數(shù)控可調(diào)直流穩(wěn)壓電源程序

ID:139093 · 發(fā)表于 2016-11-14 21:04

#include "reg52.h"

//宏定義
#define uchar unsigned char
#define uint  unsigned int

//按鍵定義
sbit KEY1= P2^0;
sbit KEY2= P2^1;
sbit KEY3= P2^2;
sbit KEY4= P2^3;

//數(shù)碼管定義
sbit W4= P2^4;
sbit W3= P2^5;
sbit W2= P2^6;
sbit W1= P2^7;

//DAC定義
sbit  CS_5615=P3^2;
sbit CLK_5615=P3^3;
sbit DAT_5615=P3^4;

//報警指示定義
sbit led = P3^6;
sbit Duan= P3^7;

uint  U;
uchar flag=0;
uint  a=0;

uchar code table[]=
{
      0xc0,/*0*/
      0xf9,/*1*/
      0xa4,/*2*/
      0xb0,/*3*/
      0x99,/*4*/
      0x92,/*5*/
      0x82,/*6*/
      0xf8,/*7*/
      0x80,/*8*/
      0x90,/*9*/
}; //共陽數(shù)碼管段碼表沒有小數(shù)點 0~9
uchar code table1[]=
{

      0x40,/*0*/
      0x79,/*1*/
      0x24,/*2*/
      0x30,/*3*/
      0x19,/*4*/
      0x12,/*5*/
      0x02,/*6*/
      0x78,/*7*/
      0x00,/*8*/
      0x10,/*9*/
      0xe3 /*U*/
};//帶小數(shù)點的編碼    0~9

void delay_ms(uint z)    //延時函數(shù)
{
  uint a,b;
  for(a=z;a>0;a--)
for(b=5;b>0;b--);
}

void  shuma(uint buf)
{
uchar a,b,c,d;
a=buf/1000;
b=buf%1000/100;
c=buf%100/10;
d=buf%10;

W2=W3=W4=1; W1=0;
P0=table[a];
delay_ms(60);

W1=W3=W4=1; W2=0;
P0=table1[b];
delay_ms(60);

W1=W2=W4=1; W3=0;
P0=table[c];
delay_ms(60);

W1=W2=W3=1; W4=0;
P0=table1[d];
delay_ms(60);
}

void tlc_5615(uint buf)
{
uint a,c;
c=buf;
CS_5615=0;
for(a=16;a>0;a--)
{
      DAT_5615=c>>15;
      c=c<<1;
      CLK_5615=1;
      CLK_5615=0;
}
CLK_5615=1;
CLK_5615=0;
CLK_5615=1;
CLK_5615=0;
CS_5615=1;
}

//主函數(shù)
void main(void)
{
uchar n,i;
n=5;
U=0;
led=0;
delay_ms(3000);
led=1;
while(1)
{
tlc_5615(U);
shuma(U/n*10);
if(flag==0)
{
if(KEY1==0)
{
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
if(KEY1==0)
{
if(U<120*n)    //最大電壓
U=U+n;
else if(U>=120*n)
{
led=0;
for(i=0;i<50;i++)
shuma(U/n*10);
led=1;
}

}
}
if(KEY2==0)
{
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
if(KEY2==0)
{
if(U>=n)
U=U-n;
}
}
if(KEY3==0)
{
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
if(KEY3==0)
{
U=50*n;
}
}
if(KEY4==0)
{
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
shuma(U/n*10);
if(KEY4==0)
{
U=0;
}
}
}
if(Duan==0)
{
delay_ms(10);
if(Duan==0)
{
flag=1; //過流標(biāo)志置高
led=0;
U=0;
tlc_5615(0);
}
}
}
}