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#include <REG52.H>
unsigned char RunMode;
//**********************************System Fuction*************************************************
void Delay1ms(unsigned int count)
{
unsigned int i,j;
for(i=0;i<count;i++)
for(j=0;j<120;j++);
}
unsigned char GetKey(void)
{
unsigned char KeyTemp,CheckValue,Key = 0x00;
CheckValue = P3&0x32;
if(CheckValue==0x32)
return 0x00;
Delay1ms(10); //延遲1ms（10）
KeyTemp = P3&0x32;
if(KeyTemp==CheckValue)
return 0x00;
if(!(CheckValue&0x02))
Key|=0x01;
if(!(CheckValue&0x10))
Key|=0x02;
if(!(CheckValue&0x20))
Key|=0x04;
return Key;
}
unsigned int TimerCount,SystemSpeed,SystemSpeedIndex;
void InitialTimer2(void)
{
T2CON = 0x00; //16 Bit Auto-Reload Mode
TH2 = RCAP2H = 0xFC; //重裝值,初始值 TL2 = RCAP2L = 0x18;
ET2=1; //定時器 2 中斷允許
TR2 = 1; //定時器 2 啟動
EA=1;
}
unsigned int 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(unsigned char Speed)
{
SystemSpeed =SpeedCode[Speed];
}
void LEDShow(unsigned long LEDStatus) //修改處
{
P0 = ~(LEDStatus&0x00FF);
P1 = ~((LEDStatus>>8)&0x00FF);
P2 = ~((LEDStatus>>16)&0x00FF); //修改處
}
void InitialCPU(void)
{
RunMode = 0x00;
TimerCount = 0;
SystemSpeedIndex = 10;
P0 = 0xFF;
P1 = 0xFF;
P2 = 0xFF;
P3 = 0xFF;
Delay1ms(500);
P0 = 0xFF;
P1 = 0xFF;
P2 = 0xFF;
P3 = 0xFF;
SetSpeed(SystemSpeedIndex);
}
//Mode 0
unsigned int LEDIndex = 0;
bit LEDDirection = 1,LEDFlag = 1;
void Mode_0(void)
{
if(LEDDirection)
LEDShow(0x000001<<LEDIndex); //修改處
else
LEDShow(0x800000>>LEDIndex); //修改處
if(LEDIndex==23) //修改處
LEDDirection = !LEDDirection;
LEDIndex = (LEDIndex+1)%24; //修改處
}
void TimerEventRun(void)
{
if(RunMode ==0x00)
{
Mode_0();
}
}
void Timer2(void) interrupt 5 using 3
{
TF2 = 0; //中斷標志清除( Timer2 必須軟件清標志!)
if(++TimerCount>=SystemSpeed)
{
TimerCount = 0;
TimerEventRun();
}
}
unsigned char MusicIndex = 0;
void KeyDispose(unsigned char Key)
{
if(Key&0x02)
{
if(SystemSpeedIndex>0)
{
--SystemSpeedIndex;
SetSpeed(SystemSpeedIndex);
}
else
{
}
}
if(Key&0x04)
{
if(SystemSpeedIndex<28)
{
++SystemSpeedIndex;
SetSpeed(SystemSpeedIndex);
}
else
{
}
}
}
//***********************************************************************************
main()
{
unsigned char Key;
InitialCPU();
InitialTimer2();
while(1)
{
Key = GetKey();
if(Key!=0x00)
{
KeyDispose(Key);
}
}
}

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