实用电子称-单片机课设

#include<reg51.h> #include<intrins.h> #include <absacc.h> #include <math.h> #include<lm4229.h> #define uchar unsigned char #define uint unsigned int sbit ADCS =P3^5; sbit ADDI =P3^7; sbit ADDO =P3^7; sbit ADCLK =P3^6; uint x1,y1,z1=0,w1; uchar ad_data,k,n,m,e,num,s; //采样值存储 uint temp1; sbit beep =P3^0; char press_data; //标度变换存储单元 float press; unsigned char ad_alarm,temp; //报警值存储单元 unsigned char abc[5]={48,46,48,48,48}; unsigned char price_all[5]={48,48,46,48,48}; unsigned char price_all0[10]={48,48,46,48,48,' ',' ',' ',' ',}; float price_unit[10]={5.5,2.8,3.6,4.5,5.8,6.8,7.9,8.0,9.5,0}; //商品初始单价 uchar price_danjia[9]={48,46,48,48,' ',' ',' ',' ',}; float price; uint price_temp1,price_temp2; uint price_temp3=0; //商品总价 uchar Adc0832(unsigned char channel); void alarm(void); void data_pro(void); void delay(uint k); void keyscan(); void price_jisuan(); void price_jisuan1(); void price1(); /************ 主函数 ************/ void main(void) { delay(500); //系统延时500ms启动 //ad_data=0; //采样值存储单元初始化为0 lcd_init(); //显示初始化 write_lcd(0,8,"欢迎使用电子秤"); while(1) { ad_data =Adc0832(0); //采样值存储单元初始化为0 alarm(); data_pro(); //读取重量 keyscan(); //查询商品种类 write_lcd(40,0,"------------------------------"); write_lcd(56,0,"单价:"); write_lcd(56,11,price_danjia); write_lcd(56,20,"元/千克"); write_lcd(72,0,"重量:"); write_lcd(72,11,abc); write_lcd(72,20,"千克"); write_lcd(88,0,"价格:"); //计算出价格 write_lcd(88,10,price_all); write_lcd(88,20,"元"); write_lcd(104,0,"总价:"); //计算出价格 write_lcd(104,10,price_all0); write_lcd(104,20,"元"); } } /************ 读ADC0832函数 ************/ //采集并返回 uchar Adc0832(unsigned char channel) //AD转换，返回结果 { 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;//控制命令结束 _nop_(); _nop_(); dat=0; for(i=0;i<8;i++) { dat|=ADDO;//收数据 ADCLK=1; _nop_(); _nop_(); ADCLK=0;//形成一次时钟脉冲 _nop_(); _nop_(); dat<<=1; if(i==7)dat|=ADDO; } for(i=0;i<8;i++) { j=0; j=j|ADDO;//收数据 ADCLK=1; _nop_(); _nop_(); ADCLK=0;//形成一次时钟脉冲 _nop_(); _nop_(); j=j<<7; ndat=ndat|j; if(i<7)ndat>>=1; } ADCS=1;//拉搞CS端 ADCLK=0;//拉低CLK端 ADDO=1;//拉高数据端,回到初始状态 dat<<=8; dat|=ndat; return(dat); //return ad k } void data_pro(void) { unsigned int; if(0<ad_data<256) { int vary=ad_data; press=(0.019531*vary); temp1=(int)(press*1000); //放大1000倍，便于后面的计算 abc[0]=temp1/1000+48; //取压力值百位 abc[1]=46; abc[2]=(temp1%1000)/100+48; //取压力值十位 abc[3]=((temp1%1000)%100)/10+48; //取压力值个位 abc[4]=((temp1%1000)%100)%10+48; //取压力值十分位 } } /*****************报警子函数*******************/ void alarm(void) { int i; if(ad_data>=255) {for(i=0;i<100;i++) { beep = ~beep; delay(3); } } //则启动报警 else beep=1; } void delay(uint k) { uint i,j; for(i=0;i<k;i++) for(j=0;j<100;j++); } //键盘服务程序 void keyscan() { P1=0xfe; temp=P1; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; switch(temp) { case 0xee:num=1,price=price_unit[0], write_lcd(24,0,"名称:杏仁");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0xde:num=2,price=price_unit[1],write_lcd(24,0,"名称:李子");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0xbe:num=3,price=price_unit[2],write_lcd(24,0,"名称:草莓");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0x7e:num=4,price=price_unit[3],write_lcd(24,0,"名称:葡萄");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; } while(temp!=0xf0) { temp=P1; temp=temp&0xf0; } } } P1=0xfd; temp=P1; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; switch(temp) { case 0xed:num=5,price=price_unit[4],write_lcd(24,0,"名称:西瓜");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0xdd:num=6,price=price_unit[5],write_lcd(24,0,"名称:苹果");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0xbd:num=7,price=price_unit[6],write_lcd(24,0,"名称:雪梨");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0x7d:num=8,price=price_unit[7],write_lcd(24,0,"名称:核桃");price1();price_jisuan(); price_temp3=price_temp3+price_temp2;price_jisuan1(); break; } while(temp!=0xf0) { temp=P1; temp=temp&0xf0; } } } P1=0xfb; temp=P1; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; switch(temp) { case 0xeb:num=9,price=price_unit[8],write_lcd(24,0,"名称:香蕉");price1();price_jisuan();price_temp3=price_temp3+price_temp2;price_jisuan1(); break; case 0xdb:num=10,price=price_unit[9],write_lcd(24,0,"名称:商品");price1();price_jisuan();price_temp3=0;price_jisuan1(); break; case 0xbb:num=11,price=price_unit[1];price1();price_jisuan();//price_jisuan1(); break; case 0x7b:num=12,price=price_unit[2];price1();price_jisuan();//price_jisuan1(); break; } while(temp!=0xf0) { temp=P1; temp=temp&0xf0; } } } P1=0xf7; temp=P1; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; switch(temp) { case 0xe7:num=13,price=price_unit[3];price1();price_jisuan();price_temp3=price_temp2;price_jisuan1(); break; case 0xd7:num=14,price=price_unit[4];price1();price_jisuan();price_temp3=price_temp2;price_jisuan1(); break; case 0xb7:num=15,price=price_unit[5];price1();price_jisuan();price_temp3=price_temp2;price_jisuan1(); break; case 0x77:num=16,price=price_unit[6];price1();price_jisuan();price_temp3=price_temp2;price_jisuan