#include <reg52.h>
#include <intrins.h>
#include <string.h>
#include "main.h"
#include "eeprom52.h"
#define uchar unsigned char
#define uint unsigned int
unsigned char ad_data,k,n,m,e,num,s;
sbit ADCS =P1^4;
sbit ADDI =P1^2;
sbit ADDO =P1^2;
sbit ADCLK =P1^3;
unsigned long Weight_Maopi = 0;
unsigned long Weight_Maopi_0 = 0;
long Weight_Shiwu = 0;
unsigned int qupi=0;
//鍵盤處理變量
unsigned char keycode;
unsigned char key_press_num=0;
uint GapValue,GapValue1;
#define LCD1602_PORT P0
sbit LCD1602_RS = P2^5;
sbit LCD1602_RW = P2^6;
sbit LCD1602_EN = P2^7;
//定義標識
volatile bit FlagTest = 0; //定時測試標志,每0.5秒置位,測完清0
volatile bit FlagKeyPress = 0; //有鍵按下標志,處理完畢清0
//校準參數(shù)
//因為不同的傳感器特性曲線不是很一致,因此,每一個傳感器需要矯正這里這個參數(shù)才能使測量值很準確。
//當發(fā)現(xiàn)測試出來的重量偏大時,增加該數(shù)值。
//如果測試出來的重量偏小時,減小改數(shù)值。
//該值可以為小數(shù)
//#define GapValue 349
sbit LED=P1^1;
sbit ROW1=P3^0;
sbit ROW2=P3^1;
sbit ROW3=P3^2;
sbit ROW4=P3^3;
volatile bit ClearWeighFlag = 0; //傳感器調(diào)零標志位,清除0漂
void LCD1602_delay_ms(unsigned int n)
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<123;j++);
}
//****************************************************
//寫指令
//****************************************************
void LCD1602_write_com(unsigned char com)
{
LCD1602_RS = 0;
LCD1602_delay_ms(1);
LCD1602_EN = 1;
LCD1602_PORT = com;
LCD1602_delay_ms(1);
LCD1602_EN = 0;
}
//****************************************************
//寫數(shù)據(jù)
//****************************************************
void LCD1602_write_data(unsigned char dat)
{
LCD1602_RS = 1;
LCD1602_delay_ms(1);
LCD1602_PORT = dat;
LCD1602_EN = 1;
LCD1602_delay_ms(1);
LCD1602_EN = 0;
}
//****************************************************
//連續(xù)寫字符
//****************************************************
void LCD1602_write_word(unsigned char *s)
{
while(*s>0)
{
LCD1602_write_data(*s);
s++;
}
}
void Init_LCD1602()
{
LCD1602_EN = 0;
LCD1602_RW = 0; //設置為寫狀態(tài)
LCD1602_write_com(0x38); //顯示模式設定
LCD1602_write_com(0x0c); //開關(guān)顯示、光標有無設置、光標閃爍設置
LCD1602_write_com(0x06); //寫一個字符后指針加一
LCD1602_write_com(0x01); //清屏指令
}
/******************把數(shù)據(jù)保存到單片機內(nèi)部eeprom中******************/
void write_eeprom()
{
SectorErase(0x2000);
GapValue1=GapValue&0x00ff;
byte_write(0x2000, GapValue1);
GapValue1=(GapValue&0xff00)>>8;
byte_write(0x2001, GapValue1);
byte_write(0x2060, a_a);
}
/******************把數(shù)據(jù)從單片機內(nèi)部eeprom中讀出來*****************/
void read_eeprom()
{
GapValue = byte_read(0x2001);
GapValue = (GapValue<<8)|byte_read(0x2000);
a_a = byte_read(0x2060);
}
/**************開機自檢eeprom初始化*****************/
void init_eeprom()
{
read_eeprom(); //先讀
if(a_a != 1) //新的單片機初始單片機內(nèi)問eeprom
{
GapValue = 3500;
a_a = 1;
write_eeprom(); //保存數(shù)據(jù)
}
}
//顯示重量,單位kg,兩位整數(shù),三位小數(shù)
void Display_Weight()
{
LCD1602_write_com(0x80+0x40+8);
if(Weight_Shiwu/10000==0)
LCD1602_write_data(' ');
else
LCD1602_write_data(Weight_Shiwu/10000 + 0x30);
LCD1602_write_data(Weight_Shiwu%10000/1000 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(Weight_Shiwu%1000/100 + 0x30);
LCD1602_write_data(Weight_Shiwu%100/10 + 0x30);
LCD1602_write_data(Weight_Shiwu%10 + 0x30);
}
//定時器0初始化
void Timer0_Init()
{
ET0 = 1; //允許定時器0中斷
TMOD = 1; //定時器工作方式選擇
TL0 = 0xb0;
TH0 = 0x3c; //定時器賦予初值
TR0 = 1; //啟動定時器
}
//定時器0中斷
void Timer0_ISR (void) interrupt 1 using 0
{
uchar Counter;
TL0 = 0xb0;
TH0 = 0x3c; //定時器賦予初值
//每0.5秒鐘刷新重量
Counter ++;
if (Counter >= 10)
{
FlagTest = 1;
Counter = 0;
}
}
//按鍵響應程序,參數(shù)是鍵值
//返回鍵值:
// 7 8 9 10(清0)
// 4 5 6 11(刪除)
// 1 2 3 12(未定義)
// 14(未定義) 0 15(.) 13(確定價格)
void KeyPress()
{
if(ROW1==0) //去皮鍵
{
Delay_ms(5);
if(ROW1==0)
{
// Get_Maopi();
if(qupi==0)
qupi=Weight_Shiwu;
else
qupi=0;
Buzzer=0;
Delay_ms(50);
Buzzer=1;
while(ROW1==0);
}
}
if(ROW2==0) //加
{
Delay_ms(5);
if(ROW2==0)
{
while(!ROW2)
{
key_press_num++;
if(key_press_num>=100)
{
key_press_num=0;
while(!ROW2)
{
if(GapValue<10000)
GapValue+=10;
Buzzer=0;
Delay_ms(10);
Buzzer=1;
Delay_ms(10);
Get_Weight();
}
}
Delay_ms(10);
}
if(key_press_num!=0)
{
key_press_num=0;
if(GapValue<10000)
GapValue++;
Buzzer=0;
Delay_ms(50);
Buzzer=1;
}
write_eeprom();
}
}
if(ROW3==0) //減
{
Delay_ms(5);
if(ROW3==0)
{
while(!ROW3)
{
key_press_num++;
if(key_press_num>=100)
{
key_press_num=0;
while(!ROW3)
{
if(GapValue>1)
GapValue-=10;
Buzzer=0;
Delay_ms(10);
Buzzer=1;
Delay_ms(10);
Get_Weight();
}
}
Delay_ms(10);
}
if(key_press_num!=0)
{
key_press_num=0;
if(GapValue>1)
GapValue--;
Buzzer=0;
Delay_ms(50);
Buzzer=1;
}
write_eeprom(); //保存數(shù)?
}
}
}
uchar Adc0832(unsigned char channel) //AD轉(zhuǎn)換,返回結(jié)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;//控制命令結(jié)束
_nop_();
_nop_();
dat=0;
for(i=0;i<8;i++)
{
dat|=ADDO;//收數(shù)據(jù)
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時鐘脈沖
_nop_();
_nop_();
dat<<=1;
if(i==7)dat|=ADDO;
}
for(i=0;i<8;i++)
{
j=0;
j=j|ADDO;//收數(shù)據(jù)
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時鐘脈沖
_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;//拉高數(shù)據(jù)端,回到初始狀態(tài)
dat<<=8;
dat|=ndat;
return(dat); //return ad k
}
//****************************************************
//主函數(shù)
//****************************************************
void main()
{
init_eeprom(); //開始初始化保存的數(shù)據(jù)
Init_LCD1602(); //初始化LCD1602
EA = 0;
Timer0_Init();
//初中始化完成,開斷
EA = 1;
// Get_Maopi();
LCD1602_write_com(0x80); //指針設置
LCD1602_write_word(" Welcome To Use "); //
LCD1602_write_com(0x80+0x40); //指針設置
LCD1602_write_word("Electronic Scale");
// Delay_ms(2000);
Get_Maopi();
LCD1602_write_com(0x80); //指針設置
LCD1602_write_word("The Weight: ");
LCD1602_write_com(0x80+0x40); //指針設置
LCD1602_write_word(" 0.000kg");
// Get_Maopi(); //稱毛皮重量
while(1)
{
//每0.5秒稱重一次
if (FlagTest==1)
{
Get_Weight();
FlagTest = 0;
}
KeyPress();
}
}
//****************************************************
//稱重
//****************************************************
void Get_Weight()
{
Weight_Shiwu = Adc0832(0);
Weight_Shiwu = Weight_Shiwu - Weight_Maopi; //獲取凈重
Weight_Shiwu = (unsigned int)((float)(Weight_Shiwu*10)/GapValue)-qupi; //計算實物的實際重量
if(Weight_Shiwu >= 10000) //超重報警
{
Buzzer = !Buzzer;
LED=!LED;
LCD1602_write_com(0x80+0x40+8);
LCD1602_write_word("--.---");
}
else
{
if(Weight_Shiwu==0)
LED=0;
else if(Weight_Shiwu>0)
LED=1;
Buzzer = 1;
Display_Weight();
}
}
//****************************************************
//獲取毛皮重量
//****************************************************
void Get_Maopi()
{
unsigned char clear;
mm: Weight_Maopi_0 = Adc0832(0);
for(clear=0;clear<10;clear++)
{
Buzzer=1;
LED=0;
Delay_ms(100);
LED=1;
Delay_ms(100);
}
Weight_Maopi = Adc0832(0);
if(Weight_Maopi/GapValue!=Weight_Maopi_0/GapValue)
goto mm;
Buzzer=0;
Delay_ms(500);
Buzzer=1;
}
//****************************************************
//MS延時函數(shù)(12M晶振下測試)
//****************************************************
void Delay_ms(unsigned int n)
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<121;j++);
}
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