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.
00010   * All rights reserved.</center></h2>
00011   *
00012   * This software component is licensed by ST under BSD 3-Clause license,
00013   * the "License"; You may not use this file except in compliance with the
00014   * License. You may obtain a copy of the License at:
00015   *                        opensource.org/licenses/BSD-3-Clause
00016   *
00017   ******************************************************************************
00018   */
00019 
00020 /* Includes ------------------------------------------------------------------*/
00021 #include "stm32l475e_iot01_hsensor.h"
00022 
00023 /** @addtogroup BSP
00024   * @{
00025   */ 
00026 
00027 /** @addtogroup STM32L475E_IOT01
00028   * @{
00029   */
00030 
00031 /** @defgroup STM32L475E_IOT01_HUMIDITY HUMIDITY
00032   * @{
00033   */
00034 
00035 /** @defgroup STM32L475E_IOT01_HUMIDITY_Private_Variables HUMIDITY Private Variables 
00036   * @{
00037   */ 
00038 static HSENSOR_DrvTypeDef *Hsensor_drv;  
00039 /**
00040   * @}
00041   */
00042 
00043 /** @defgroup STM32L475E_IOT01_HUMIDITY_Private_Functions HUMIDITY Private Functions
00044   * @{
00045   */ 
00046 
00047 /**
00048   * @brief  Initializes peripherals used by the I2C Humidity Sensor driver.
00049   * @retval HSENSOR status
00050   */
00051 uint32_t BSP_HSENSOR_Init(void)
00052 {
00053   uint32_t ret;
00054   
00055   if(HTS221_H_Drv.ReadID(HTS221_I2C_ADDRESS) != HTS221_WHO_AM_I_VAL)
00056   {
00057     ret = HSENSOR_ERROR;
00058   }
00059   else
00060   {
00061     Hsensor_drv = &HTS221_H_Drv;
00062     /* HSENSOR Init */   
00063     Hsensor_drv->Init(HTS221_I2C_ADDRESS);
00064     ret = HSENSOR_OK;
00065   }
00066   
00067   return ret;
00068 }
00069 
00070 /**
00071   * @brief  Read ID of HTS221.
00072   * @retval HTS221 ID value.
00073   */
00074 uint8_t BSP_HSENSOR_ReadID(void)
00075 { 
00076   return Hsensor_drv->ReadID(HTS221_I2C_ADDRESS);
00077 }
00078 
00079 /**
00080   * @brief  Read Humidity register of HTS221.
00081   * @retval HTS221 measured humidity value.
00082   */
00083 float BSP_HSENSOR_ReadHumidity(void)
00084 { 
00085   return Hsensor_drv->ReadHumidity(HTS221_I2C_ADDRESS);
00086 }
00087 /**
00088   * @}
00089   */
00090 
00091 /**
00092   * @}
00093   */
00094 
00095 /**
00096   * @}
00097   */
00098 
00099 /**
00100   * @}
00101   */
00102 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/