本项目介绍如何将51单片机、DHT11温湿度传感器和12864液晶显示屏进行集成，实现环境温湿度的数据采集与实时显示。
uchar a[] = 温湿度传感器;
uchar b[] = 温度:;
uchar c[] = 湿度:;
uchar d[] = 0123456789;
typedef unsigned char U8;
typedef unsigned int U16;
U8 U8flag, k;
U8 U8temp;
U8 U8WD_H, U8WD_L, U8SD_H, U8SD_L, U8checkdata;
U8 U8WDH_temp, U8WDL_temp, U8SDH_temp, U8SDL_temp, U8checkdata_temp;
U8 U8comdata;
void delay_1ms(uint n) {
uint i,j;
for(i=0;i<=n;i++)
for(j=0;j<110;j++);
}
void delay_10us() {
U8 i;
i--;i--;i--;i--;i--;i--;
}
void write_com(uchar com) {
rs = 0;
rw = 0;
en = 0;
P2=com;
delay_1ms(1);
en=1;
delay_1ms(1);
en=0;
}
void write_data(uchar date) {
rs=1;
rw=0;
en=0;
P2=date;
delay_1ms(1);
en = 1;
delay_1ms(1);
en = 0;
}
void pos(uchar x, uchar y) {
uchar pos;
if(x==0)
x=0x80;
else if(x==1)
x=0x90;
else if(x==2)
x=0x88;
else if(x==3)
x = 0x98;
pos=x+y;
write_com(pos);
}
void display(U8WD_H, U8WD_L, U8SD_H, U8SD_L) {
U8 yi, er , san , si ;
yi=U8WD_H/10;
er = U8WD_H;
san = U8SD_H /10 ;
si = U8SD_H;
pos(1,4);
write_data(d[yi]);
pos(1,5);
write_data(d[er]);
pos(2,4);
write_data(d[san]);
pos(2,5);
write_data(d[si]);
}
void com() {
U8 i;
for(i=0;i<8;i++) {
U8flag = 2;
while((!SJK) && (U8flag++));
delay_10us();
delay_10us();
delay_10us();
U8temp = 0;
if(SJK)
U8temp=1;
U8flag = 2;
while((SJK) && (U8flag++));
if(U8flag==1)
break;
U8comdata <<= 1;
U8comdata |= U8temp;
}
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