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#include <STC12C5A.h>
#include "LCD1602.h"
#include "keys.h"
void PWM_Init();
void SendOneByte(unsigned char byte);
void InitUART(void);
void InitTimer1(void);
void InitTimer0(void);
unsigned char Time1_Key_Con=0;
unsigned char Speed_Change=0;
unsigned int Time1_Speed_Con=0;
unsigned int Speed_Value=0;
unsigned int Speed_Set=2400;
unsigned char View_Speed_Data[7]="3000RPM";
unsigned char View_Set_Data[7]="3000RPM";
sbit MOTOR_CW=P1^5;//正反轉控制引腳
unsigned char CW_Con=0;
sbit MOTOR_STOP=P1^4; //停止控制引腳
unsigned char STOP_Con=1;
unsigned int Send_Con=0;
unsigned char Send_Change=0;
void main()
{
InitLcd(); //初始化液晶
InitUART();
InitTimer1();
PWM_Init();
InitTimer0();
Key_Second_Function_Run=Key_Value_3|Key_Value_4; //設定按鍵為快速改變功能
CCAP0H=128; //設定占空比暫為50%
Lcd_1602_word(0x80,16,"START ");
Lcd_1602_word(0xc0,16,"Z 2400RPM");
while(1)
{
if(Send_Change)
{
Send_Change=0;
SendOneByte(0xaa);
if(CW_Con==0)
SendOneByte(0x02);
else
SendOneByte(0x01);
SendOneByte(Speed_Value/256);
SendOneByte(Speed_Value%256);
}
if(Key_Change) //按鍵處理程序
{
Key_Change=0;
switch(Key_Value)
{
case 1:
{
if(CW_Con) //改變電機的正轉和反轉
{
CW_Con=0;
MOTOR_CW=1;
Lcd_1602_word(0x80,5,"START");//顯示正轉
}
else
{
CW_Con=1;
MOTOR_CW=0;
Lcd_1602_word(0x80,5,"STOP "); //顯示反轉
}
break;
}
case 2:
{
if(STOP_Con)
{
STOP_Con=0;
MOTOR_STOP=STOP_Con;
Lcd_1602_word(0xc0,2,"F ");//顯示停止
}
else
{
STOP_Con=1;
MOTOR_STOP=STOP_Con;
Lcd_1602_word(0xc0,2,"Z " );//顯示開始
}
break;
}
case 3:
{
if(Speed_Set<4800) //設定電機的轉速設定
{
Speed_Set=Speed_Set+100;
}
break;
}
case 4:
{
if(Speed_Set>100)
{
Speed_Set=Speed_Set-100;
}
break;
}
}
View_Set_Data[0]=Speed_Set/1000+0x30;
View_Set_Data[1]=Speed_Set%1000/100+0x30;
View_Set_Data[2]=Speed_Set%100/10+0x30;
View_Set_Data[3]=Speed_Set%10+0x30;
if(View_Set_Data[0]==0x30)
{
View_Set_Data[0]=' ';
if(View_Set_Data[1]==0x30)
{
View_Set_Data[1]=' ';
if(View_Set_Data[2]==0x30)
View_Set_Data[2]=' ';
}
}
Lcd_1602_word(0xc9,7,View_Set_Data); //顯示電機的設定轉速
}
if(Speed_Change==1) //計算電機的轉速
{
Speed_Value=TH0;
Speed_Value=Speed_Value<<8;
Speed_Value+=TL0;
Speed_Value=Speed_Value*96; //得到每分鐘的轉速
View_Speed_Data[0]=Speed_Value/1000+0x30;
View_Speed_Data[1]=Speed_Value%1000/100+0x30;
View_Speed_Data[2]=Speed_Value%100/10+0x30;
View_Speed_Data[3]=Speed_Value%10+0x30;
if(View_Speed_Data[0]==0x30)
{
View_Speed_Data[0]=' ';
if(View_Speed_Data[1]==0x30)
{
View_Speed_Data[1]=' ';
if(View_Speed_Data[2]==0x30)
View_Speed_Data[2]=' ';
}
}
Lcd_1602_word(0x89,7,View_Speed_Data);
if(Speed_Value>Speed_Set) //根據電機的轉速，調劑占空比
{
if(((Speed_Value-Speed_Set)>30)&&STOP_Con)
{
if(((Speed_Value-Speed_Set)>250))
{
if(CCAP0H<20)
{
CCAP0H=10;
}
else
{
CCAP0H=CCAP0H-5; //減少占空比，提高轉速
}
}
else
{
if(CCAP0H>10&&Speed_Set!=4800)
CCAP0H--;
}
}
}
else
{
if(((Speed_Set-Speed_Value)>30)&&STOP_Con)
{
if((Speed_Set-Speed_Value)>250)
{
if(CCAP0H>=245)
{
CCAP0H=255;
}
else
{
CCAP0H=CCAP0H+5; //降低占空比，降低轉速
}
}
else
{
if(CCAP0H<255)
CCAP0H++;
}
}
}
Speed_Change=0;
InitTimer0();
}
}
}
void Timer0Interrupt(void) interrupt 1
{
}
void InitTimer0(void)
{
TMOD |= 0x05;
TH0 = 0x00;
TL0 = 0x00;
EA = 1;
ET0 = 1;
TR0 = 1;
}
void InitTimer1(void)
{
TMOD |= 0x10;
TH1 = 0xFC;
TL1 = 0x18;
EA = 1;
ET1 = 1;
TR1 = 1;
}
void Timer1Interrupt(void) interrupt 3
{
TH1 = 0xFC;
TL1 = 0x18;
Send_Con++;
if(Send_Con==500)
{
Send_Con=0;
Send_Change=1;
}
if(Speed_Change==0)
Time1_Speed_Con++;
if(Time1_Speed_Con==100)
{
TR0 = 0;
Time1_Speed_Con=0;
Speed_Change=1;
}
Time1_Key_Con++;
if(Time1_Key_Con==10)
{
Time1_Key_Con=0;
Key_Acquisition();
}
}
void PWM_Init() //pwm初始化
{
CCON = 0; //Initial PCA control register
CL = 0; //Reset PCA base timer
CH = 0;
CMOD = 0x02; //Set PCA timer clock source as Fosc/2
CCAP0H = CCAP0L = 0xff; //PWM0 port output 50% duty cycle square wave
CCAPM0 = 0x42; //PCA module-0 work in 8-bit PWM mode and no PCA interrupt
CR = 1; //PCA timer start run //PCA timer start run
}
void InitUART(void) //串口初始化設定
{
PCON &= 0x7F; //波特率不倍速
SCON = 0x50; //8位數據,可變波特率
AUXR &= 0xFB; //獨立波特率發生器時鐘為Fosc/12,即12T
BRT = 0xFD; //設定獨立波特率發生器重裝值
AUXR |= 0x01; //串口1選擇獨立波特率發生器為波特率發生器
AUXR |= 0x10; //啟動獨立波特率發生器
}
void SendOneByte(unsigned char byte) //串口一個字符發送函數
{
TI = 0;
SBUF = byte;
while(!TI);
TI = 0;
}

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