基于单片机的数显电子称

#include<reg51.h> #include<intrins.h> #include <absacc.h> #include <math.h> #define uchar unsigned char #define uint unsigned int #define BUSY 0x80 //常量定义 #define DATAPORT P0 //ADC0832的引脚 sbit ADCS =P3^5; //ADC0832 chip seclect sbit ADDI =P3^7; //ADC0832 k in sbit ADDO =P3^7; //ADC0832 k out sbit ADCLK =P3^6; //ADC0832 clock signal sbit LCM_RS=P2^0; sbit LCM_RW=P2^1; sbit LCM_EN=P2^2; uchar ad_data,key; uchar rrr=0xff; uchar alldata[12]={0}; uchar love[14]; uchar exit=0,yes=0,kind=0,fu=0,pfu=0,position1=0,position2=0; unsigned long data1=0,data2=0,data3=0,ddata=0; //采样值存储 sbit Alarm_led_red =P3^0; //超过重量表量程最大值红色led报警定义 sbit Alarm_led_green=P3^1; //低于零表量程最小值绿色led报警定义 //adc采样值存储单元 char press_data; //标度变换存储单元 unsigned char ad_alarm; //报警值存储单元 unsigned char press_ge=0; //显示值百位 unsigned char press_shifen=0; //显示值十位 unsigned char press_baifen=0; //显示值个位 unsigned char press_qianfen=0; //显示值十分位 uchar code str0[]={"Weight: . Kg "}; uchar code str2[]={"Price: "}; uchar code str3[]={"Total: "}; void delay(uint); void lcd_wait(void); void delay_LCM(uint); //LCD延时子程序 void initLCM( void); //LCD初始化子程序 void lcd_wait(void); //LCD检测忙子程序 void WriteCommandLCM(uchar WCLCM,uchar BusyC); //写指令到ICM子函数 void WriteDataLCM(uchar WDLCM); //写数据到LCM子函数 void DisplayOneChar(uchar X,uchar Y,uchar DData); //显示指定坐标的一个字符子函数 void DisplayListChar(uchar X,uchar Y,uchar code *DData); //显示指定坐标的一串字符子函数 void error(void); unsigned long shi(uchar k); void out(void); uchar keyscan(void); void display(void); void display(uchar); void keydisplay(uchar); void prodis(void); void clear(void); void datapc(void); void remove0(void); void data3dis(void); //系统显示子函数 uchar Adc0832(unsigned char channel); void alarm(void); void data_pro(void); /**********main funcation************/ 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 initLCM( ); WriteCommandLCM(0x01,1); //清显示屏 DisplayListChar(0,0,str0); // WriteCommandLCM(0x01,0); //???????? DisplayListChar(0,1,str2); while(1) { ad_data =Adc0832(0); //采样值存储单元初始化为0 alarm(); data_pro(); display(); key=keyscan(); delay(5); if(exit==1) keydisplay(key); } } /*********延时K*1ms,12.000Mhz**********/ void delay(uint k) { uint i,j; for(i=0;i<k;i++) for(j=0;j<60;j++); } /**********写指令到ICM子函数************/ void WriteCommandLCM(uchar WCLCM,uchar BusyC) { if(BusyC) lcd_wait(); DATAPORT=WCLCM; LCM_RS=0; // 选中指令寄存器 LCM_RW=0; // 写模式 LCM_EN=1; _nop_(); _nop_(); _nop_(); LCM_EN=0; } /**********写数据到LCM子函数************/ void WriteDataLCM(uchar WDLCM) { lcd_wait( ); //检测忙信号 DATAPORT=WDLCM; LCM_RS=1; // 选中数据寄存器 LCM_RW=0; // 写模式 LCM_EN=1; _nop_(); _nop_(); _nop_(); LCM_EN=0; } /***********lcm内部等待函数*************/ void lcd_wait(void) { DATAPORT=0xff; //读LCD前若单片机输出低电平,而读出LCD为高电平,则冲突,Proteus仿真会有显示逻辑黄色 LCM_EN=1; LCM_RS=0; LCM_RW=1; _nop_(); _nop_(); _nop_(); while(DATAPORT&BUSY) { LCM_EN=0; _nop_(); _nop_(); LCM_EN=1; _nop_(); _nop_(); } LCM_EN=0; } /**********LCM初始化子函数***********/ void initLCM( ) { DATAPORT=0; delay(15); WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号 delay(5); WriteCommandLCM(0x38,0); delay(5); WriteCommandLCM(0x38,0); delay(5); WriteCommandLCM(0x38,1); //8bit数据传送，2行显示，5*7字型，检测忙信号 WriteCommandLCM(0x08,1); //关闭显示，检测忙信号 WriteCommandLCM(0x01,1); //清屏，检测忙信号 WriteCommandLCM(0x06,1); //显示光标右移设置，检测忙信号 WriteCommandLCM(0x0c,1); //显示屏打开，光标不显示，不闪烁，检测忙信号 } /****显示指定坐标的一个字符子函数****/ void DisplayOneChar(uchar X,uchar Y,uchar DData) { Y&=0x01; X&=0x0f; if(Y)X|=0x40; //若y为1（显示第二行），地址码+0X40 X|=0x80; //指令码为地址码+0X80 WriteCommandLCM(X,1); WriteDataLCM(DData); } /*******显示指定坐标的一串字符子函数*****/ void DisplayListChar(uchar X,uchar Y,uchar code *DData) { uchar ListLength=0; Y&=0x01; X&=0x0f; while(X<16) { DisplayOneChar(X,Y,DData[ListLength]); ListLength++; X++; } } void error(void) { uchar derror[8]={'E','R','R','O','R','!','!','!'}; uchar k; for(k=0;k<=7;k++) { WriteCommandLCM(0xc8+k,0); WriteDataLCM(derror[k]); DisplayOneChar(7,1,derror[k]); delay(5); } } void out(void) { uchar k; uchar dout[12]={'O','U','T',' ','O','F',' ','R','A','N','G','E'}; for(k=0;k<=11;k++) { WriteCommandLCM(0xc4+k,0); WriteDataLCM(dout[k]); DisplayOneChar(7,1,dout[k]); delay(5); } } unsigned long shi(uchar n) { int m=1; while(n!=0) { m=m*10; n--; } return(m); } /*键盘扫描子程序*/ uchar keyscan() { uchar i=0,j=0; P1=0xf0; if(((~P1) & 0xf0)!=0) { delay(10); if(((~P1) & 0xf0)!=0) { exit=1; P1=0xfe; while(((~P1) & 0x0f)!=0) { if(((~P1) & 0xf0)!=0) { switch((~P1) & 0xf0) { case 0x10: j=0;break; case 0x20: j=1;break; case 0x40: j=2;break; case 0x80: j=3;break; } return(4*i+j); } else { P1=P1<<1; i++; } } } } exit=0; return(key); } /*****************系统显示子函数*****************/ void display(void) { WriteCommandLCM(0x0c,1); //显示屏打开，光标不显示，不闪烁，检测忙信号 DisplayListChar(0,0,str0); DisplayListChar(0,1,str2); DisplayOneChar(8,0,press_ge+0x30); DisplayOneChar(10,0,press_shifen+0x30); DisplayOneChar(11,0,press_baifen+0x30); DisplayOneChar(12,0,press_qianfen+0x30); delay(1000); //稳定显示 } /**********************************键盘显示子函数**********************************/ void keydisplay(uchar C) { WriteCommandLCM(0x0c,1); DisplayListChar(0,1,str2); switch(C) { case 0:clear(); break; case 1:prodis(); alldata[rrr]=0; WriteDataLCM('0'); break; case 2:prodis(); WriteDataLCM('='); kind=kind+10; position2=rrr; datapc(); remove0(); data3dis(); break; case 3:prodis(); kind=kind+1; //加法运算， kind=1 position1=rrr; WriteDataLCM('+'); break; case 4:prodis(); alldata[rrr]=1; WriteDataLCM('1'); break; case 5:prodis(); alldata[rrr]=2; WriteDataLCM('2'); break; case 6:prodis(); alldata[rrr]=3; WriteDataLCM('3'); break; case 7:prodis(); kind=kind+5; //减法运算， kind=5