if(++TimerCount>=SystemSpeed)
      {
                              TimerCount = 0;
                              TimerEventRun();
}
      pwm++;          //震荡周期变量
  if(pwm>200)    //如果数值大于100
{
pwm=0;          //周期归零
if(max==0){zkb++;}    //MAX占空比渐加渐减标志位默认max为0.每一周期占空比渐加
if(max==1){zkb--;}    //MAX占空比渐加渐减标志位如果max为1.每一周期占空比渐减
if(zkb==200){max=1;}  //如果占空比的值为100    标志位MAX置为1.渐减
if(zkb==0){max=0;}    //如果占空比的值为0       标志位MAX置为0.渐加

}

  }

unsigned char MusicIndex = 0;
void KeyDispose(unsigned char Key)
{
      if(Key&0x01)
      {
            LEDDirection = 1;
            LEDIndex = 0;
            LEDFlag = 1;
            RunMode = (RunMode+1)%2;

      }
      if(Key&0x02)
      {
            if(SystemSpeedIndex>0)
            {
                     --SystemSpeedIndex;
                     SetSpeed(SystemSpeedIndex);
            }
            else
            {

            }
      }
      if(Key&0x40)
      {
            if(SystemSpeedIndex<28)
            {
                     ++SystemSpeedIndex;
                     SetSpeed(SystemSpeedIndex);
            }
            else
            {

            }
      }
}

//***********************************************************************************
main()
{
      unsigned char Key;
      P1M0 = 0x00;
P1M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;

      InitialCPU();
      InitialTimer0();

      while(1)
      {
            Key = GetKey();
            if(Key!=0x00)
            {
                     KeyDispose(Key);
            }
      }
}

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