ADC0809+STC89C52程序.doc

ADC0809+STC89C52/* 将模拟信号转换为数字信号，并用数码管显示转换的 16进制数电路连接图附后页*/#include#include#define uchar unsigned char#define uint unsigned intsbit start=P30; /AD开始信号，与ALE连接在一起用sbit eoc=P32;sbit oe=P31;sbit clk=P33;sbit p15=P15;sbit p16=P16;sbit p17=P17;uchar code table=0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6,0x01;display(uchar,uchar,uchar);/uchar disp_buffer=0,1;/void delayms(uint x)/ / uint i,j; /for(i=x;i0;i-) / for(j=110;j0;j-);/void control(uchar num1,uchar num2) uint i; uchar s,j; s=num1; for(i=6;i0;i-) p17=0; p15=s%2; s=s/2; p17=1; j=num2;for(i=8;i0;i-) p17=0; p15=j%2; j=j/2; p17=1;p16=1;p16=0;/*/void disply(uchar v1,uchar v2,uchar v3) control(0xfe,tablev1); control(0xfd,tablev2); control(0xfb,tablev3);void init()/产生500khz信号TMOD=0x01;TH0=(65536-1)/256;TL0=(65536-1)%256;/取余EA=1;TR0=1;ET0=1;void main()/uchar temp;uchar a1,a2,a3,adval;init();start=0;oe=0;/P2=0xff;while(1)start=0;start=1;start=0;/while(eoc=0);oe=1;adval=P0;/读入转换的数字量oe=0;/disp_buffer0=temp4;/disp_buffer1=temp&0X0F;/delayms(1); disply(a1,a2,a3);/delayms(1); a1=adval/100; a2=adval%100/10; a3=adval%10;void timer() interrupt 1TH0=(65536-1)/256;TL0=(65536-1)%256;clk=clk;DAC0809花样程序/* 将模拟信号转换为数字信号，并用数码管显示转换的 16进制数*/#include#include#define uchar unsigned char#define uint unsigned intsbit start=P30; /AD开始信号，与ALE连接在一起用sbit eoc=P32;sbit oe=P31;sbit clk=P33;uchar code zfs=0x02;sbit p15=P15;sbit p16=P16;sbit p17=P17;uchar code table=0xfd,0x61,0xdb,0xf3,0x67,0xb7,0xbf,0xe1,0xff,0xf7,0x02;display(uchar,uchar,uchar);/uchar disp_buffer=0,1;void delayms(uint x) uint i,j; for(i=x;i0;i-) for(j=30;j0;j-);void control(uchar num1,uchar num2) uint i; uchar s,j; s=num1; for(i=6;i0;i-) p17=0; p15=s%2; s=s/2; p17=1; j=num2;for(i=8;i0;i-) p17=0; p15=j%2; j=j/2; p17=1;p16=1;p16=0;/*/void disply(uchar v1,uchar v2,uchar v3,uchar k1,uchar k2,uchar k3) control(0xfe,zfsk1); control(0xfd,tablev1); control(0xfb,tablev2); control(0xf7,tablev3); control(0xef,zfsk2); control(0xdf,zfsk3); void init()/产生500khz信号TMOD=0x01;TH0=(65536-1)/256;TL0=(65536-1)%256;/取余EA=1;TR0=1;ET0=1;void main()/uchar temp;uchar a1,a2,a3,a4,a5,a6,adval;init();start=0;oe=0;/P2=0xff;while(1)start=0;start=1;start=0;/while(eoc=0);oe=1;adval=P0;/读入转换的数字量oe=0;/disp_buffer0=temp4;/disp_buffer1=temp&0X0F;/delayms(1); disply(a1,a2,a3,a4,a5,a6);/dela