电子秤比赛项目 （附带源码）

基本要求and制作过程：

 

#include<reg52.h>
#include<intrins.h>
#include <absacc.h>
#include <math.h>
#define uchar unsigned char
#define uint  unsigned int
#define ulong unsigned long
sbit rs=P0^5;	    
sbit rw=P0^6;	      
sbit e =P0^7;
sbit hx711_dout=P3^3; 
sbit hx711_sck =P3^4; 
uint weight;	
void delayms(uint z)
{
	uchar i,j;
	for(i=z;i>0;i--)
		for(j=114;j>0;j--);
}
void write_com(uchar com)
{
	rs=0;
	P2=com;
	delayms(1);
	e=1;
	delayms(1);
	e=0;
}
void write_data(uchar date)
{
	rs=1;
	P2=date;
	delayms(1);
	e=1;
	delayms(1);
	e=0;	
}
void write_string(uchar line,uchar add,uchar *p)
{
	if(line==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
	while(1)														 
	{
		if(*p == '\0')  break;
		write_data(*p);
		p++;
	}	
}
void init_1602()	 
{
	rw=0;
	write_com(0x38);	
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01);
	delayms(1);
}
unsigned long ReadCount(void)
{
	unsigned long Count;
	unsigned char i;
    hx711_sck=0; 
		Count=0;
		while(hx711_dout);
		for(i=0;i<24;i++)
		{
			hx711_sck=1;
			Count=Count<<1;
			hx711_sck=0;
			if(hx711_dout)
				Count++;
		}
		hx711_sck=1;
		Count=Count^0x800000;
		hx711_sck=0;
		Count=Count/100;
		return(Count);
}
void show()
{
		uint y;
		y=ReadCount();
		weight=(uint)
		((float)(y/(4.3/8.8*128*(2^24)/4.3/100)+50)*10)-50050;
		write_com(0x80+7);
		write_data(weight/10000+0x30);
		write_data((weight%10000)/1000+0x30);
		write_data(((weight%10000)%1000)/100+0x30);
		write_data((((weight%10000)%1000)%100)/10+0x30);
		write_com(0x80+12);
		write_data((((weight%10000)%1000)%100)%10+0x30);
}
void main()
{	
	delayms(50);					 
	init_1602();		            
	write_string(1,0," Weight     .  g");
	while(1)
	{
		show();
		delayms(200);
		if(weight>=50000)
		{
			write_string(2,0,"      WARNING!");
		}
		if(weight<50000)
		{
			write_string(2,0,"5am           ");
		}
	}
}

实际的去皮操作需要更加细节谨慎，此项目斩获三等奖，尚有许多不足之处可以改进，以后虚心学习，慢慢进步。