Diff: Components/hts221/hts221_class.cpp

Revision:

24:92cc9c6e4b2b

Parent:

14:298bc52b4a70

Child:

26:e8bca468b3a6

diff -r 9da7be2a27c1 -r 92cc9c6e4b2b Components/hts221/hts221_class.cpp
--- a/Components/hts221/hts221_class.cpp	Fri May 29 16:50:56 2015 +0200
+++ b/Components/hts221/hts221_class.cpp	Wed Jun 03 14:57:57 2015 +0200
@@ -36,8 +36,8 @@
 */
 
 /* betzw - based on:
-           X-CUBE-MEMS1/trunk/Drivers/BSP/Components/hts221/hts221.c: revision #270,
-           X-CUBE-MEMS1/trunk: revision #293
+           X-CUBE-MEMS1/trunk/Drivers/BSP/Components/hts221/hts221.c: revision #395,
+           X-CUBE-MEMS1/trunk: revision #402
 */
 
 /* Includes ------------------------------------------------------------------*/
@@ -49,93 +49,94 @@
 /* Methods -------------------------------------------------------------------*/
 /**
  * @brief  HTS221 Calibration procedure
- * @param  None
  * @retval HUM_TEMP_OK in case of success, an error code otherwise
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_Calibration(void)
 {
-    /* Temperature Calibration */
-    /* Temperature in degree for calibration ( "/8" to obtain float) */
-    uint16_t T0_degC_x8_L, T0_degC_x8_H, T1_degC_x8_L, T1_degC_x8_H;
-    uint8_t H0_rh_x2, H1_rh_x2;
-    uint8_t tempReg[2] = {0,0};
-
-    if(HTS221_IO_Read(tempReg, HTS221_T0_degC_X8_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T0_degC_x8_L = (uint16_t)tempReg[0];
-
-    if(HTS221_IO_Read(tempReg, HTS221_T1_T0_MSB_X8_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T0_degC_x8_H = (uint16_t) (tempReg[0] & 0x03);
-    T0_degC = ((float)((T0_degC_x8_H<<8) | (T0_degC_x8_L)))/8;
-
-    if(HTS221_IO_Read(tempReg, HTS221_T1_degC_X8_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T1_degC_x8_L = (uint16_t)tempReg[0];
-
-    if(HTS221_IO_Read(tempReg, HTS221_T1_T0_MSB_X8_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T1_degC_x8_H = (uint16_t) (tempReg[0] & 0x0C);
-    T1_degC_x8_H = T1_degC_x8_H >> 2;
-    T1_degC = ((float)((T1_degC_x8_H<<8) | (T1_degC_x8_L)))/8;
-
-    if(HTS221_IO_Read(tempReg, (HTS221_T0_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    if(HTS221_IO_Read(tempReg, (HTS221_T1_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    T1_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    /* Humidity Calibration */
-    /* Humidity in degree for calibration ( "/2" to obtain float) */
-
-    if(HTS221_IO_Read(&H0_rh_x2, HTS221_H0_RH_X2_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    if(HTS221_IO_Read(&H1_rh_x2, HTS221_H1_RH_X2_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    if(HTS221_IO_Read(&tempReg[0], (HTS221_H0_T0_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    H0_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    if(HTS221_IO_Read(&tempReg[0], (HTS221_H1_T0_OUT_L_ADDR  | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    H1_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    H0_rh = ((float)H0_rh_x2)/2;
-    H1_rh = ((float)H1_rh_x2)/2;
-    
-    return HUM_TEMP_OK;
+  /* Temperature Calibration */
+  /* Temperature in degree for calibration ( "/8" to obtain float) */
+  uint16_t T0_degC_x8_L, T0_degC_x8_H, T1_degC_x8_L, T1_degC_x8_H;
+  uint8_t H0_rh_x2, H1_rh_x2;
+  uint8_t tempReg[2] = {0, 0};
+  
+  if(HTS221_IO_Read(tempReg, HTS221_T0_degC_X8_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T0_degC_x8_L = (uint16_t)tempReg[0];
+  
+  if(HTS221_IO_Read(tempReg, HTS221_T1_T0_MSB_X8_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T0_degC_x8_H = (uint16_t) (tempReg[0] & 0x03);
+  T0_degC = ((float)((T0_degC_x8_H << 8) | (T0_degC_x8_L))) / 8;
+  
+  if(HTS221_IO_Read(tempReg, HTS221_T1_degC_X8_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T1_degC_x8_L = (uint16_t)tempReg[0];
+  
+  if(HTS221_IO_Read(tempReg, HTS221_T1_T0_MSB_X8_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T1_degC_x8_H = (uint16_t) (tempReg[0] & 0x0C);
+  T1_degC_x8_H = T1_degC_x8_H >> 2;
+  T1_degC = ((float)((T1_degC_x8_H << 8) | (T1_degC_x8_L))) / 8;
+  
+  if(HTS221_IO_Read(tempReg, (HTS221_T0_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T0_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  if(HTS221_IO_Read(tempReg, (HTS221_T1_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T1_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  /* Humidity Calibration */
+  /* Humidity in degree for calibration ( "/2" to obtain float) */
+  
+  if(HTS221_IO_Read(&H0_rh_x2, HTS221_H0_RH_X2_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  if(HTS221_IO_Read(&H1_rh_x2, HTS221_H1_RH_X2_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  if(HTS221_IO_Read(&tempReg[0], (HTS221_H0_T0_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD),
+                    2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  H0_T0_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  if(HTS221_IO_Read(&tempReg[0], (HTS221_H1_T0_OUT_L_ADDR  | HTS221_I2C_MULTIPLEBYTE_CMD),
+                    2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  H1_T0_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  H0_rh = ((float)H0_rh_x2) / 2;
+  H1_rh = ((float)H1_rh_x2) / 2;
+  
+  return HUM_TEMP_OK;
 }
 
 
@@ -145,42 +146,42 @@
  * @retval HUM_TEMP_OK in case of success, an error code otherwise
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_Init(HUM_TEMP_InitTypeDef *HTS221_Init)
-{  
-    uint8_t tmp = 0x00;
-
-    /* Configure the low level interface ---------------------------------------*/
-    if(HTS221_IO_Init() != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    if(HTS221_Power_On() != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    if(HTS221_Calibration() != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    /* Output Data Rate selection */
-    tmp &= ~(HTS221_ODR_MASK);
-    tmp |= HTS221_Init->OutputDataRate;
-
-    if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    HTS221_IO_ITConfig();
-    
-    return HUM_TEMP_OK;
+{
+  uint8_t tmp = 0x00;
+  
+  /* Configure the low level interface ---------------------------------------*/
+  if(HTS221_IO_Init() != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  if(HTS221_Power_On() != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  if(HTS221_Calibration() != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Output Data Rate selection */
+  tmp &= ~(HTS221_ODR_MASK);
+  tmp |= HTS221_Init->OutputDataRate;
+  
+  if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  HTS221_IO_ITConfig();
+  
+  return HUM_TEMP_OK;
 }
 
 /**
@@ -190,39 +191,38 @@
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_ReadID(uint8_t *ht_id)
 {
-    if(!ht_id)
-    { 
-      return HUM_TEMP_ERROR; 
-    }
- 
-    return HTS221_IO_Read(ht_id, HTS221_WHO_AM_I_ADDR, 1);
+  if(!ht_id)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  return HTS221_IO_Read(ht_id, HTS221_WHO_AM_I_ADDR, 1);
 }
 
 /**
  * @brief  Reboot memory content of HTS221
- * @param  None
  * @retval HUM_TEMP_OK in case of success, an error code otherwise
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_RebootCmd(void)
 {
-    uint8_t tmpreg;
-
-    /* Read CTRL_REG2 register */
-    if(HTS221_IO_Read(&tmpreg, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    /* Enable or Disable the reboot memory */
-    tmpreg |= HTS221_BOOT_REBOOTMEMORY;
-
-    /* Write value to MEMS CTRL_REG2 regsister */
-    if(HTS221_IO_Write(&tmpreg, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    return HUM_TEMP_OK;
+  uint8_t tmpreg;
+  
+  /* Read CTRL_REG2 register */
+  if(HTS221_IO_Read(&tmpreg, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Enable or Disable the reboot memory */
+  tmpreg |= HTS221_BOOT_REBOOTMEMORY;
+  
+  /* Write value to MEMS CTRL_REG2 regsister */
+  if(HTS221_IO_Write(&tmpreg, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  return HUM_TEMP_OK;
 }
 
 
@@ -233,64 +233,67 @@
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_GetHumidity(float* pfData)
 {
-    int16_t H_T_out, humidity_t;
-    uint8_t tempReg[2] = {0,0};
-    uint8_t tmp = 0x00;
-    float H_rh;
-    
-    if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  int16_t H_T_out, humidity_t;
+  uint8_t tempReg[2] = {0, 0};
+  uint8_t tmp = 0x00;
+  float H_rh;
+  
+  if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Output Data Rate selection */
+  tmp &= (HTS221_ODR_MASK);
+  
+  if(tmp == 0x00)
+  {
+    if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
     {
       return HUM_TEMP_ERROR;
     }
-
-    /* Output Data Rate selection */
-    tmp &= (HTS221_ODR_MASK);
     
-    if(tmp == 0x00)
-    {
-      if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-      {
-        return HUM_TEMP_ERROR;
-      }
-
-      /* Serial Interface Mode selection */
-      tmp &= ~(HTS221_ONE_SHOT_MASK);
-      tmp |= HTS221_ONE_SHOT_START;
-
-      if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-      {
-        return HUM_TEMP_ERROR;
-      }
+    /* Serial Interface Mode selection */
+    tmp &= ~(HTS221_ONE_SHOT_MASK);
+    tmp |= HTS221_ONE_SHOT_START;
     
-      do{
-      
-        if(HTS221_IO_Read(&tmp, HTS221_STATUS_REG_ADDR, 1) != HUM_TEMP_OK)
-        {
-          return HUM_TEMP_ERROR;
-        }
-         
-      }while(!(tmp&&0x02));
-    }
-    
-    
-    if(HTS221_IO_Read(&tempReg[0], (HTS221_HUMIDITY_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
+    if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
     {
       return HUM_TEMP_ERROR;
     }
     
-    H_T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    H_rh = ( float )(((( H_T_out - H0_T0_out ) * ( H1_rh - H0_rh )) / ( H1_T0_out - H0_T0_out )) + H0_rh );
-
-    // Truncate to specific number of decimal digits
-    humidity_t = (uint16_t)(H_rh * pow(10.0f,HUM_DECIMAL_DIGITS));
-    *pfData = ((float)humidity_t)/pow(10.0f,HUM_DECIMAL_DIGITS);
+    do
+    {
     
-    // Prevent data going below 0% and above 100% due to linear interpolation
-    if ( *pfData <   0.0f ) *pfData =   0.0f;
-    if ( *pfData > 100.0f ) *pfData = 100.0f;
-    
-    return HUM_TEMP_OK;
+      if(HTS221_IO_Read(&tmp, HTS221_STATUS_REG_ADDR, 1) != HUM_TEMP_OK)
+      {
+        return HUM_TEMP_ERROR;
+      }
+      
+    }
+    while(!(tmp && 0x02));
+  }
+  
+  
+  if(HTS221_IO_Read(&tempReg[0], (HTS221_HUMIDITY_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD),
+                    2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  H_T_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  H_rh = ( float )(((( H_T_out - H0_T0_out ) * ( H1_rh - H0_rh )) / ( H1_T0_out - H0_T0_out )) + H0_rh );
+  
+  // Truncate to specific number of decimal digits
+  humidity_t = (uint16_t)(H_rh * pow(10, HUM_DECIMAL_DIGITS));
+  *pfData = ((float)humidity_t) / pow(10, HUM_DECIMAL_DIGITS);
+  
+  // Prevent data going below 0% and above 100% due to linear interpolation
+  if ( *pfData <   0.0f ) *pfData =   0.0f;
+  if ( *pfData > 100.0f ) *pfData = 100.0f;
+  
+  return HUM_TEMP_OK;
 }
 
 /**
@@ -300,112 +303,115 @@
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_GetTemperature(float* pfData)
 {
-    int16_t T_out, temperature_t;
-    uint8_t tempReg[2] = {0,0};
-    uint8_t tmp = 0x00;
-    float T_degC;
-    
-    if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    /* Output Data Rate selection */
-    tmp &= (HTS221_ODR_MASK);
-    
-    if(tmp == 0x00)
-    {
-      if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-      {
-        return HUM_TEMP_ERROR;
-      }
-
-      /* Serial Interface Mode selection */
-      tmp &= ~(HTS221_ONE_SHOT_MASK);
-      tmp |= HTS221_ONE_SHOT_START;
-
-      if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
-      {
-        return HUM_TEMP_ERROR;
-      }
-    
-      do{
-      
-        if(HTS221_IO_Read(&tmp, HTS221_STATUS_REG_ADDR, 1) != HUM_TEMP_OK)
-        {
-          return HUM_TEMP_ERROR;
-        }
-       
-      }while(!(tmp&&0x01));
-    }
-
-    if(HTS221_IO_Read(&tempReg[0], (HTS221_TEMP_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD), 2) != HUM_TEMP_OK)
+  int16_t T_out, temperature_t;
+  uint8_t tempReg[2] = {0, 0};
+  uint8_t tmp = 0x00;
+  float T_degC;
+  
+  if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Output Data Rate selection */
+  tmp &= (HTS221_ODR_MASK);
+  
+  if(tmp == 0x00)
+  {
+    if(HTS221_IO_Read(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
     {
       return HUM_TEMP_ERROR;
     }
     
-    T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
-
-    T_degC = ((float)(T_out - T0_out))/(T1_out - T0_out) * (T1_degC - T0_degC) + T0_degC;
-
-    temperature_t = (int16_t)(T_degC * pow(10.0f,TEMP_DECIMAL_DIGITS));
-
-    *pfData = ((float)temperature_t)/pow(10.0f,TEMP_DECIMAL_DIGITS);
+    /* Serial Interface Mode selection */
+    tmp &= ~(HTS221_ONE_SHOT_MASK);
+    tmp |= HTS221_ONE_SHOT_START;
+    
+    if(HTS221_IO_Write(&tmp, HTS221_CTRL_REG2_ADDR, 1) != HUM_TEMP_OK)
+    {
+      return HUM_TEMP_ERROR;
+    }
+    
+    do
+    {
     
-    return HUM_TEMP_OK;
+      if(HTS221_IO_Read(&tmp, HTS221_STATUS_REG_ADDR, 1) != HUM_TEMP_OK)
+      {
+        return HUM_TEMP_ERROR;
+      }
+      
+    }
+    while(!(tmp && 0x01));
+  }
+  
+  if(HTS221_IO_Read(&tempReg[0], (HTS221_TEMP_OUT_L_ADDR | HTS221_I2C_MULTIPLEBYTE_CMD),
+                    2) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  T_out = ((((int16_t)tempReg[1]) << 8) + (int16_t)tempReg[0]);
+  
+  T_degC = ((float)(T_out - T0_out)) / (T1_out - T0_out) * (T1_degC - T0_degC) + T0_degC;
+  
+  temperature_t = (int16_t)(T_degC * pow(10, TEMP_DECIMAL_DIGITS));
+  
+  *pfData = ((float)temperature_t) / pow(10, TEMP_DECIMAL_DIGITS);
+  
+  return HUM_TEMP_OK;
 }
 
 
 /**
  * @brief  Exit the shutdown mode for HTS221
- * @param  None
  * @retval HUM_TEMP_OK in case of success, an error code otherwise
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_Power_On(void)
 {
-    uint8_t tmpReg;
-
-    /* Read the register content */
-    if(HTS221_IO_Read(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-
-    /* Set the power down bit */
-    tmpReg |= HTS221_MODE_ACTIVE;
-
-    /* Write register */
-    if(HTS221_IO_Write(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    return HUM_TEMP_OK;
+  uint8_t tmpReg;
+  
+  /* Read the register content */
+  if(HTS221_IO_Read(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Set the power down bit */
+  tmpReg |= HTS221_MODE_ACTIVE;
+  
+  /* Write register */
+  if(HTS221_IO_Write(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  return HUM_TEMP_OK;
 }
 
 /**
  * @brief  Enter the shutdown mode for HTS221
- * @param  None
  * @retval HUM_TEMP_OK in case of success, an error code otherwise
  */
 HUM_TEMP_StatusTypeDef HTS221::HTS221_Power_OFF(void)
 {
-    uint8_t tmpReg;
-
-    /* Read the register content */
-    if(HTS221_IO_Read(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
+  uint8_t tmpReg;
+  
+  /* Read the register content */
+  if(HTS221_IO_Read(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  /* Reset the power down bit */
+  tmpReg &= ~(HTS221_MODE_ACTIVE);
+  
+  /* Write register */
+  if(HTS221_IO_Write(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
+  {
+    return HUM_TEMP_ERROR;
+  }
+  
+  return HUM_TEMP_OK;
+}
 
-    /* Reset the power down bit */
-    tmpReg &= ~(HTS221_MODE_ACTIVE);
-
-    /* Write register */
-    if(HTS221_IO_Write(&tmpReg, HTS221_CTRL_REG1_ADDR, 1) != HUM_TEMP_OK)
-    {
-      return HUM_TEMP_ERROR;
-    }
-    
-    return HUM_TEMP_OK;
-}
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/