B-L475E-IOT01 BSP User Manual: stm32l475e_iot01_psensor.c Source File

00001 /**
00002   ******************************************************************************
00003   * @file    stm32l475e_iot01_psensor.c
00004   * @author  MCD Application Team
00005   * @version V1.0.0
00006   * @date    17-March-2017
00007   * @brief   This file provides a set of functions needed to manage the pressure sensor
00008   ******************************************************************************
00009   * @attention
00010   *
00011   * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V.
00012   * All rights reserved.</center></h2>
00013   *
00014   * Redistribution and use in source and binary forms, with or without
00015   * modification, are permitted, provided that the following conditions are met:
00016   *
00017   * 1. Redistribution of source code must retain the above copyright notice,
00018   *    this list of conditions and the following disclaimer.
00019   * 2. Redistributions in binary form must reproduce the above copyright notice,
00020   *    this list of conditions and the following disclaimer in the documentation
00021   *    and/or other materials provided with the distribution.
00022   * 3. Neither the name of STMicroelectronics nor the names of other
00023   *    contributors to this software may be used to endorse or promote products
00024   *    derived from this software without specific written permission.
00025   * 4. This software, including modifications and/or derivative works of this
00026   *    software, must execute solely and exclusively on microcontroller or
00027   *    microprocessor devices manufactured by or for STMicroelectronics.
00028   * 5. Redistribution and use of this software other than as permitted under
00029   *    this license is void and will automatically terminate your rights under
00030   *    this license.
00031   *
00032   * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
00033   * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
00034   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
00035   * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
00036   * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
00037   * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00038   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00039   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
00040   * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00041   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00042   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
00043   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00044   *
00045   ******************************************************************************
00046   */
00047 
00048 /* Includes ------------------------------------------------------------------*/
00049 #include "stm32l475e_iot01_psensor.h"
00050 
00051 /** @addtogroup BSP
00052   * @{
00053   */ 
00054 
00055 /** @addtogroup STM32L475E_IOT01
00056   * @{
00057   */
00058 
00059 /** @defgroup STM32L475E_IOT01_PRESSURE PRESSURE
00060   * @{
00061   */
00062 
00063 /** @defgroup STM32L475E_IOT01_PRESSURE_Private_Variables PRESSURE Private Variables 
00064   * @{
00065   */ 
00066 static PSENSOR_DrvTypeDef *Psensor_drv;  
00067 /**
00068   * @}
00069   */
00070 
00071 /** @defgroup STM32L475E_IOT01_PRESSURE_Private_Functions PRESSURE Private Functions
00072   * @{
00073   */ 
00074 
00075 /**
00076   * @brief  Initializes peripherals used by the I2C Pressure Sensor driver.
00077   * @retval PSENSOR status
00078   */
00079 uint32_t BSP_PSENSOR_Init(void)
00080 {
00081   uint32_t ret;
00082    
00083   if(LPS22HB_P_Drv.ReadID(LPS22HB_I2C_ADDRESS) != LPS22HB_WHO_AM_I_VAL)
00084   {
00085     ret = PSENSOR_ERROR;
00086   }
00087   else
00088   {
00089      Psensor_drv = &LPS22HB_P_Drv;
00090      
00091     /* PSENSOR Init */   
00092     Psensor_drv->Init(LPS22HB_I2C_ADDRESS);
00093     ret = PSENSOR_OK;
00094   }
00095   
00096   return ret;
00097 }
00098 
00099 /**
00100   * @brief  Read ID of LPS22HB.
00101   * @retval LPS22HB ID value.
00102   */
00103 uint8_t BSP_PSENSOR_ReadID(void)
00104 { 
00105   return Psensor_drv->ReadID(LPS22HB_I2C_ADDRESS);
00106 }
00107 
00108 /**
00109   * @brief  Read Pressure register of LPS22HB.
00110   * @retval LPS22HB measured pressure value.
00111   */
00112 float BSP_PSENSOR_ReadPressure(void)
00113 { 
00114   return Psensor_drv->ReadPressure(LPS22HB_I2C_ADDRESS);
00115 }
00116 /**
00117   * @}
00118   */
00119 
00120 /**
00121   * @}
00122   */
00123 
00124 /**
00125   * @}
00126   */
00127 
00128 /**
00129   * @}
00130   */
00131 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/