51采集SHT15温湿度 1602显示不对，帮忙看看？
用STc12c5A60S2 采集SHt15的温湿度，在1602上显示，总是不正确，代码是参void calc_dht90(float *p_humidity ,float *p_temperature)// calculates temperature and humidity [%RH]
// input :humi (12 bit)
// temp (14 bit)
// output:humi [%RH]
// temp
{
const float C1=-2.0468; // for 12 Bit
const float C2=+0.0367; // for 12 Bit
const float C3=-0.0000015955; // for 12 Bit
const float T1=+0.01; // for 14 Bit @ 5V
const float T2=+0.00008; // for 14 Bit @ 5V
float rh=*p_humidity; // rh: Humidity 12 Bit
float t=*p_temperature; // t: Temperature 14 Bit
float rh_lin; // rh_lin:Humidity linear
float rh_true; // rh_true: Temperature compensated humidity
float t_C; // t_C :Temperature
t_C=t*0.01 - 40; //calc. temperature from ticks to
rh_lin=C3*rh*rh + C2*rh + C1; //calc. humidity from ticks to [%RH]
rh_true=(t_C-25)*(T1+T2*rh)+rh_lin; //calc. temperature compensated humidity [%RH]
if(rh_true>100)rh_true=100; //cut if the value is outside of
if(rh_true<0.1)rh_true=0.1; //the physical possible range
*p_temperature=t_C; //return temperature
*p_humidity=rh_true; //return humidity[%RH]
}
void main(void)
{
value humi_val,temp_val;
unsigned char error,checksum;
unsigned int wendu,shidu;
LCD_Init();
s_connectionreset();
LCD_Write_String(0,0,"TE");
LCD_Write_String(0,1,"RH");
//*********初始化温度显示区*********
LCD_Write_String(3,0,"TTT.TC");
//*********初始化湿度显示区*********
LCD_Write_String(3,1,"RRR.R%");
delay_n10us(20000); //延时0.2s
while(1)
{
error=0;
error+=s_measure((unsigned char*) &humi_val.i,&checksum,HUMI);//measure humidity
error+=s_measure((unsigned char*) &temp_val.i,&checksum,TEMP);//measure temperature
if(error!=0) s_connectionreset(); //in case of an error: connection reset
else
{
humi_val.f=(float)humi_val.i; //converts integer to float
temp_val.f=(float)temp_val.i; //converts integer to float
calc_dht90(&humi_val.f,&temp_val.f); //calculate humidity, temperature
wendu=10000000*temp_val.f;
LCD_Write_Char(3,0,wendu/1000+'0'); //显示温度百位
LCD_Write_Char(4,0,(wendu%1000)/100+'0'); //显示温度十位
LCD_Write_Char(5,0,(wendu%100)/10+'0'); //显示温度个位
LCD_Write_Char(7,0,(wendu%10)+'0'); //显示温度小数点后第一位
shidu=10000000*humi_val.f;
LCD_Write_Char(3,1,shidu/1000+'0'); //显示湿度百位
LCD_Write_Char(4,1,(shidu%1000)/100+'0'); //显示湿度十位
LCD_Write_Char(5,1,(shidu%100)/10+'0'); //显示湿度个位
LCD_Write_Char(7,1,(shidu%10)+'0'); //显示湿度小数点后第一位
}
//----------wait approx. 0.8s to avoid heating up SHTxx------------------------------
delay_n10us(80000); //延时约0.8s
}
}
考了坛子里的v_hyx的代码，这是部分代码，显示温度22.4C湿度85.7%，但是放在温度高的地方也不变化，会是哪里问题？
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