单片机+LM2596数控稳压电源源程序 -

#include"reg52.h"
#include<stdio.h>
#include <intrins.h>
typedef unsigned char uchar;
typedef unsigned int uint;
#define LCD_Data P0
#define Busy 0x80 //用于检测LCD状态字中的Busy标识
sbit ADC0832_CLK = P1^5;
sbit ADC0832_DODI = P1^6;
sbit ADC0832_CS = P1^7;
sbit LCD_RS=P2^7;//定义引脚
sbit LCD_RW=P2^6;
sbit LCD_E=P2^5;
float volts,amps;
//5ms延时
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
while(TempCyc--);
}
//400ms延时
void Delay400Ms(void)
{
unsigned char TempCycA = 5;
unsigned int TempCycB;
while(TempCycA--)
{
TempCycB=7269;
while(TempCycB--);
};
}
//读状态
unsigned char ReadStatusLCD(void)
{
LCD_Data = 0xFF;
LCD_RS = 0;
LCD_RW = 1;
LCD_E = 0;
LCD_E = 0;
LCD_E = 1;
while (LCD_Data & Busy); //检测忙信号
return(LCD_Data);
}
//写数据
void WriteDataLCD(unsigned char WDLCD)
{
ReadStatusLCD(); //检测忙
LCD_Data = WDLCD;
LCD_RS = 1;
LCD_RW = 0;
LCD_E = 0; //若晶振速度太高可以在这后加小的延时
LCD_E = 0; //延时
LCD_E = 1;
}
//写指令
void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测
{
if (BuysC) ReadStatusLCD(); //根据需要检测忙
LCD_Data = WCLCD;
LCD_RS = 0;
LCD_RW = 0;
LCD_E = 0;
LCD_E = 0;
LCD_E = 1;
}
//读数据
unsigned char ReadDataLCD(void)
{
LCD_RS = 1;
LCD_RW = 1;
LCD_E = 0;
LCD_E = 0;
LCD_E = 1;
return(LCD_Data);
}
void LCDInit(void) //LCM初始化
{
LCD_Data = 0;
WriteCommandLCD(0x38,0); //三次显示模式设置，不检测忙信号
Delay5Ms();
WriteCommandLCD(0x38,0);
Delay5Ms();
WriteCommandLCD(0x38,0);
Delay5Ms();
WriteCommandLCD(0x38,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCD(0x08,1); //关闭显示
WriteCommandLCD(0x01,1); //显示清屏
WriteCommandLCD(0x06,1); // 显示光标移动设置
WriteCommandLCD(0x0C,1); // 显示开及光标设置
}
//按指定位置显示一个字符
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1
if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
X |= 0x80; // 算出指令码
WriteCommandLCD(X, 0); //这里不检测忙信号，发送地址码
WriteDataLCD(DData);
}
//按指定位置显示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
{
unsigned char ListLength;
ListLength = 0;
Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1
while (DData[ListLength]>=0x20) //若到达字串尾则退出
{
if (X <= 0xF) //X坐标应小于0xF
{
DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
ListLength++;
X++;
}
}
}
//读取ADC0832转换值函数
//入口函数：channel选择通道
uchar ADC0832_Read(uchar channel)
{
uchar i = 0;
uchar tmp = 0; //高字节数据
uchar tmp1 = 0; //低字节数据
//开始标志位
ADC0832_DODI = 1;
_nop_(); _nop_();
ADC0832_CS = 0; //片选信号
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
//选择通道
switch(channel)
{
case 0: //通道0
ADC0832_DODI = 1; //SGL = 1；
_nop_(); _nop_();
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
ADC0832_DODI = 0; //ODD = 0;
_nop_(); _nop_();
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
break;
case 1: //通道1
ADC0832_DODI = 1; //SGL = 1；
_nop_(); _nop_();
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
ADC0832_DODI = 1; //ODD = 1;
_nop_(); _nop_();
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
break;
default:
break;
}
ADC0832_DODI = 1;
_nop_(); _nop_();
//读取8位转换数值
for(i=0;i<8;i++)
{
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
if(ADC0832_DODI)
{
tmp |= 0x01;
}
else
{
tmp &= 0xfe;
}
if(i<7)
{
tmp <<= 1;
}
}
tmp1 = tmp & 0x01;
tmp1 <<= 6;
for(i=0;i<7;i++)
{
ADC0832_CLK = 1;
_nop_(); _nop_();
ADC0832_CLK = 0;
_nop_(); _nop_();
if(ADC0832_DODI)
{
tmp1 |= 0x80;
}
else
{
tmp1 &= 0x7f;
}
if(i<6)
{
tmp1 >>= 1;
}
}
ADC0832_CS = 1;
if(tmp == tmp1) //当高字节与低字节相同时，该值有效
{
return tmp; //返回数值
}
}
void DisPlayValue(uint volts,uint amps)
{
DisplayOneChar(0,0,'U');
DisplayOneChar(1,0,'=');
if(volts/10000 == 0)
{
DisplayOneChar(2,0,'0' + (volts/1000%10));
DisplayOneChar(3,0,'.');
DisplayOneChar(4,0,'0' + (volts/100%10));
DisplayOneChar(5,0,'0' + (volts/10%10));
DisplayOneChar(6,0,'0' + (volts%10));
DisplayOneChar(7,0,' ');
DisplayOneChar(8,0,'V');
DisplayOneChar(9,0,' ');
}
else
{
DisplayOneChar(2,0,'0' + (volts/10000));
DisplayOneChar(3,0,'0' + (volts/1000%10));
DisplayOneChar(4,0,'.');
DisplayOneChar(5,0,'0' + (volts/100%10));
DisplayOneChar(6,0,'0' + (volts/10%10));
DisplayOneChar(7,0,'0' + (volts%10));
DisplayOneChar(8,0,' ');
DisplayOneChar(9,0,'V');
}
DisplayOneChar(0,1,'I');
DisplayOneChar(1,1,'=');
DisplayOneChar(2,1,'0' + (amps/1000));
DisplayOneChar(3,1,'.');
DisplayOneChar(4,1,'0' + (amps/100%10));
DisplayOneChar(5,1,'0' + (amps/10%10));
DisplayOneChar(6,1,'0' + (amps/1%10));
DisplayOneChar(7,1,' ');
DisplayOneChar(8,1,'A');
}
void GetValue(void)
{
uchar tmp,i;
uint ntmp;
for(i=0;i<10;i++)
{
tmp = ADC0832_Read(0);
ntmp += tmp;
}
volts = (ntmp/10)*0.1137*1000;
Delay5Ms();
ntmp = 0;
for(i=0;i<20;i++)
{
tmp = ADC0832_Read(1);
ntmp += tmp;
}
amps = (ntmp/20)*0.0196*1000;
Delay5Ms();
DisPlayValue(volts,amps);
}
void main(void)
{
Delay400Ms(); //启动等待，等LCD讲入工作状态
LCDInit(); //LCM初始化
Delay5Ms(); //延时片刻(可不要)
ReadDataLCD();//测试用句无意义
while(1)
{
GetValue();
}
}

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