main.c

一个用51MCU做电流表的产品.源代码.电流精度达到1MA有级别.

/* After is STC additional SFR or change */

/* sfr  AUXR  = 0x8e; */
/* sfr  IPH   = 0xb7; */

/* Watchdog Timer Register */
sfr  WDT_CONTR = 0xe1;    

/* ISP_IAP_EEPROM Register */
sfr ISP_DATA  = 0xe2;
sfr ISP_ADDRH = 0xe3;
sfr ISP_ADDRL = 0xe4;
sfr ISP_CMD   = 0xe5;
sfr ISP_TRIG  = 0xe6;
sfr ISP_CONTR = 0xe7;

/* System Clock Divider */
sfr CLK_DIV  = 0xc7;

/* I_O Port Mode Set Register */
sfr P0M0  = 0x93;
sfr P0M1  = 0x94;
sfr P1M0  = 0x91;
sfr P1M1  = 0x92;
sfr P2M0  = 0x95;
sfr P2M1  = 0x96;
sfr P3M0  = 0xb1;
sfr P3M1  = 0xb2;

/* SPI Register */
sfr SPSTAT  = 0x84;
sfr SPCTL   = 0x85;
sfr SPDAT   = 0x86;

/* ADC Register */
sfr ADC_CONTR  = 0xc5;
sfr ADC_DATA   = 0xc6;
sfr ADC_LOW2   = 0xbe;

/* PCA SFR */
sfr CCON   = 0xD8;
sfr CMOD   = 0xD9;
sfr CCAPM0 = 0xDA;
sfr CCAPM1 = 0xDB;
sfr CCAPM2 = 0xDC;
sfr CCAPM3 = 0xDD;
sfr CCAPM4 = 0xDE;
sfr CCAPM5 = 0xDF;

sfr CL     = 0xE9;
sfr CCAP0L = 0xEA;
sfr CCAP1L = 0xEB;
sfr CCAP2L = 0xEC;
sfr CCAP3L = 0xED;
sfr CCAP4L = 0xEE;
sfr CCAP5L = 0xEF;

sfr CH     = 0xF9;
sfr CCAP0H = 0xFA;
sfr CCAP1H = 0xFB;
sfr CCAP2H = 0xFC;
sfr CCAP3H = 0xFD;
sfr CCAP4H = 0xFE;
sfr CCAP5H = 0xFF;

sfr PCA_PWM0 = 0xF2;
sfr PCA_PWM1 = 0xF3;
sfr PCA_PWM2 = 0xF4;
sfr PCA_PWM3 = 0xF5;
sfr PCA_PWM4 = 0xF6;
sfr PCA_PWM5 = 0xF7;

/*  CCON  */
sbit CF    = CCON^7;
sbit CR    = CCON^6;
sbit CCF5  = CCON^5;
sbit CCF4  = CCON^4;
sbit CCF3  = CCON^3;
sbit CCF2  = CCON^2;
sbit CCF1  = CCON^1;
sbit CCF0  = CCON^0;

/* Above is STC additional SFR or change */

/*--------------------------------------------------------------------------
REG51F.H

Header file for 8xC31/51, 80C51Fx, 80C51Rx+
Copyright (c) 1988-1999 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.

Modification according to DataSheet from April 1999
 - SFR's AUXR and AUXR1 added for 80C51Rx+ derivatives
--------------------------------------------------------------------------*/

/*  BYTE Registers  */
sfr P0   = 0x80;
sfr P1   = 0x90;
sfr P2   = 0xA0;
sfr P3   = 0xB0;
sfr PSW  = 0xD0;
sfr ACC  = 0xE0;
sfr B    = 0xF0;
sfr SP   = 0x81;
sfr DPL  = 0x82;
sfr DPH  = 0x83;
sfr PCON = 0x87;
sfr TCON = 0x88;
sfr TMOD = 0x89;
sfr TL0  = 0x8A;
sfr TL1  = 0x8B;
sfr TH0  = 0x8C;
sfr TH1  = 0x8D;
sfr IE   = 0xA8;
sfr IP   = 0xB8;
sfr SCON = 0x98;
sfr SBUF = 0x99;

/*  80C51Fx/Rx Extensions  */
sfr AUXR   = 0x8E;
/* sfr AUXR1  = 0xA2; */
sfr SADDR  = 0xA9;
sfr IPH    = 0xB7;
sfr SADEN  = 0xB9;
sfr T2CON  = 0xC8;
sfr T2MOD  = 0xC9;
sfr RCAP2L = 0xCA;
sfr RCAP2H = 0xCB;
sfr TL2    = 0xCC;
sfr TH2    = 0xCD;


/*  BIT Registers  */
/*  PSW   */
sbit CY   = PSW^7;
sbit AC   = PSW^6;
sbit F0   = PSW^5;
sbit RS1  = PSW^4;
sbit RS0  = PSW^3;
sbit OV   = PSW^2;
sbit P    = PSW^0;

/*  TCON  */
sbit TF1  = TCON^7;
sbit TR1  = TCON^6;
sbit TF0  = TCON^5;
sbit TR0  = TCON^4;
sbit IE1  = TCON^3;
sbit IT1  = TCON^2;
sbit IE0  = TCON^1;
sbit IT0  = TCON^0;

/*  P3  */
sbit RD   = P3^7;
sbit WR   = P3^6;
sbit T1   = P3^5;
sbit T0   = P3^4;
sbit INT1 = P3^3;
sbit INT0 = P3^2;
sbit TXD  = P3^1;
sbit RXD  = P3^0;

/*  SCON  */
sbit SM0  = SCON^7; // alternatively "FE"
sbit FE   = SCON^7;
sbit SM1  = SCON^6;
sbit SM2  = SCON^5;
sbit REN  = SCON^4;
sbit TB8  = SCON^3;
sbit RB8  = SCON^2;
sbit TI   = SCON^1;
sbit RI   = SCON^0;
             

sbit T2EX = P1^1;
sbit T2   = P1^0;

/*  T2CON  */
sbit TF2   = T2CON^7;
sbit EXF2  = T2CON^6;
sbit RCLK  = T2CON^5;
sbit TCLK  = T2CON^4;
sbit EXEN2 = T2CON^3;
sbit TR2   = T2CON^2;
sbit C_T2  = T2CON^1;
sbit CP_RL2= T2CON^0;

/* PCA Pin */

sbit CEX3 = P2^4;
sbit CEX2 = P2^0;
sbit CEX1 = P3^5;
sbit CEX0 = P3^7;
sbit ECI  = P3^4;

/*  IE   */
sbit EA   = IE^7;
sbit EPCA_LVD  = IE^6;
sbit EADC_SPI  = IE^5;
sbit ES   = IE^4;
sbit ET1  = IE^3;
sbit EX1  = IE^2;
sbit ET0  = IE^1;
sbit EX0  = IE^0;

/*  IP   */ 
sbit PPCA_LVD  = IP^6;
sbit PADC_SPI  = IP^5; 
sbit PS   = IP^4;
sbit PT1  = IP^3;
sbit PX1  = IP^2;
sbit PT0  = IP^1;
sbit PX0  = IP^0;



 ///////////////////////////////start

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
sbit data164 = P1^6;//P2^2;
sbit clk164 = P1^7;//P2^3;
sbit ledcol4 = P1^5;//P1^7;//4
sbit ledcol1 = P1^4;//P1^6;//1
sbit ledcol2 = P1^3;//P1^5;//2
sbit ledcol3 = P1^2;//P1^4;//3
/////
sbit adci_input = P1^0;
sbit adcv_input = P1^1;
////
sbit set_input = P3^5;
///	AD
//  31
sbit adc_cs = P3^7;
sbit adc_sclk = P3^2;
sbit adc_dout = P3^3;
sbit adc_din = P3^4;


//sbit aflag = P2^6;

#define SEG_A 0X01
#define SEG_B 0X02
#define SEG_C 0X04
#define SEG_D 0X08
#define SEG_E 0X10
#define SEG_F 0X20
#define SEG_G 0X40
#define SEG_DP 0X80

#define SHOW_VOL 0
#define refv_data 2502000
#define ad_command 0x31
//#define refh_data 194//130//101//126//117//196
//#define refl_data 12//44//18//51//65//79 

//#define refha_data 11764705
//#define refla_data 882353

code uchar segments[10] =
{
// SEG_A|SEG_B|SEG_C|SEG_D|SEG_E|SEG_F,       //0
//       SEG_B|SEG_C,                         //1
// SEG_A|SEG_B|      SEG_D|SEG_E,             //2
// SEG_A|SEG_B|SEG_C|SEG_D|            SEG_G, //3
//       SEG_B|SEG_C|            SEG_F|SEG_G, //4
// SEG_A|      SEG_C|SEG_D|      SEG_F|SEG_G, //5
// SEG_A|      SEG_C|SEG_D|SEG_E|SEG_F|SEG_G, //6
// SEG_A|SEG_B|SEG_C,                         //7
// SEG_A|SEG_B|SEG_C|SEG_D|SEG_E|SEG_F|SEG_G, //8
// SEG_A|SEG_B|SEG_C|SEG_D|      SEG_F|SEG_G, //9
  0x7d,//0
  0x21,//1
  0xf4,//2
  0xf1,//3
  0xa9,//4
  0xd9,//5
  0xdd,//6
  0x31,//7
  0xfd,//8
  0xf9 //9
};
xdata uchar  show_data[4];
uchar show_count;
//xdata uchar adbuf[10];
xdata uint adfcnt_r[15];
bdata uchar CFLAG;
sbit ad_over_cf = CFLAG^0;
sbit ad_refst_cf = CFLAG^1;
sbit ad_ok_cf = CFLAG^2;
bdata uchar AD_CONTR;		  // 只有AD时才用.
sbit ADC_POWER = AD_CONTR^7;
sbit SPEED1 = AD_CONTR^6;
sbit SPEED0 = AD_CONTR^5;
sbit ADC_FLAG = AD_CONTR^4;
sbit ADC_START = AD_CONTR^3;
sbit CHS2 = AD_CONTR^2;
sbit CHS1 = AD_CONTR^1;
sbit CHS0 = AD_CONTR^0;
///////////////////////////
//uint adf_showcnt;
uchar ref_indata;
uchar ad_indata;
uchar refbuf_cnt;
uchar adbuf_cnt;
uchar refh_data;
uchar refl_data;
uchar sss;
uchar adrfcnt;

uint adfcnt;
uint ad_tmp;
uint ad_data;
uint ad7887_tmp;
uint adr_data;
//ulong long_tmp;
/////////////////////////////////////////函数原形
void send164data(uchar adata);
void selectcol(uchar col);
uchar real2show(uchar areal);
uchar timerover(void);
void show_real(void);
void initsys(void);
void ad_buf(uchar tmp);
/////////////////////
void ad_poweron(void);
//void ad_poweroff(void);
void ad_start(void);
uchar ad_readdata(void);
void ad_setpin(uchar pin);
void ad_show(uint temp);
/////////////////////
void wait(uint tmp);
void ad7887_poweron(void);
void ad7887_readdata(void);

/////////////////////////////////////////////////////////////////////		
void main(void)
{
uint i,j,buf,buf_cnt,y,x,adxtmp,ad_dtmp;//,adref_tmp;
i=0;
j=0;
x=0;
y=0;
buf=0;
buf_cnt=0;
//ulong adref_tmp = 0;
ad_dtmp=0;
///===
  initsys();
  WDT_CONTR = 0x3C;
  while(1)
  {
//==
  while(timerover()==0); 
  WDT_CONTR = 0x3C;

////////////////////////
//ad7887
//while(1)
if(adfcnt>100)
{
ad7887_poweron();
ad7887_readdata();
adfcnt = 0;
adrfcnt ++;
adfcnt_r[adrfcnt]=adr_data;
}

if(adrfcnt>10)
{
adxtmp =  0;
for(i=0;i<10;i++)
{
adxtmp = adfcnt_r[i]+adxtmp;
}
adxtmp=adxtmp/10;
//if(adxtmp-2>ad_data)
//{
//ad_data = adxtmp;
//}
//if(adxtmp+2<ad_data)
//{
//ad_data = adxtmp;
//}
if(adxtmp<40)
{adxtmp = 0;}
ad_data = ((adxtmp*2));//)/10);//+((adxtmp*19)/200);
adrfcnt = 0;
}

  show_real();
  show_data[4] = 0;
  ad_show(ad_data);
//====///////////////////////////
  }
}


/////////////////////////////////////////////////////////////定时兼记录脉冲数
uchar timerover(void)
{
 if (TF0 == 1)
   {
    TF0=0;
	TH0 = 0XD4;
	TL0 = 0x10;//0X46;