stm32l475e_iot01_hsensor.c

00001 /**
00002   ******************************************************************************
00003   * @file    stm32l475e_iot01_hsensor.c
00004   * @author  MCD Application Team
00005   * @brief   This file provides a set of functions needed to manage the humidity sensor
00006   ******************************************************************************
00007   * @attention
00008   *
00009   * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V.
00010   * All rights reserved.</center></h2>
00011   *
00012   * Redistribution and use in source and binary forms, with or without
00013   * modification, are permitted, provided that the following conditions are met:
00014   *
00015   * 1. Redistribution of source code must retain the above copyright notice,
00016   *    this list of conditions and the following disclaimer.
00017   * 2. Redistributions in binary form must reproduce the above copyright notice,
00018   *    this list of conditions and the following disclaimer in the documentation
00019   *    and/or other materials provided with the distribution.
00020   * 3. Neither the name of STMicroelectronics nor the names of other
00021   *    contributors to this software may be used to endorse or promote products
00022   *    derived from this software without specific written permission.
00023   * 4. This software, including modifications and/or derivative works of this
00024   *    software, must execute solely and exclusively on microcontroller or
00025   *    microprocessor devices manufactured by or for STMicroelectronics.
00026   * 5. Redistribution and use of this software other than as permitted under
00027   *    this license is void and will automatically terminate your rights under
00028   *    this license.
00029   *
00030   * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
00031   * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
00032   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
00033   * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
00034   * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
00035   * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00036   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00037   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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00041   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00042   *
00043   ******************************************************************************
00044   */
00045 
00046 /* Includes ------------------------------------------------------------------*/
00047 #include "stm32l475e_iot01_hsensor.h"
00048 
00049 /** @addtogroup BSP
00050   * @{
00051   */ 
00052 
00053 /** @addtogroup STM32L475E_IOT01
00054   * @{
00055   */
00056 
00057 /** @defgroup STM32L475E_IOT01_HUMIDITY HUMIDITY
00058   * @{
00059   */
00060 
00061 /** @defgroup STM32L475E_IOT01_HUMIDITY_Private_Variables HUMIDITY Private Variables 
00062   * @{
00063   */ 
00064 static HSENSOR_DrvTypeDef *Hsensor_drv;  
00065 /**
00066   * @}
00067   */
00068 
00069 /** @defgroup STM32L475E_IOT01_HUMIDITY_Private_Functions HUMIDITY Private Functions
00070   * @{
00071   */ 
00072 
00073 /**
00074   * @brief  Initializes peripherals used by the I2C Humidity Sensor driver.
00075   * @retval HSENSOR status
00076   */
00077 uint32_t BSP_HSENSOR_Init(void)
00078 {
00079   uint32_t ret;
00080   
00081   if(HTS221_H_Drv.ReadID(HTS221_I2C_ADDRESS) != HTS221_WHO_AM_I_VAL)
00082   {
00083     ret = HSENSOR_ERROR;
00084   }
00085   else
00086   {
00087     Hsensor_drv = &HTS221_H_Drv;
00088     /* HSENSOR Init */   
00089     Hsensor_drv->Init(HTS221_I2C_ADDRESS);
00090     ret = HSENSOR_OK;
00091   }
00092   
00093   return ret;
00094 }
00095 
00096 /**
00097   * @brief  Read ID of HTS221.
00098   * @retval HTS221 ID value.
00099   */
00100 uint8_t BSP_HSENSOR_ReadID(void)
00101 { 
00102   return Hsensor_drv->ReadID(HTS221_I2C_ADDRESS);
00103 }
00104 
00105 /**
00106   * @brief  Read Humidity register of HTS221.
00107   * @retval HTS221 measured humidity value.
00108   */
00109 float BSP_HSENSOR_ReadHumidity(void)
00110 { 
00111   return Hsensor_drv->ReadHumidity(HTS221_I2C_ADDRESS);
00112 }
00113 /**
00114   * @}
00115   */
00116 
00117 /**
00118   * @}
00119   */
00120 
00121 /**
00122   * @}
00123   */
00124 
00125 /**
00126   * @}
00127   */
00128 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/