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#include <reg52.h>
#include <intrins.h>
#include <string.h>
bit bdata flag_key;
#include "main.h"
#include "LCD1602.h"
#include "HX711.h"
#include "keyboard.h"
#include "eeprom52.h"
#define uchar unsigned char
#define uint unsigned int
unsigned long HX711_Buffer = 0;
unsigned long Weight_Maopi = 0;
unsigned long Weight_Maopi_0 = 0;
unsigned int qupi=0;
long Weight_Shiwu = 0;
//鍵盤處理變量
unsigned char keycode;
unsigned char DotPos; //小數(shù)點(diǎn)標(biāo)志及位置
uint GapValue,GapValue1;
unsigned char idata price; //單價(jià)，長整型值，單位為分
unsigned char idata money; //總價(jià)，長整型值，單位為分
//定義標(biāo)識
volatile bit FlagTest = 0; //定時(shí)測試標(biāo)志，每0.5秒置位，測完清0
volatile bit FlagKeyPress = 0; //有鍵按下標(biāo)志，處理完畢清0
//校準(zhǔn)參數(shù)
//因?yàn)椴煌膫鞲衅魈匦郧€不是很一致，因此，每一個(gè)傳感器需要矯正這里這個(gè)參數(shù)才能使測量值很準(zhǔn)確。
//當(dāng)發(fā)現(xiàn)測試出來的重量偏大時(shí)，增加該數(shù)值。
//如果測試出來的重量偏小時(shí)，減小改數(shù)值。
//該值可以為小數(shù)
//#define GapValue 349
sbit LED=P1^1;
volatile bit ClearWeighFlag = 0; //傳感器調(diào)零標(biāo)志位，清除0漂
/******************把數(shù)據(jù)保存到單片機(jī)內(nèi)部eeprom中******************/
void write_eeprom()
{
SectorErase(0x1000);
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(jī)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(jī)自檢eeprom初始化*****************/
void init_eeprom()
{
read_eeprom(); //先讀
if(a_a != 1) //新的單片機(jī)初始單片機(jī)內(nèi)問eeprom
{
GapValue = 3500;
a_a = 1;
write_eeprom(); //保存數(shù)據(jù)
}
}
//顯示單價(jià)，單位為元，四位整數(shù)，兩位小數(shù)
void Display_Price()
{
LCD1602_write_com(0x8c);
LCD1602_write_data(price/100 + 0x30);
LCD1602_write_data(price%100/10 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(price%10 + 0x30);
}
//顯示重量，單位kg，兩位整數(shù)，三位小數(shù)
void Display_Weight()
{
LCD1602_write_com(0x83);
LCD1602_write_data(Weight_Shiwu/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);
}
//顯示總價(jià)，單位為元，四位整數(shù)，兩位小數(shù)
void Display_Money()
{
// unsigned int i,j;
if (money>9999) //超出顯示量程
{
LCD1602_write_com(0x80+0x40+6);
LCD1602_write_word("---.-");
return;
}
if (money>=1000)
{
LCD1602_write_com(0x80+0x40+6);
LCD1602_write_data(money/1000 + 0x30);
LCD1602_write_data(money%1000/100 + 0x30);
LCD1602_write_data(money%100/10 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(money%10 + 0x30);
}
else if (money>=100)
{
LCD1602_write_com(0x80+0x40+6);
LCD1602_write_data(0x20);
LCD1602_write_data(money%1000/100 + 0x30);
LCD1602_write_data(money%100/10 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(money%10 + 0x30);
}
else if(money>=10)
{
LCD1602_write_com(0x80+0x40+6);
LCD1602_write_data(0x20);
LCD1602_write_com(0x80+0x40+7);
LCD1602_write_data(0x20);
LCD1602_write_data(money%100/10 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(money%10+ 0x30);
}
else
{
LCD1602_write_com(0x80+0x40+6);
LCD1602_write_data(0x20);
LCD1602_write_com(0x80+0x40+7);
LCD1602_write_data(0x20);
LCD1602_write_com(0x80+0x40+8);
LCD1602_write_data(0 + 0x30);
LCD1602_write_data('.');
LCD1602_write_data(money%10 + 0x30);
}
}
//數(shù)據(jù)初始化
void Data_Init()
{
price = 0;
DotPos = 0;
}
//定時(shí)器0初始化
void Timer0_Init()
{
ET0 = 1; //允許定時(shí)器0中斷
TMOD = 1; //定時(shí)器工作方式選擇
TL0 = 0xb0;
TH0 = 0x3c; //定時(shí)器賦予初值
TR0 = 1; //啟動(dòng)定時(shí)器
}
//定時(shí)器0中斷
void Timer0_ISR (void) interrupt 1 using 0
{
uchar Counter;
TL0 = 0xb0;
TH0 = 0x3c; //定時(shí)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(yīng)程序，參數(shù)是鍵值
//返回鍵值：
// 1 2 3 10 //10:清零重量，兼去皮功能
// 4 5 6 11 //11:清除單價(jià)
// 7 8 9 12 //12:顯示數(shù)值偏大調(diào)節(jié)按鍵
// 14 0 15 13 //14:無功能（用于擴(kuò)展）15：小數(shù)點(diǎn) 13：顯示數(shù)值偏小調(diào)節(jié)按鍵
void KeyPress(uchar keycode)
{
switch (keycode)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9: //目前在設(shè)置整數(shù)位，要注意price是整型，存儲(chǔ)單位為分
if (DotPos == 0)
{ //最多只能設(shè)置到千位
if (price<100)
{
price=price*10+keycode*10;
}
}//目前在設(shè)置小數(shù)位
else if (DotPos==1) //小數(shù)點(diǎn)后第一位
{
price=price+keycode;
DotPos=2;
}
Display_Price();
break;
case 10: //去皮鍵
if(qupi==0)
qupi=Weight_Shiwu;
else
qupi=0;
Display_Price();
// FlagSetPrice = 0;
DotPos = 0;
break;
case 11: //刪除鍵
price=0;
DotPos=0;
Display_Price();
break;
case 12: //加
if(GapValue<10000)
GapValue++;
break;
case 13: //減
if(GapValue>1)
GapValue--;
break;
case 15: //小數(shù)點(diǎn)按下
DotPos = 1; //小數(shù)點(diǎn)后第一位
break;
}
}
//****************************************************
//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;
Data_Init();
Timer0_Init();
//初中始化完成，開斷
EA = 1;
// Get_Maopi();
LCD1602_write_com(0x80); //指針設(shè)置
LCD1602_write_word(" Welcome To Use "); //
LCD1602_write_com(0x80+0x40); //指針設(shè)置
LCD1602_write_word("Electronic Scale");
// Delay_ms(2000);
Get_Maopi();
LCD1602_write_com(0x80); //指針設(shè)置
LCD1602_write_word("WE:0.000 PR:00.0");
LCD1602_write_com(0x80+0x40); //指針設(shè)置
LCD1602_write_word("MONEY: 0.00 ");
Display_Price();
// Get_Maopi(); //稱毛皮重量
while(1)
{
//每0.5秒稱重一次
if (FlagTest==1)
{
Get_Weight();
FlagTest = 0;
}
keycode = Getkeyboard();
//有效鍵值0-15
if (keycode<16)
{
KeyPress(keycode);
Buzzer=0;
Delay_ms(100);
Buzzer=1;
while(keycode<16)
{
if(keycode==12||keycode==13)
{
Buzzer=0;
Delay_ms(10);
Buzzer=1;
KeyPress(keycode);
Get_Weight();
flag_key=1;
}
keycode = Getkeyboard();
}
write_eeprom(); //保存數(shù)據(jù)
}
}
}
//****************************************************
//稱重
//****************************************************
void Get_Weight()
{
Weight_Shiwu = HX711_Read();
Weight_Shiwu = Weight_Shiwu - Weight_Maopi; //獲取凈重
Weight_Shiwu = (unsigned int)((float)Weight_Shiwu*10/GapValue)-qupi; //計(jì)算實(shí)物的實(shí)際重量
if(Weight_Shiwu > 10000) //超重報(bào)警
{
Buzzer = !Buzzer;
LED=!LED;
LCD1602_write_com(0x83);
LCD1602_write_word("-.---");
}
else
{
if(Weight_Shiwu==0)
LED=1;
else if(Weight_Shiwu>0)
LED=0;
Buzzer = 1;
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