Diff: Drivers/BSP/Components/lps22hb/lps22hb.c

Revision:

4:137bb367ba50

Child:

7:bfe8272ced90

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Drivers/BSP/Components/lps22hb/lps22hb.c	Fri Apr 14 13:09:54 2017 +0200
@@ -0,0 +1,246 @@
+/**
+ ******************************************************************************
+ * @file    lps22hb.c
+ * @author  MCD Application Team
+ * @version V1.0.0
+ * @date    14-February-2017
+ * @brief   This file provides a set of functions needed to manage the LPS22HB
+ *          pressure and temperature devices
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "lps22hb.h"
+
+/** @addtogroup BSP
+  * @{
+  */
+
+/** @addtogroup Component
+  * @{
+  */
+
+/** @defgroup LPS22HB LPS22HB
+  * @{
+  */
+
+/** @defgroup LPS22HB_Private_FunctionsPrototypes LPS22HB Private Functions Prototypes
+  * @{
+  */
+static void LPS22HB_Init(uint16_t DeviceAddr);
+/**
+  * @}
+  */
+
+/** @defgroup LPS22HB_Private_Variables LPS22HB Private Variables
+  * @{
+  */
+/* Pressure Private Variables */
+PSENSOR_DrvTypeDef LPS22HB_P_Drv =
+{
+  LPS22HB_P_Init,
+  LPS22HB_P_ReadID,
+  LPS22HB_P_ReadPressure
+};
+
+/* Temperature Private Variables */ 
+TSENSOR_DrvTypeDef LPS22HB_T_Drv =
+{
+  LPS22HB_T_Init,
+  0,
+  0,
+  LPS22HB_T_ReadTemp
+};
+/**
+  * @}
+  */ 
+
+/** @defgroup LPS22HB_Pressure_Private_Functions LPS22HB Pressure Private Functions
+  * @{
+  */
+/**
+  * @brief  Set LPS22HB pressure sensor Initialization.
+  */
+void LPS22HB_P_Init(uint16_t DeviceAddr)
+{
+  LPS22HB_Init(DeviceAddr);
+}
+
+/**
+  * @brief  Read LPS22HB ID.
+  * @retval ID 
+  */
+uint8_t LPS22HB_P_ReadID(uint16_t DeviceAddr)
+{  
+  uint8_t ctrl = 0x00;
+
+  /* IO interface initialization */
+  SENSOR_IO_Init();  
+  
+  /* Read value at Who am I register address */
+  ctrl = SENSOR_IO_Read(DeviceAddr, LPS22HB_WHO_AM_I_REG);
+  
+  return ctrl;
+}
+
+/**
+  * @brief  Read pressure value of LPS22HB
+  * @retval pressure value
+  */
+float LPS22HB_P_ReadPressure(uint16_t DeviceAddr)
+{
+  int32_t raw_press;
+  uint8_t buffer[3];
+  uint32_t tmp = 0;
+  uint8_t i;
+
+  for(i = 0; i < 3; i++)
+  {
+    buffer[i] = SENSOR_IO_Read(DeviceAddr, (LPS22HB_PRESS_OUT_XL_REG + i));
+  }
+
+  /* Build the raw data */
+  for(i = 0; i < 3; i++)
+    tmp |= (((uint32_t)buffer[i]) << (8 * i));
+
+  /* convert the 2's complement 24 bit to 2's complement 32 bit */
+  if(tmp & 0x00800000)
+    tmp |= 0xFF000000;
+
+  raw_press = ((int32_t)tmp);
+
+  raw_press = (raw_press * 100) / 4096;
+
+  return (float)((float)raw_press / 100.0f);
+}
+
+
+/**
+  * @}
+  */ 
+
+/** @defgroup LPS22HB_Temperature_Private_Functions LPS22HB Temperature Private Functions
+  * @{
+  */
+
+/**
+  * @brief  Set LPS22HB temperature sensor Initialization.
+  * @param  DeviceAddr: I2C device address
+  * @param  InitStruct: pointer to a TSENSOR_InitTypeDef structure 
+  *         that contains the configuration setting for the HTS221.
+  * @retval None
+  */
+void LPS22HB_T_Init(uint16_t DeviceAddr, TSENSOR_InitTypeDef *pInitStruct)
+{  
+  LPS22HB_Init(DeviceAddr);
+}
+
+/**
+  * @brief  Read temperature value of LPS22HB
+  * @param  DeviceAddr: I2C device address
+  * @retval temperature value
+  */
+float LPS22HB_T_ReadTemp(uint16_t DeviceAddr)
+{
+  int16_t raw_data;
+  uint8_t buffer[2];
+  uint16_t tmp;
+  uint8_t i;
+
+  for(i = 0; i < 2; i++)
+  {
+    buffer[i] = SENSOR_IO_Read(DeviceAddr, (LPS22HB_TEMP_OUT_L_REG + i));
+  }
+
+  /* Build the raw tmp */
+  tmp = (((uint16_t)buffer[1]) << 8) + (uint16_t)buffer[0];
+
+  raw_data = (tmp * 10) / 100;
+  
+  return ((float)(raw_data / 10.0f));
+}
+
+/**
+  * @}
+  */
+
+/** @addtogroup LPS22HB_Private_Functions LPS22HB Private functions
+ * @{
+ */
+
+/**
+  * @brief  Set LPS22HB Initialization.
+  * @param  DeviceAddr: I2C device address
+  * @retval None
+  */
+static void LPS22HB_Init(uint16_t DeviceAddr)
+{
+  uint8_t tmp;
+
+  /* Set Power mode */
+  tmp = SENSOR_IO_Read(DeviceAddr, LPS22HB_RES_CONF_REG);
+
+  tmp &= ~LPS22HB_LCEN_MASK;
+  tmp |= (uint8_t)0x01; /* Set low current mode */
+
+  SENSOR_IO_Write(DeviceAddr, LPS22HB_RES_CONF_REG, tmp);
+
+  /* Read CTRL_REG1 */
+  tmp = SENSOR_IO_Read(DeviceAddr, LPS22HB_CTRL_REG1);
+
+  /* Set default ODR */
+  tmp &= ~LPS22HB_ODR_MASK;
+  tmp |= (uint8_t)0x30; /* Set ODR to 25Hz */
+
+  /* Enable BDU */
+  tmp &= ~LPS22HB_BDU_MASK;
+  tmp |= ((uint8_t)0x02);
+
+  /* Apply settings to CTRL_REG1 */
+  SENSOR_IO_Write(DeviceAddr, LPS22HB_CTRL_REG1, tmp);
+}  
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */
+  
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/