51温度湿度c语言代码Word文档格式.docx
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voiddelay(uintz)
{
uintx,y;
for(x=z;
x>
0;
x--)
for(y=110;
y>
y--);
}
//SHT11程序(SHT11.c):
#definenoACK0//继续传输数据,用于判断是否结束通讯
#defineACK1//结束数据传输;
//地址命令读/写
#defineSTATUS_REG_W0x06//00000110
#defineSTATUS_REG_R0x07//00000111
#defineMEASURE_TEMP0x03//00000011
#defineMEASURE_HUMI0x05//00000101
#defineRESET0x1e//00011110
//写字节程序
chars_write_byte(unsignedcharvalue)
{
unsignedchari,error=0;
for(i=0x80;
i>
>
=1)//高位为1,循环右移
{
if(i&
value)DATA=1;
//和要发送的数相与,结果为发送的位
elseDATA=0;
SCK=1;
_nop_();
_nop_();
//延时3us
SCK=0;
}
DATA=1;
//释放数据线
SCK=1;
error=DATA;
//检查应答信号,确认通讯正常
_nop_();
SCK=0;
returnerror;
//error=1通讯错误
//读字节程序
chars_read_byte(unsignedcharack)
unsignedchari,val=0;
for(i=0x80;
if(DATA)val=(val|i);
//读一位数据线的值
DATA=!
ack;
//如果是校验,读取完后结束通讯;
returnval;
//启动传输
voids_transstart(void)
DATA=1;
DATA=0;
voids_connectionreset(void)
unsignedchari;
//准备
for(i=0;
i<
9;
i++)//DATA保持高,SCK时钟触发9次,发送启动传输,通迅即复位
s_transstart();
//启动传输
}
//温湿度测量
chars_measure(unsignedchar*p_value,unsignedchar*p_checksum,unsignedcharmode)
//进行温度或者湿度转换,由参数mode决定转换内容;
unsignederror=0;
unsignedinti;
switch(mode)//选择发送命令
caseTEMP:
error+=s_write_byte(MEASURE_TEMP);
break;
//测量温度
caseHUMI:
error+=s_write_byte(MEASURE_HUMI);
//测量湿度
default:
for(i=0;
65535;
i++)if(DATA==0)break;
//等待测量结束
if(DATA)error+=1;
//如果长时间数据线没有拉低,说明测量错误
*(p_value)=s_read_byte(ACK);
//读第一个字节,高字节(MSB)
*(p_value+1)=s_read_byte(ACK);
//读第二个字节,低字节(LSB)
*p_checksum=s_read_byte(noACK);
//readCRC校验码
//error=1通讯错误
//温湿度值标度变换及温度补偿
voidcalc_sth10(float*p_humidity,float*p_temperature)
constfloatC1=-4.0;
//12位湿度精度修正公式
constfloatC2=+0.0405;
constfloatC3=-0.0000028;
constfloatT1=0.46;
//14位温度精度5V条件修正公式
constfloatT2=+0.00008;
floatrh=*p_humidity;
//rh:
12位湿度
floatt=*p_temperature;
//t:
14位温度
floatrh_lin;
//rh_lin:
湿度linear值
floatrh_true;
//rh_true:
湿度ture值
floatt_C;
//t_C:
温度℃
t_C=t*0.01-40;
//补偿温度
rh_lin=C3*rh*rh+C2*rh+C1;
//相对湿度非线性补偿
rh_true=(t_C-33)*(T1+T2*rh)+rh_lin;
//相对湿度对于温度依赖性补偿
if(rh_true>
100)rh_true=100;
//湿度最大修正
if(rh_true<
0.1)rh_true=0.1;
//湿度最小修正
*p_temperature=t_C;
//返回温度结果
*p_humidity=rh_true;
//返回湿度结果
//从相对温度和湿度计算露点
floatcalc_dewpoint(floath,floatt)
floatlogEx,dew_point;
logEx=0.66077+7.5*t/(237.3+t)+(log10(h)-2);
dew_point=(0.66077-logEx)*237.3/(logEx-8.16077);
returndew_point;
}
typedefunion//定义共用同类型
{
floatf;
}value;
voidwrite_com(ucharcom)//lcd部分
lcdrs=0;
lcdrw=0;
delay(5);
lcden=1;
P0=com;
lcden=0;
voidwrite_data(uchardate)
lcdrs=1;
P0=date;
voidlcd_init()
delay(15);
write_com(0x38);
write_com(0x08);
write_com(0x01);
write_com(0x06);
write_com(0x0c);
write_com(0x80+1);
TMOD=0x11;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
for(num=0;
num<
8;
num++)
{
write_data(table1[num]);
delay(20);
write_com(0x80+0x40+1);
16;
write_data(table2[num]);
}
voidwrite_sfm(ucharadd,uchardate)
ucharshi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_data(0x30+shi);
write_data(0x30+ge);
voidwrite_shedingsfm(ucharadd1,uchardate1)
ucharshi1,ge1;
shi1=date1/10;
ge1=date1%10;
write_com(0x80+add1);
write_data(0x30+shi1);
write_data(0x30+ge1);
voidkeyscan()
if(shi_s1==0)
s1num++;
while(!
shi_s1);
if(s1num==1)
write_com(0x80+0x40+8);
write_com(0x0f);
if(s1num==2)
write_com(0x80+0x40+5);
write_com(0x0f);
if(s1num==3)
write_com(0x80+0x40+2);
if(s1num==4)
{TR0=1;
write_com(0x80+8);
if(s1num==5)
write_com(0x80+5);
if(s1num==6)
write_com(0x80+2);
if(s1num==7)
s1num=0;
if(s1num!
=0)
if(shi_s2==0)
while(!
shi_s2);
miao++;
if(miao==60)
{
miao=0;
}
write_sfm(7,miao);
fen++;
if(fen==60)
fen=0;
write_sfm(4,fen);
shi++;
if(shi==24)
shi=0;
}
write_sfm(1,shi);
if(s1num==4)
TR0=1;
miao1++;
if(miao1==60)
miao1=0;
write_shedingsfm(7,miao1);
fen1++;
if(fen1==60)
fen1=0;
write_shedingsfm(4,fen1);
shi1++;
if(shi1==24)
shi1=0;
write_shedingsfm(1,shi1);
if(shi_s3==0)
if(shi_s3==0)
shi_s3);
miao--;
if(miao==-1)
miao=59;
fen--;
if(fen==-1)
fen=59;
shi--;
if(shi==-1)
shi=23;
if(s1num==4)
miao1--;
if(miao1==-1)
miao1=59;
fen1--;
if(fen1==-1)
fen1=59;
shi1--;
if(shi1==-1)
shi1=23;
voidbaojing()
if(shui1==0)
led=~led;
delay(150);
for(i=0;
10;
i++)
sound=0;
delay(20);
sound=1;
if(shui2==0)
relay=1;
voidlcd_dingshi()
keyscan();
if(count==20)
count=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(1,shi);
}
write_sfm(4,fen);
write_sfm(7,miao);
voidmain()
unsignedinttemp,humi;
valuehumi_val,temp_val;
//定义两个共同体,一个用于湿度,一个用于温度
floatdew_point;
//用于记录露点值
unsignedcharerror;
//用于检验是否出现错误
unsignedcharchecksum;
//CRC
ucharn;
n=0;
relay=1;
lcd_init();
P3=0;
led=0;
while
(1)
if(s1==0)//if语句内为关系运算符为==
if(s1==0)
n++;
while(!
s1);
if(n==5)
n=0;
switch(n)//使用多分支选择语句
case1:
P3=0x10;
bian=500;
//第一个LED亮
break;
case2:
P3=0x20;
bian=450;
//第二个LED亮
case3:
P3=0x40;
bian=550;
//第三个LED亮
case4:
P3=0x80;
bian=600;
//第四个LED亮
default:
P3=0x00;
lcd_dingshi();
if((shi==shi1)&
&
(fen==fen1)&
(miao==miao1))
relay=0;
baojing();
if(miao==10)
s_connectionreset();
//启动连接复位
error=0;
//初始化error=0,即没有错误
error+=s_measure((unsignedchar*)&
temp_val.i,&
checksum,TEMP);
//温度测量
humi_val.i,&
checksum,HUMI);
//湿度测量
if(error!
=0)s_connectionreset();
////如果发生错误,系统复位
humi_val.f=(float)humi_val.i;
//转换为浮点数
temp_val.f=(float)temp_val.i;
calc_sth10(&
humi_val.f,&
temp_val.f);
//修正相对湿度及温度
dew_point=calc_dewpoint(humi_val.f,temp_val.f);
//计算edew_point
temp=temp_val.f*10;
humi=humi_val.f*10;
disdata[0]=humi%1000/100+0x30;
disdata[1]=humi%100/10+0x30;
disdata[2]=humi%10+0x30;
write_com(0x80+0x40+12);
write_data(disdata[0]);
write_com(0x80+0x40+13);
write_data(disdata[1]);
write_com(0x80+0x40+14);
write_data(0x2e);
write_com(0x80+0x40+15);
write_data(disdata[2]);
miao++;
if(P3!
=0x00)
if(bian>
humi){relay=0;
else{relay=1;
}
if(shui2==0){relay=1;
}
voidtimer0()interrupt1
count++;