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#include<regx51.h>
#include<intrins.h>
#include<absacc.h>
#include<math.h>
#define uchar unsigned char
#define uint unsigned int
#define addo (5.0/65535.0)
uchar vol[]="Voltage:";//定義串口通信的電壓提示語
uchar cur[]="Current:";//定義串口通信的電流提示語
uchar pf[]="Power Factor:";//定義串口通信的功率因數(shù)提示語
uchar num[10]={'0','1','2','3','4','5','6','7','8','9'};//定義串口通信的數(shù)字字符查表傳送
sbit DIN = P2^0;
sbit CS = P2^1;
sbit CLK = P2^2;
sbit SDO = P2^3;
sbit SCK = P2^4;
sbit CONV = P2^5;
sbit SDI=P2^6;
uint High,Low;
sbit K=P3^2;
bit choose=1;//定義A/D轉(zhuǎn)換器通道選擇變量
double t=0;
static unsigned char disbuf[8] = {1,2,3,4,5,6,7,8};//數(shù)碼管顯示緩沖數(shù)據(jù)
/*延時函數(shù)*/
void delay_ms(uint n)
{
uchar i;
while(n--)
{
for(i=0;i<100;i++);
}
}
/*定時器T0初始化 */
void Init_T0()
{
TMOD=0x09;
TH0=0;
TL0=0;
}
/*數(shù)碼管進行顯示*/
void WriteByte(uchar dat)
{
uchar i;
for(i=0;i<8;i++)
{
DIN = ((dat<<i)&0x80)?1:0;
CLK = 0;
_nop_();
CLK = 1;
_nop_();
}
}
void MAX7221_WRITE(uchar addr,uchar dat)
{
CS = 0;
WriteByte(addr);
WriteByte(dat);
CS = 1;
}
void MAX7221_Initial(void)
{
MAX7221_WRITE(0x0A,0x07);
MAX7221_WRITE(0x0B,0x07);
MAX7221_WRITE(0x0C,0x01);
MAX7221_WRITE(0x0F,0x00);
MAX7221_WRITE(0x09,0xff);
}
void display(uchar *str)
{
uchar i;
for(i=0;i<8;i++)
{
MAX7221_WRITE(i+1,str[i]);
}
}
/*A/D轉(zhuǎn)換讀取轉(zhuǎn)換值*/
uint LTC1864_READ(void)
{
uchar i;
uint temp = 0;
CONV = 0;
CONV = 1;
_nop_();_nop_();_nop_();
CONV = 0;
SDO = 1;
for(i=0;i<16;i++)
{
SCK = 1;
_nop_();
SCK = 0;
_nop_();
if(i==0)
{
SDI=1;
}
if(i==1)
{
choose= !choose;
SDI=choose;
}
temp <<= 1;
if(SDO==1)
{
temp |= 0x0001;
}
}
CONV = 1;
return temp;
}
/*電流值進行數(shù)碼管轉(zhuǎn)換顯示*/
void HEXTOBCD_I(uint temp)
{
disbuf[0] = temp/10000;
disbuf[1] = (temp%10000/1000)|0x80;
disbuf[2] = temp%1000/100;
disbuf[3] = temp%100/10;
disbuf[4] = temp%10;
disbuf[5] = 15;
disbuf[6] = 15;
disbuf[7] = 1;
}
/*電壓值進行數(shù)碼管轉(zhuǎn)換顯示*/
void HEXTOBCD_V(uint temp)
{
disbuf[0] = temp/10000;
disbuf[1] = temp%10000/1000;
disbuf[2] = (temp%1000/100)|0x80;
disbuf[3] = temp%100/10;
disbuf[4] = temp%10;
disbuf[5] = 15;
disbuf[6] = 15;
disbuf[7] = 2;
}
/*定時器T1初始化*/
void Time_T1(void)
{
TMOD=0x10;
TL1=0xb0;
TH1=0x3c;
IE=0x88;
TR1=1;
}
void delay_choose(int t)
{
Time_T1();
while(t--)
{
while(!TF1);
TF1=0;
TL1=0x3c;
TH1=0X88;
}
}
/*讀取相位差方波正脈沖寬度*/
void Message_Width()
{
while(K);
TR0=1;
while(!K);
while(K);
TR0=0;
High=TH0;
Low=TL0;
}
/*串口初始化波特率為9600*/
void UART_init(void)
{
SCON = 0x50;//串口方式1
TMOD = 0x20;// 定時器使用方式2自動重載
TH1 = 0xFD;//9600波特率對應(yīng)的預(yù)設(shè)數(shù)，定時器方式2下，TH1=TL1
TL1 = 0xFD;
TR1 = 1;//開啟定時器，開始產(chǎn)生波特率
}
/*發(fā)送一個字符*/
void UART_send_byte(uchar dat)
{
SBUF = dat;
while (TI == 0);
TI = 0;
}
/*發(fā)送一個字符串*/
void UART_send_string(uchar *buf)
{
while (*buf != '\0')
{
UART_send_byte(*buf++);
}
}
/*電流顯示及發(fā)送*/
void dianliu()
{
uchar vol_value[7];//定義串口通信數(shù)據(jù)緩沖數(shù)組
uint I;
I=(int)(t*30500);
HEXTOBCD_I(I);
display(disbuf);
delay_ms(10);
/*串口通信逐一發(fā)送電流值*/
UART_init();
UART_send_string(cur);
vol_value[0]=num[disbuf[0]%16];
UART_send_byte(vol_value[0]);
vol_value[1]=num[disbuf[1]%16];
UART_send_byte(vol_value[1]);
UART_send_byte(0x2E);
vol_value[2]=num[disbuf[2]%16];
UART_send_byte(vol_value[2]);
vol_value[3]=num[disbuf[3]%16];
UART_send_byte(vol_value[3]);
vol_value[4]=num[disbuf[4]%16];
UART_send_byte(vol_value[4]);
UART_send_byte(0x41);
UART_send_byte(0x0d);
UART_send_byte(0x0a);
}
/*電壓顯示及發(fā)送*/
void dianya()
{
int I;
uchar vol_value[7];//定義串口通信數(shù)據(jù)緩沖數(shù)組
I=(int)(t*5866);
HEXTOBCD_V(I);
display(disbuf);
delay_ms(10);
/*串口通信逐一發(fā)送電壓值*/
UART_init();
UART_send_string(vol);
vol_value[0]=num[disbuf[0]%16];
UART_send_byte(vol_value[0]);
vol_value[1]=num[disbuf[1]%16];
UART_send_byte(vol_value[1]);
vol_value[2]=num[disbuf[2]%16];
UART_send_byte(vol_value[2]);
UART_send_byte(0x2E);
vol_value[3]=num[disbuf[3]%16];
UART_send_byte(vol_value[3]);
vol_value[4]=num[disbuf[4]%16];
UART_send_byte(vol_value[4]);
UART_send_byte(0x56);
UART_send_byte(0x0d);
UART_send_byte(0x0a);
}
/*串口通信發(fā)送功率因數(shù)*/
void send_P()
{
uchar vol_value[7];//定義串口通信數(shù)據(jù)緩沖數(shù)組
uint X1,I;
double t=0;
Init_T0();
Message_Width();
X1=(High*256+TL0)/0.92;
t=(X1+t)/2;
/*串口通信逐一發(fā)送功率因數(shù)*/
t=t*0.000314;
I=abs(cos(t-0.147)*1000);
UART_init();
UART_send_string(pf);
vol_value[0]=num[I/1000];
UART_send_byte(vol_value[0]);
UART_send_byte(0x2E);
vol_value[0]=num[I%1000/100];
UART_send_byte(vol_value[0]);
vol_value[0]=num[I%100/10];
UART_send_byte(vol_value[0]);
vol_value[0]=num[I%10];
UART_send_byte(vol_value[0]);
UART_send_byte(0x0d);
UART_send_byte(0x0a);
UART_send_byte(0x0d);
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………

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