跪求SHT10能用的，调试了一天，还是没有结果-第2页回答

跪求SHT10能用的，调试了一天，还是没有结果

2019-07-20 23:34发布

开始写状态寄存器的值，然后读  是我写入的值但是温湿度的数据很大反反复复改了几次  还是没用  求大佬帮忙解决下  下面是我的程序：
void SHT10_Dly(void)
{
u16 i;
for(i = 500; i > 0; i--);
}
//配置SHT10 IO口
void SHT10_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);

SHT10_ConReset();
}

//设置SDA为输出模式
void SHT10_DATAOut(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}

//设置SDA为输入模式
void SHT10_DATAIn(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}

//写8位数据
//value:要写入的数据
//return err:0-正确（从机应答）  1-错误（从机无应答）
u8 SHT10_WriteByte(u8 value)
{
u8 i, err = 0;
SHT10_DATAOut();
for(i = 0x80; i > 0; i /= 2)
{
if(value&i)
{SHT10_Outdata = 1;}
else
{SHT10_Outdata = 0;}
SHT10_Dly();
SHT10_SCK = 1;
SHT10_Dly();
SHT10_SCK = 0;
SHT10_Dly();
}
SHT10_DATAIn();
SHT10_SCK = 1;
err = SHT10_Inputdata;
SHT10_SCK = 0;
return err;
}
//读8位数据
//Ack:1-选择8位数据CRC8校验 0-选择SDA输出高电平（主机应答），中止结束
u8 SHT10_ReadByte(u8 Ack)
{
u8 i, val = 0;
SHT10_DATAIn();
for(i = 0x80; i > 0; i /= 2)
{
  SHT10_Dly();
  SHT10_SCK = 1;
  SHT10_Dly();
  if(SHT10_Inputdata)
  {val |= 0x01;}
  SHT10_SCK = 0;
  }
  SHT10_DATAOut();
  if(Ack)
  {SHT10_Outdata = 0;} //Ó¦´ð,Ôò»á¶ÁCRC8Ð£ÑéÊý¾Ý
  else
  {SHT10_Outdata = 1;} //²»´ðÓ¦,Êý¾ÝÖÁ´Ë½áÊø
  SHT10_Dly();
  SHT10_SCK = 1;
  SHT10_Dly();
  SHT10_SCK = 0;
  SHT10_Dly();
  return val;
}

/*************************************************************
Description开始传输信号，时序如下:
_____ ________
DATA: |_______|
___ ___
SCK : ___| |___| |______
*************************************************************/
void SHT10_TransStart(void)
{
  SHT10_DATAOut();
  SHT10_Outdata = 1;
  SHT10_SCK = 0;
  SHT10_Dly();
  SHT10_SCK = 1;
  SHT10_Dly();
  SHT10_Outdata = 0;
  SHT10_Dly();
  SHT10_SCK = 0;
  SHT10_Dly();
  SHT10_SCK = 1;
  SHT10_Dly();
  SHT10_Outdata = 1;
  SHT10_Dly();
  SHT10_SCK = 0;
}
/*************************************************************
Function :SHT10_ConReset
Description:通信复位，时序如下:
_____________________________________________________ ________
DATA: |_______|
_ _ _ _ _ _ _ _ _ ___ ___
SCK : __| |__| |__| |__| |__| |__| |__| |__| |__| |______| |___| |______
*************************************************************/
void SHT10_ConReset(void)
{
u8 i;
SHT10_DATAOut();
SHT10_Outdata = 1;
SHT10_SCK = 0;
for(i = 0; i < 9; i++) //´¥·¢SCKÊ±ÖÓ9´Î
{
  SHT10_SCK = 1;
  SHT10_Dly();
  SHT10_SCK = 0;
  SHT10_Dly();
}
SHT10_TransStart();
}
/*************************************************************
Function :SHT10_SoftReset
Description:Èí¼þ¸´Î»
return : err: 0-ÕýÈ·  1-´íÎó
*************************************************************/
u8 SHT10_SoftReset(void)
{
u8 err = 0;
SHT10_ConReset(); //Í¨Ñ¶¸´Î»
err += SHT10_WriteByte(SOFTRESET); //Ð´¸´Î»Ö¸Áî
return err;
}
/*************************************************************
Description:¶Á×´Ì¬¼Ä´æÆ÷
Input : p_value-¶Áµ½µÄÊý¾Ý;p_checksun-¶Áµ½µÄÐ£ÑéÊý¾Ý
return : err: 0-ÕýÈ· 1-´íÎó
*************************************************************/
u8 SHT10_ReadStatusReg(u8 *p_value, u8 *p_checksum)
{
u8 err = 0;
SHT10_TransStart();  //¿ªÊ¼´«Êä
err = SHT10_WriteByte(STATUS_REG_R);
*p_value = SHT10_ReadByte(ACK); //¶Á×´Ì¬¼Ä´æÆ÷
*p_checksum = SHT10_ReadByte(noACK); //¶ÁÈ¡¼ìÑé
return err;
}
/*************************************************************
Description:Ð´×´Ì¬¼Ä´æÆ÷
Input : p_value-ÒªÐ´ÈëµÄÊý¾ÝÖµ
return : err: 0-ÕýÈ·  1-´íÎó
*************************************************************/
u8 SHT10_WriteStatusReg(u8 *p_value)
{
u8 err = 0;
SHT10_TransStart();
err += SHT10_WriteByte(STATUS_REG_W);
err += SHT10_WriteByte(*p_value);
return err;
}
/*************************************************************
Description:´ÓÎÂ¶È´«¸ÐÆ÷¶ÁÈ¡ÎÂ¶È
Input : p_value-¶Áµ½µÄÊý¾Ý;p_checksum-¶ÁÈ¡µÄÐ£ÑéÊý
mode:Ñ¡ÔñT»òÕßRH
return : err: 0-ÕýÈ·  1-´íÎó
************************************************************/
u8 SHT10_Measure(u16 *p_value, u8 *p_checksum, u8 mode)
{
u8 err = 0,i;
u8 value_H = 0;
u8 value_L = 0;
SHT10_TransStart();
switch(mode)
{
  case TEMP:
  err += SHT10_WriteByte(MEASURE_TEMP);
  break;
  case HUMI:
  err += SHT10_WriteByte(MEASURE_HUMI);
  break;
  default:
  break;
}
SHT10_DATAIn();
for (i=0;i<72000000;i++)
{
  if(SHT10_Inputdata==0)
{break; }
}
if(SHT10_Inputdata == 1)
{err += 1;}
value_H = SHT10_ReadByte(ACK);
value_L = SHT10_ReadByte(ACK);
*p_checksum = SHT10_ReadByte(noACK);
*p_value = (value_H << 8) | value_L;
return err;
}
/*************************************************************
Description:¼ÆËãÊªÎÂ¶ÈµÄÖµ
Input : t-´Ó´«¸ÐÆ÷¶Á³öµÄÎÂ¶ÈÖµ;rh-´Ó´«¸ÐÆ÷¶Á³öµÄÊª¶ÈÖµ
p_humidity-¸ù¾Ý¹«Ê½¼ÆËãÊµ¼ÊÊª¶ÈÖµ;p_temperature-¸ù¾Ý¹«Ê½¼ÆËãÊµ¼ÊÎÂ¶ÈÖµ (ÊªÎÂ¶È²¹³¥)
*************************************************************/
void SHT10_Calculate(u16 t, u16 rh, float *p_temperature, float *p_humidity)
{
const float d1 = -39.6;
const float d2 = +0.01;
const float C1 = -2.0468;
const float C2 = +0.0367;
const float C3 = -0.0000015955;
const float T1 = +0.01;
const float T2 = +0.00008;
float RH_Lin;  //RHÏßÐÔÖµ
float RH_Ture; //RHÕæÊµÖµ
float temp_C;
temp_C = d1 + d2 * t; //¼ÆËãÎÂ¶ÈÖµ
RH_Lin = C1 + C2 * rh + C3 * rh * rh; //¼ÆËãÊª¶ÈÖµ
RH_Ture = (temp_C -25) * (T1 + T2 * rh) + RH_Lin;  //Êª¶ÈµÄÎÂ¶È²¹³¥£¬¼ÆËãÊµ¼ÊÊª¶ÈÖµ
if(RH_Ture > 100)  //ÉèÖÃÊª¶ÈÉÏÏÞ
{RH_Ture = 100;}
if(RH_Ture < 0.1)
{RH_Ture = 0.1;} //ÉèÖÃÊª¶ÈÏÂÏÞ
*p_humidity = RH_Ture;
*p_temperature = temp_C;
}

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