main.lst

一个相当不错的基于MCS51的电动机测速程序源代码.

C51 COMPILER V6.02  MAIN                                                                   08/14/2005 16:24:52 PAGE 1   


C51 COMPILER V6.02, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN .\main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\main.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "c8051f020.h"                
   2          #include <intrins.h>
   3          
   4          sfr16 DAC0  = 0xd2;                 // DAC0 data
   5          #define PRT0CF P0MDOUT
   6          #define PRT1CF P1MDOUT
   7          #define PRT2CF P2MDOUT
   8          #define SetSpeed 30
   9          
  10          
  11          unsigned int Count1s=1000;
  12          unsigned int SaveMotorCount,MotorCount=0;
  13          unsigned int iDAC0=2048;
  14          int SD;
  15          unsigned char Count1ms;
  16          char GetKeyValue(void);
  17          
  18          void Test7279(bit LoopFlag);
  19          void DispLED(char *DispBuf,char ShowDot);	//ShowDot 显示小数点位 
  20          void TestMotor(void);
  21          
  22          
  23          
  24          
  25          
  26          void Delay1us(unsigned char us)
  27          {
  28   1      	while (us)
  29   1      	{
  30   2      	  _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
  31   2      	  --us;
  32   2      	}
  33   1      }
  34          
  35          void SYSCLK_Init (void)
  36          {
  37   1         int i;                              // delay counter
  38   1         OSCXCN = 0x67;                      // start external oscillator with
  39   1                                             // 18.432MHz crystal
  40   1         for (i=0; i < 256; i++) ;           // Wait for osc. to start up
  41   1         while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle
  42   1         OSCICN = 0x88;                      // select external oscillator as SYSCLK
  43   1                                             // source and enable missing clock
  44   1                                             // detector
  45   1      //	OSCICN = 0x07;   //interal 16MHZ
  46   1      }
  47          
  48          
  49          void PORT_Init (void)
  50          {
  51   1         XBR0    = 0x07;                     // Enable SMBus, SPI0, and UART0
  52   1         XBR1    = 0x04;					   //P10<---int0
  53   1         XBR2    = 0x40;                     // Enable crossbar and weak pull-ups
  54   1         EMI0CF  = 0x27;
  55   1         EMI0TC  = 0x21;
C51 COMPILER V6.02  MAIN                                                                   08/14/2005 16:24:52 PAGE 2   

  56   1         P74OUT  = 0xFF;
  57   1         P0MDOUT = 0x15;
  58   1      
  59   1         P1MDOUT |= 0x3C;  					//P1.2-P1.5推挽输出
  60   1         P1 &= 0xc3;							//P1.2-P1.5=0
  61   1      }
  62          
  63          void SPI0_Init (void)
  64          {
  65   1         SPI0CFG = 0x07;                     // data sampled on 1st SCK rising edge
  66   1                                             // 8-bit data words
  67   1         SPI0CFG|=0xC0;	//CKPOL =1;
  68   1      
  69   1         SPI0CN = 0x03;                      // Master mode; SPI enabled; flags
  70   1                                             // cleared
  71   1         SPI0CKR = SYSCLK/2/8000000-1;       // SPI clock <= 8MHz (limited by 
  72   1                                             // EEPROM spec.)
  73   1      }
  74          
  75          void Timer0_Init (void)
  76          {
  77   1         	CKCON|=0x8;
  78   1         	TMOD|=0x1;    	//16Bit
  79   1      	Count1ms=10;
  80   1         	TR0 = 0;                         	// STOP Timer0
  81   1         	TH0 = (-SYSCLK/1000) >> 8;    		// set Timer0 to overflow in 1ms
  82   1         	TL0 = -SYSCLK/1000;
  83   1         	TR0 = 1;   	// START Timer0
  84   1         	IE|= 0x2; 
  85   1      }
  86          
  87          
  88          void Timer0_ISR (void) interrupt 1  //1ms
  89          {
  90   1      	TH0 = (-SYSCLK/1000) >> 8;  
  91   1         	TL0 = -SYSCLK/1000;
  92   1      	if (Count1ms) Count1ms--;
  93   1      	if (Count1s) Count1s--;
  94   1      	else
  95   1      	{
  96   2      		Count1s=1000;
  97   2              SaveMotorCount=MotorCount;
  98   2      		MotorCount=0;
  99   2      		SD=SaveMotorCount/2-SetSpeed;
 100   2      		SaveMotorCount*=30;
 101   2      		if (SD)
 102   2      		{
 103   3      			if ((SD>5)||(SD<-5))
 104   3      			iDAC0-=SD*4;
 105   3      			else
 106   3      				iDAC0-=SD;
 107   3      							
 108   3      		    	DAC0=iDAC0;
 109   3      		     
 110   3      			}
 111   2      	}
 112   1      }
 113          
 114          void Int0_ISR (void) interrupt 0  
 115          {
 116   1      	MotorCount++;
 117   1      }
C51 COMPILER V6.02  MAIN                                                                   08/14/2005 16:24:52 PAGE 3   

 118          
 119          void Delay1ms(unsigned char T)
 120          {
 121   1      	Count1ms=T;
 122   1      	while (Count1ms);
 123   1      }
 124          
 125          void Delay1s(unsigned char T)
 126          {
 127   1      	while (T)
 128   1      	{
 129   2      		Delay1ms(200);
 130   2      		Delay1ms(200);
 131   2      		Delay1ms(200);
 132   2      		Delay1ms(200);
 133   2      		Delay1ms(200);
 134   2      		T--;
 135   2      	}
 136   1      }
 137          
 138          void main (void) 
 139          {
 140   1      
 141   1      	WDTCN = 0xde;
 142   1      	WDTCN = 0xad;           //关看门狗
 143   1      	SYSCLK_Init ();         //初始化时钟
 144   1      	Timer0_Init();			//初始化定时器
 145   1      	PORT_Init ();           //初始化IO口
 146   1      	SPI0_Init ();           //初始化SPI0
 147   1      	CPT1CN|=0x80;			//使能比较器1
 148   1      	REF0CN = 0x07;  		//使能片内参考电压
 149   1      	DAC0CN |= 0x80;			//使能DAC0
 150   1      	DAC0H=0;	DAC0L=0;
 151   1      
 152   1      	IT0=1;
 153   1      	IE |= 0x01; 	//使能INT0中断
 154   1      	EA=1;			//开中断
 155   1      
 156   1      	Test7279(0);
 157   1      	TestMotor();
 158   1      }
 159          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    387    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     11    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)