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//风速程序： #include<reg51.h> #include<intrins.h> #include <absacc.h> #include <math.h> #define uchar unsigned char #define uint unsigned int #define BUSY 0x80 #define DATAPORT P1 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; //1602使能 sbit LCM_RW=P2^1; //1602使能 sbit LCM_EN=P2^2; //1602使能 uchar ad_data; uchar v_data; unsigned char v_bai; unsigned char v_shi; unsigned char v_ge; uchar code str0[]={"Fs: m/s"}; void delay(uint); void lcd_wait(void); void delay_LCM(uint); void initLCM( void); void lcd_wait(void); void WriteCommandLCM(uchar WCLCM,uchar BusyC); void WriteDataLCM(uchar WDLCM); void DisplayOneChar(uchar X,uchar Y,uchar DData); void DisplayListChar(uchar X,uchar Y,uchar code *DData); void display(void); uchar Adc0832(unsigned char channel); void data_pro(void); /**********main funcation************/ void main(void) { delay(500); ad_data=0; initLCM( ); WriteCommandLCM(0x01,1); DisplayListChar(0,0,str0); while(1) { ad_data =Adc0832(0); data_pro(); display(); } } /*********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LCM子函数************/ void WriteCommandLCM(uchar WCLCM,uchar BusyC) { if(BusyC)lcd_wait(); DATAPORT=WCLCM; LCM_RS=0; LCM_RW=0; LCM_EN=1; _nop_(); _nop_(); _nop_(); LCM_EN=0; } /**********写数据到LCM子函数************/ void WriteDataLCM(uchar WDLCM) { lcd_wait( ); DATAPORT=WDLCM; LCM_RS=1; LCM_RW=0; LCM_EN=1; _nop_(); _nop_(); _nop_(); LCM_EN=0; } /***********LCM内部等待函数*************/ void lcd_wait(void) { DATAPORT=0xff; 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); delay(5); WriteCommandLCM(0x38,0); delay(5); WriteCommandLCM(0x38,0); delay(5); WriteCommandLCM(0x38,1); WriteCommandLCM(0x08,1); WriteCommandLCM(0x01,1); WriteCommandLCM(0x06,1); WriteCommandLCM(0x0c,1); } /****显示指定坐标的一个字符子函数****/ void DisplayOneChar(uchar X,uchar Y,uchar DData) { Y&=1; X&=15; if(Y)X|=0x40; X|=0x80; WriteCommandLCM(X,0); 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++; } } /*****************系统显示子函数*****************/ void display(void) { WriteCommandLCM(0x0c,1); DisplayListChar(0,0,str0); DisplayOneChar(7,0,v_bai+0x30); DisplayOneChar(8,0,v_shi+0x30); DisplayOneChar(9,0,v_ge +0x30); delay(1000); } /************ 读ADC0832函数 ************/ //采集并返回 uchar Adc0832(unsigned char channel) { 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; _nop_(); _nop_(); ADCLK=1; _nop_(); _nop_(); ADCLK=0; _nop_(); _nop_(); ADCLK=1; ADDI=channel&0x1; _nop_(); _nop_(); ADCLK=0; _nop_(); _nop_(); ADCLK=1; ADDI=(channel>>1)&0x1; _nop_(); _nop_(); ADCLK=0; ADDI=1; _nop_(); _nop_(); dat=0; for(i=0;i<8;i++) { dat|=ADDO; ADCLK=1; _nop_(); _nop_(); ADCLK=0; _nop_(); _nop_(); dat<<=1; if(i==7)dat|=ADDO; } for(i=0;i<8;i++) { j=0; j=j|ADDO; ADCLK=1; _nop_(); _nop_(); ADCLK=0; _nop_(); _nop_(); j=j<<7; ndat=ndat|j; if(i<7)ndat>>=1; } ADCS=1; ADCLK=0; ADDO=1; dat<<=8; dat|=ndat; return(dat); } void data_pro(void) //风速计算函数 { unsigned int temp; float v; if(14<ad_data<243) { int vary=ad_data; v=vary*20; v=(v-250)/7; v=(v-0.4)/1.6*32.4; // v=sqrt(v*1600)*0.2-9; temp=(int)(v); v_bai=temp/100; v_shi=(temp%100)/10; v_ge=temp%10; } }