XIAOMA.rar_单片机C语言

#include <reg51.h> #include <intrins.h> sbit rs=P3^0; //指令和数据寄存器// sbit rw=P3^1; //读写控制// sbit e=P3^2; //片选// /*sbit SCLK = P1^0; // 输入输出时钟I/O CLK sbit SDOUT = P1^1; // 数据输出DATA OUT sbit CS = P1^2; // 片选信号 */ sbit flag=P0^7; unsigned char str[]="the AD result is:"; unsigned char display[4] ; //...........液晶现实开始.......... void wait(unsigned int w) { int time; for (time=0;time <w;time++); return; } void busy() { while(1) { P0=0xff; rs=0; rw=1; e=1; if(!flag) break; } } void w_dat(unsigned char dat) //写数据// { busy( ); rs=1; rw=0; e=1; P0=dat; e=0; return; } void w_com(unsigned char com) //写指令// { busy( ); rs=0; rw=0; e=1; P0=com; e=0; } void LCD_set_xy(unsigned char x,unsigned char y) { unsigned char address; if(x == 1) address =0X80 + y; else address = 0XC0 + y; w_com(address); } void LCD_write_string(unsigned char x,unsigned char y,unsigned char *s) { LCD_set_xy(x,y); while(*s) { P0 = *s; w_dat(*s); s++; } } void init(void) { unsigned char i; for (i=0;i<2;i++) { w_com(0x38); wait(10); } w_com(0x38); w_com(0x0f); w_com(0x18); w_com(0x06); w_com(0x01); w_com(0x80); } //..........液晶现实模块结束........ /* //.........AD转换模块开始......... signed char Conversion(void)// AD转换程序，返回AD值 { char i,n; unsigned int Bit16_data; CS=0; //低电平有效，开始转换 for(i=0;i<6;i++) //延时 { _nop_(); SCLK=0; _nop_(); SCLK=1; } if(SDOUT==0) { n=17; while(n--) { _nop_(); SCLK = 1; { Bit16_data = Bit16_data<<1; // 左移一位，或_crol_(temp,1) if(SDOUT == 1) Bit16_data = Bit16_data|0x0001; // 若接收到的位为1，则数据的最后一位置1 else Bit16_data = Bit16_data&0xFFFE; // 否则数据的最后一位置0 } SCLK=0; } CS=1; return(Bit16_data); } } void Display(unsigned char x) { bit s = 0 ; unsigned char AD ; if ( x < 0 ) { s = 1; AD = -1 * x ; } else { s=0 ; AD = x ; } if (s == 1 ) display[4] = 0x2d ; else display[3] = 0x20 ; display[2]= AD/100+0x30; // AD= AD%100+0x30; display[1] = AD/10+0x30; // display[0] = AD%10+0x30; if ( display[2] == 0) display[2] = 0x20 ; LCD_set_xy(2,1) ; lcd_writedat(display[3]); LCD_set_xy(2,2) ; lcd_writedat(display[2]); LCD_set_xy(2,3) ; lcd_writedat(display[1]); LCD_set_xy(2,4) ; lcd_writedat(0x2e); LCD_set_xy(2,5) ; lcd_writedat(display[0]); } void lcd_writedat(uchar dat) { while(busy()); rs = 1; rw = 0; e = 0; P0 = dat; _nop_(); _nop_(); e = 1; _nop_(); _nop_(); e= 0; } //.........AD转换模块结束.......... */ //........主函数开始........... void main(void) { signed char ADresult; init(); LCD_write_string(1,0,str); /* ADresult=Conversion(); wait(5); while(1) { ADresult=Conversion(); if (b1S == 1) { Display(ADresult) ; } } */ }