#include <intrins.h>
#include <reg52.h>
#include <stdio.h>
#define ulong unsigned long
#define uint unsigned int
#define uchar unsigned char
uchar k,i,j;
float l;
sbit sw=P3^0; //159选通开关
sbit ADCS =P3^1; //ADC0832 chip seclect
sbit ADDI =P3^3; //ADC0832 k in
sbit ADDO =P3^3; //ADC0832 k out
sbit ADCLK =P3^2; //ADC0832 clock signal
uchar dsw[20]; //存放sprintf转换字符
uchar idata value[149]; //点阵字符储存
uchar code table[]={ //字符查表
0x00,0x00,0x00,0x30,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*".",0*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*"0",1*/
0x00,0x00,0x10,0x20,0x10,0x20,0xF8,0x3F,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,/*"1",2*/
0x00,0x00,0x70,0x30,0x08,0x28,0x08,0x24,0x08,0x22,0x88,0x21,0x70,0x30,0x00,0x00,/*"2",3*/
0x00,0x00,0x30,0x18,0x08,0x20,0x88,0x20,0x88,0x20,0x48,0x11,0x30,0x0E,0x00,0x00,/*"3",4*/
0x00,0x00,0x00,0x07,0xC0,0x04,0x20,0x24,0x10,0x24,0xF8,0x3F,0x00,0x24,0x00,0x00,/*"4",5*/
0x00,0x00,0xF8,0x19,0x08,0x21,0x88,0x20,0x88,0x20,0x08,0x11,0x08,0x0E,0x00,0x00,/*"5",6*/
0x00,0x00,0xE0,0x0F,0x10,0x11,0x88,0x20,0x88,0x20,0x18,0x11,0x00,0x0E,0x00,0x00,/*"6",7*/
0x00,0x00,0x38,0x00,0x08,0x00,0x08,0x3F,0xC8,0x00,0x38,0x00,0x08,0x00,0x00,0x00,/*"7",8*/
0x00,0x00,0x70,0x1C,0x88,0x22,0x08,0x21,0x08,0x21,0x88,0x22,0x70,0x1C,0x00,0x00,/*"8",9*/
0x00,0x00,0xE0,0x00,0x10,0x31,0x08,0x22,0x08,0x22,0x10,0x11,0xE0,0x0F,0x00,0x00,/*"9",10*/
0x08,0x00,0x78,0x00,0x88,0x07,0x00,0x38,0x00,0x0E,0xC8,0x01,0x38,0x00,0x08,0x00,/*"V",11*/
};
void delay(int c) //延时,C不能小于5
{
int i,j;
for(i=0;i<c;i++)
for(j=0;j<10;j++)
;
}
/************
读ADC0832函数
************/
//采集并返回
unsigned int Adc0832(unsigned char channel) //AD转换,返回结果
{
uchar i=0;
uchar j;
uint dat=0;
uchar ndat=0;
if(channel==0)channel=2;
if(channel==1)channel=3;
ADDI=1;
_nop_();
_nop_();
ADCS=0;//拉低CS端
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿1
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=channel&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿2
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=(channel>>1)&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿3
ADDI=1;//控制命令结束
_nop_();
_nop_();
dat=0;
for(i=0;i<8;i++)
{
dat|=ADDO;//收数据
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次时钟脉冲
_nop_();
_nop_();
dat<<=1;
if(i==7)dat|=ADDO;
}
for(i=0;i<8;i++)
{
j=0;
j=j|ADDO;//收数据
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次时钟脉冲
_nop_();
_nop_();
j=j<<7;
ndat=ndat|j;
if(i<7)ndat>>=1;
}
ADCS=1;//拉低CS端
ADCLK=0;//拉低CLK端
ADDO=1;//拉高数据端,回到初始状态
dat<<=8;
dat|=ndat;
return(dat); //return ad k
}
/*************************************************
点阵字符采集函数
**************************************************/
void tra(uchar *p) //数组dsp[]里面的字符查询后,再储储存到另一个显示数组value[]
{ for(i=0;i<5;i++)
{
if(i<4) //i=2时查的是句号,其他3个是电压值
{
for(j=0;j<16;j++)
{
value[(i+1)*16+j]=table[(*p-0x2e)*16+j];
}
}
else
{ for(j=0;j<16;j++) //电压符号V
value[(i+1)*16+j]=table[12*16+j];
}
p++;
}
for(i=0;i<16;i++) //前16个和后21个消隐作用,不显示
value[i]=0;
for(i=128;i<149;i++)
value[i]=0;
}
void main()
{
unsigned int b=0,i,j;
unsigned char a;
while(1)
{
k=Adc0832(0); //AD转换结果
l=k/255.0*5.0;
sprintf(dsw,"%2.3f",l); //电压值转换成字符方式储存,不明白的人上百度查一下sprintf函数的运用就清楚的,俺也是查的
tra(dsw);
j=0;
if(a>2) //移动间隔时间;越大移动越慢
{
a=0;
b+=2;
if(b>=85) //显示到最后一个字,回头显示
{
b=0;
}
}
sw=1; //显示字符,顺序是从左扫到右,有16列,数据电平是从左1到左16,由低到高
for(i=0;i<16;i++) //sw是154选通开关。
{
P1=i;
P0=value[j+b];
P2=value[j+b+1];
delay(5);
P0=0x00;
P2=0x00;
j+=2;
}
sw=0;
for(i=0;i<16;i++)
{
P1=i;
P0=value[j+b];
P2=value[j+b+1];
delay(5);
P0=0x00;
P2=0x00;
j+=2;
}
a++;
}
}
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