ddd.zip_51ddd

#include<reg51.h> #include<INTRINS.H> #define uchar unsigned char #define uint unsigned int #define delaynop() {_nop_();_nop_();_nop_();_nop_();} //小延时 //液晶端口定义 sbit RS=P2^0; sbit RW=P2^1; sbit EN=P2^2; sbit OE=P1^0; sbit P2_5=P2^5; sbit P2_6=P2^6;sbit P2_7=P2^7; //ADC0809端口定义 sbit EOC=P1^1; sbit ST=P1^2; sbit CLK=P1^3; sbit P1_5=P1^5; sbit P1_6=P1^6; sbit P1_7=P1^7 ; uchar str1[]=" Test Voltage "; //显示内容 uchar HMS_string[]="----00.000V-----"; //电压显示 uchar a []=" shuaigehehe " ; void delay(uint x); //液晶显示端口初始化 uchar LCD_Busy_check() { uchar s; RS=0; delaynop(); RW=1; delaynop(); EN=0; delaynop(); EN=1; delaynop(); s=(bit)(P0&0x80); delaynop(); EN=0; delaynop(); return(s); } //液晶显示端口写命令 void LCD_write_command(uchar cmd) {while(LCD_Busy_check()); delay(10); RS=0; delaynop(); RW=0; delaynop(); EN=0; delaynop(); _nop_(); _nop_(); EN=1; delaynop(); P0=cmd; delaynop(); EN=0; delaynop(); } void LCD_set_pos(uchar m) {LCD_write_command(0x80|m); } //写数据 void LCD_write_Data(uchar dat) {while(LCD_Busy_check()); delay(10); RS=1; delaynop(); RW=0; delaynop(); EN=0; delaynop(); _nop_(); _nop_(); delaynop(); EN=1; delaynop(); P0=dat;delaynop(); EN=0; delaynop(); } //延时 void delay(uint x) {uchar i; while(x--) for(i=0;i<40;i++); } //液晶显示屏幕调节 void LCD_Initialize() {LCD_write_command(0x38); LCD_write_command(0x0c); LCD_write_command(0x06); LCD_write_command(0x01); } void Display_string(uchar *str,uchar lineNo) {uchar k; LCD_set_pos(lineNo); for(k=0;k<16;k++) LCD_write_Data(str[k]); } //中断 void T0_int() interrupt 1 {CLK=!CLK; } //显示内容及显示地方 void Display_HMS(long d) { if(P1_7==1) { d=d*40000/51; HMS_string[9]=d%100000%10000%1000%100/10+'0'; HMS_string[8]=d%100000%10000%1000/100+'0'; HMS_string[7]=d%100000%10000/1000+'0'; HMS_string[5]=d%100000/10000+'0'; HMS_string[4]=d/100000+'0';} if(P1_6==1 ) { d=d*20000/51; HMS_string[9]=d%100000%10000%1000%100/10+'0'; HMS_string[8]=d%100000%10000%1000/100+'0'; HMS_string[7]=d%100000%10000/1000+'0'; HMS_string[5]=d%100000/10000+'0'; HMS_string[4]=d/100000+'0';} if(P1_5==1) { d=d*10000/51; HMS_string[9]=d%100000%10000%1000%100/10+'0'; HMS_string[8]=d%100000%10000%1000/100+'0'; HMS_string[7]=d%100000%10000/1000+'0'; HMS_string[5]=d%100000/10000+'0'; HMS_string[4]=d/100000+'0';} Display_string(HMS_string,0x40); } // 主函数 void main() {long i,j; TMOD=0x02; TH0=20; TL0=20; EA=1; ET0=1; LCD_Initialize(); Display_string(str1,0x00); TR0=1; P1=0x0f; P2=0x00; while(1) {ST=0;ST=1;ST=0; while(EOC==0); OE=1; i=P3; Display_HMS(i); OE=0; } }