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/**************************************************************
實(shí)現(xiàn)功能:電子稱稱重測(cè)試程序
**************************************************************/
#include <reg52.h>
#include <intrins.h>
#include <string.h>
#include "lcd.h"
#include "hx711.h"
//定義量程系數(shù)
#define RATIO 1349/1000 //1574/1000 //2114/1623
//定義標(biāo)識(shí)
volatile bit FlagTest = 0; //定時(shí)測(cè)試標(biāo)志，每0.25秒置位，測(cè)完清0
//管腳定義
sbit LedA = P2^2;
sbit beep = P1^0;
sbit alert = P1^1;
//顯示用變量
int Counter;
uchar idata str1[6] = "000000";
int i, iTemp;
//稱重用變量
unsigned long idata FullScale; //滿量程AD值/1000
unsigned long AdVal; //AD采樣值
unsigned long weight; //重量值，單位g
uchar DotPos; //小數(shù)點(diǎn)標(biāo)志及位置
int bak_num=1;
char code tb3[]="重量: kg";
//整型轉(zhuǎn)字符串的函數(shù)，轉(zhuǎn)換范圍0--65536
void int2str(int x, char* str)
{
int i=1;
int tmp=10;
while(x/tmp!=0)
{
i++;
tmp*=10;
}
tmp=x;
str[i]='\0';
while(i>1)
{
str[--i]='0'+(tmp%10);
tmp/=10;
}
str[0]=tmp+'0';
}
//重新找回零點(diǎn)，每次測(cè)量前調(diào)用
void To_Zero()
{
FullScale=ReadCount()/1000;
}
//顯示重量，單位kg，兩位整數(shù)，三位小數(shù)
void Display_Weight()
{
unsigned int i,j;
display_GB2312_string(3,60," ");
//weight單位是g
i = weight/1000; //得到整數(shù)部分
j = weight - i*1000;//得到小數(shù)部分
int2str(i,str1);
if (i>=10)
{
display_GB2312_string(3,60,str1);
}
else
{
display_GB2312_string(3,68,str1);
}
display_GB2312_string(3,76,".");
int2str(j,str1);
if (j<10)
{
display_GB2312_string(3,84,"00");
display_GB2312_string(3,100,str1);
}
else if (j<100)
{
display_GB2312_string(3,84,"0");
display_GB2312_string(3,92,str1);
}
else
{
display_GB2312_string(3,84,str1);
}
}
//數(shù)據(jù)初始化
void Data_Init()
{
DotPos = 0;
beep = 1;
alert = 1;
}
//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 = 0x06;
TH0 = 0xf8; //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
{
TL0 = 0x06;
TH0 = 0xf8; //定時(shí)器賦予初值
//每0.25秒鐘刷新重量
Counter ++;
if (Counter >=100)
{
FlagTest = 1;
Counter = 0;
}
}
//===============main program===================//
void main(void)
{
Rom_CS=1;
initial_lcd();
EA = 0;
Data_Init();
Timer0_Init();
//初始化完成，開中斷
EA = 1;
//背光
LedA = 1;
clear_screen(); //clear all dots
To_Zero();
To_Zero();
display_GB2312_string(3,1,tb3);
while(1)
{
//每0.5秒稱重一次
//稱重，得到重量值weight，單位為g
AdVal=ReadCount();
weight=FullScale-AdVal/1000;
if (weight>0x8000) weight=0;
weight=15000*weight/FullScale;//校準(zhǔn)值
weight=weight*RATIO;
Display_Weight();
//如果超量程，則報(bào)警
if (weight >= 10000)
{
beep = 0;
alert = 0;
}
//如果不超量程
else
{
beep = 1;
alert = 1;
//顯示重量值
Display_Weight();
FlagTest = 0;
}
delay(80);// 重量的亮度
}
}

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