基于51单片机的智能电子秤系统设计(含代码仿真及论文)

#include<reg51.h> #include<intrins.h> #include <ZM.h> #define LCD P0 #define GPIO_KEY P1 sbit price_add1=P1^0; sbit price_reduce1=P1^1; sbit price_add2=P1^2; sbit price_reduce2=P1^3; sbit weight_reduce=P1^4; sbit weigth_clear=P1^5; sbit warning_add=P1^6; sbit warning_reduce=P1^7; sbit EN=P2^0; sbit RW=P2^1; sbit RS=P2^2; sbit CS1=P2^3; sbit CS2=P2^4; sbit BUSY=P0^0; sbit beep=P2^7; sbit ADCS =P3^5; sbit ADDI =P3^7; sbit ADDO =P3^7; sbit ADCLK =P3^6; unsigned char a,i,j,k,ad_data; float press=0.0,press_r=0.0; float warning=2.5; int b; int num=1,num_t=0; float sum=0; float price1=10; float weight_temp=0; void delay(unsigned char a) { unsigned char i,j; for(i=0;i<a;i++) for(j=0;j<100;j++) { ; } } void temer1() interrupt 2 { EX1=0; if(price_add1==0)//涨价按键1按下，单价增长0.5 { while(!price_add1); price1=price1+0.5; } else if(price_add2==0)//涨价按键2按下，单价增长1 { while(!price_add2); price1=price1+1; } else if(price_reduce1==0)//降价按键1按下，单价下降0.5 { while(!price_reduce1); price1=price1-0.5; } else if(price_reduce2==0)//降价按键2按下，单价下降1 { while(!price_reduce2); price1=price1-1; } else if(weight_reduce==0)//去皮按键按下，去除皮重 { while(!weight_reduce); weight_temp=press; } else if(weigth_clear==0)//去皮清零按键按下，清除皮重 { while(!weigth_clear); weight_temp=0; } else if(warning_add==0)//报警值增加按键按下，报警值增加0.5 { while(!warning_add); warning+=0.5; } else if(warning_reduce==0)//报警值减少按键按下，报警值减少0.5 { while(!warning_reduce); warning-=0.5; } delay(100); EX1=1; } void weight_alarm(void) { if(press_r>warning) { beep=0; //则启动报警 } else beep=1; } //采集并返回 unsigned char Adc0832(unsigned char channel) //AD转换，返回结果 { unsigned char j,i=0,ndat=0; unsigned int dat=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;//拉低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) { if(0<ad_data<256) { int vary=ad_data; press=(0.019531*vary); } } void total(float w,float p) { sum=w*p; } unsigned char t1[6]={"000.00"}; void turn(float t_float) { int temp=(int)t_float; t1[0]=temp/100+0X30; t1[1]=(temp%100)/10+0X30; t1[2]=temp%10+0X30; temp=(int)(t_float*100); t1[4]=(temp%100)/10+0X30; t1[5]=temp%10+0X30; } void checkbusy(void) { EN=1; RW=1; RS=0; LCD=0XFF; if(BUSY); } void writecode(unsigned char dat) //写命令 { checkbusy(); EN=1; RW=0; RS=0; LCD=dat; EN=1; EN=0; } void writedata(unsigned char dat) //写数据 { checkbusy(); EN=1; RW=0; RS=1; LCD=dat; EN=1; EN=0; } void displayzifu(unsigned char page,unsigned char lineaddress,int n, unsigned char table[]) { unsigned char temp[16]; if(lineaddress<0X80) { CS1=1; CS2=0; } for(j=0;j<n;j++) { if(lineaddress>=0X80) { CS1=0; CS2=1; lineaddress=lineaddress-0X40; } b=table[j]-0X20; for(k=0;k<16;k++) { temp[k]=ch2[b][k]; } writecode(page); writecode(lineaddress); for(i=0;i<8;i++) { writedata(temp[i]); } writecode(page+1); writecode(lineaddress); for(i=8;i<16;i++) { writedata(temp[i]); } lineaddress+=8; } } void clear(unsigned char page,unsigned char lineaddress,int n, unsigned char table[]) { unsigned char temp[16]; if(lineaddress<0X80) {CS1=1; CS2=0;} for(j=0;j<n;j++) { if(lineaddress>=0X80) { CS1=0; CS2=1; lineaddress=lineaddress-0X40; } b=table[j]-0X20; for(k=0;k<16;k++) {temp[k]=ch2[b][k];} writecode(page); writecode(lineaddress); for(i=0;i<8;i++) { writedata(temp[i]);} writecode(page+1); writecode(lineaddress); for(i=8;i<16;i++) { writedata(temp[i]);} lineaddress+=8; } } void displayhanzi(unsigned char page,unsigned char lineaddress,int n, unsigned char table[][16]) { unsigned char temp[32]; if(lineaddress<0X80) { CS1=1; //left CS2=0; } for(j=0;j<n;j++) { if(lineaddress>=0X80) { CS1=0; //right CS2=1; lineaddress=lineaddress-0X40; } for(k=0;k<16;k++) { temp[k]=table[j][k]; } j+=1; for(k=0;k<16;k++) { temp[16+k]=table[j][k]; } writecode(page); writecode(lineaddress); for(i=0;i<16;i++) { writedata(temp[i]); } writecode(page+1); writecode(lineaddress); for(i=16;i<32;i++) { writedata(temp[i]); } lineaddress+=16; } } void lcdinti() { writecode(0X3f);//显示开关关 writecode(0XC0);//修改显示起始行 writecode(0XB8);//修改页地址，x地址 writecode(0X40);//修改列地址，y地址 } void main() { unsigned char t[3]={'/','K','G'}; char m=':'; EA=1; EX1=1; lcdinti();//LCD初始化 /*LCD清屏*/ clear(0XB8,0X40,16,&table2); clear(0XBa,0X40,16,&table2); clear(0XBc,0X40,16,&table2); clear(0XBe,0X40,16,&table2); displayhanzi(0XB8,0X40,8,&TITLE); /*显示报警值*/ turn(warning); displayzifu(0XB8,0X78,5,&t1[1]); displayzifu(0XB8,0xB0,2,&t[1]); displayhanzi(0XBa,0X40,4,&WEIGHT); displayzifu(0XBa,0X60,1,&m); displayhanzi(0XBc,0X40,4,&PRICE); displayzifu(0XBc,0X60,1,&m); displayhanzi(0XBE,0X40,4,&TOTAL); displayzifu(0XBe,0X60,1,&m); while(1) { /*读取ADC，并显示*/ ad_data =Adc0832(0); //采样值存储单元初始化为0 data_pro(); press_r=press-weight_temp; /*根据ADC数据，判断是否报警*/ weight_alarm(); turn(warning); displayzifu(0XB8,0X78,5,&t1[1]); delay(100); turn(press_r); displayzifu(0XBa,0X68,5,&t1[1]); displayzifu(0xba,0xB0,2,&t[1]); delay(100); /*显示单价*/ turn(price1); displayzifu(0XBc,0X68,6,&t1[0]); displayhanzi(0xbc,0x98,2,&YUAN); displayzifu(0XBc,0XA8,3,&t); delay(100); /*计算总价，并显示*/ total(press_r,price1); turn(sum); displayzifu(0XBe,0X68,6,&t1); displayhanzi(0xbe,0xB0,2,&YUAN); delay(100); } }