实验三程序实现

1、main.c #include#include#include1602.h#includepcf8591.h#define uchar unsigned char#define uint unsigned int static uchar tem;uint shu;void main()while(l)uint a,be tem=rdata()； shu=tem;/* 算法 */a=shu/51;/b=shu%51;/c=b*2;/shu=a*100+c;/*/*算法 2*/shu十= shu;/a=shu/100%10;/b=shu/10%10; /c=shu%10;/if(a=l&a=2&

2、a=3&a=4&a5)/shu=a*100+b*10+(c-？/else/shu = a*100+b*10+(c-10);/* 算法 3*/shu=shu*100/51;a=shu/100%10;b=shu/10%10;c=shu%10;shu=a*100+b*10+c; display(shu);PCF8591.h #ifndef_PCF8591_H_#define_PCF8591_H_void startQ；void stop()；void rackQ；void nack();void wbyte(unsigned char tmp);unsigned char rbyte()； unsi

3、gned char rdata();#endifPCF8591.C#include#include#includeH1602.h#includepcf8591.h#define uchar unsigned char#define uint unsigned int uchar temp.tem;/uint shu;sbit SCL=P1AO;sbit SDA=P1A1;void start() SDA=1;SCL=1;_nop_();_nop_();SDA=0;_nop_();_nop_();SCL=0;void stop() SDA=0;SCL=0;_nop_();-nop_();SCL=

4、1;_nop_();_nop_();SDA = 1;void rack() SCL=1;_nop_();_nop_();SCL=O;void nack() SDA=1;SCL=1;_nop_();_nop_();SCL=O;SDA=1;void wbyte(unsigned char tmp) unsigned char i;for(i=0;i8;i +)tmp = l;SDA=CY;SCL=1;_nop_();_nop_();SCL=O;rack();unsigned char rbyte()(unsigned char i,d;for(i=0;i8;i +) SCL=1;d = l;d 二

5、 d|SDA; SCL=O;return d;)unsigned char rdata()(unsigned char d;start();wbyte(0 x90);wbyte(O);start();wbyte(0 x91);d=rbyte();nack();stop()；return d;)16O2,h#ifndef_PCF8591_H_#define_PCF8591_H_void start()；void stop();void rackQ；void nack();void wbyte(unsigned char tmp);unsigned char rbyte();unsigned ch

6、ar rdata();#endif1602.C#include#include1602.h#includepcf8591.h#define uchar unsigned char#define uint unsigned intuchar table16=l1;uchar tablel 二H,2,OQxdf,。,；;/ L,-5,0 xdf,C; ?sbit RS = P2八0;sbit RW = P2A1;sbit EN = P2八2;void delay(uint count) /delay(uint i;while(count)(i=200;while。)i-；count-;)int d

7、elayms(unsigned char xms)(unsigned char x,y;for(x=xms;x0;x-)for(y=110;y0;y-);return 0;)int write_com(unsigned char com)(RS = 0;RW = 0;P0 = com;delayms(5);EN = 1;delayms(5);EN = 0;return 0;)int write_date(unsigned char date)RS = 1;RW = 0;才)五P一(三-qs)1EP七m (+6工。.1)0A 一(08X0EO0当 m-.HS0-n-s H.+co“Egqu 一。+川*90_得1-.X _qa 一O+KL寸qqsHsqq 区 匚-Hsgqploxsaqel 一-Hooqel-idE 工00 oT%OT/dE E 一 ioordE KLO7T7/一