ST / BSP_B-L475E-IOT01

Contains the BSP driver for the B-L475E-IOT01 board.

Dependents:   mbed-os-example-ble-Thermometer DISCO_L475VG_IOT01-Telegram-BOT DISCO_L475VG_IOT01-sche_cheveux DISCO_L475VG_IOT01-QSPI_FLASH_FILE_SYSTEM ... more

https://os.mbed.com/platforms/ST-Discovery-L475E-IOT01A/

Drivers/BSP/Components/lps22hb/lps22hb.c@7:bfe8272ced90, 2019-09-24 (annotated)

Committer:
jeromecoutant
Date:
Tue Sep 24 15:30:09 2019 +0200
Revision:
7:bfe8272ced90
Parent:
4:137bb367ba50 
Update BSP files with STM32Cube L4 V1.14.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 4:137bb367ba50 1 /**
bcostm 4:137bb367ba50 2 ******************************************************************************
bcostm 4:137bb367ba50 3 * @file lps22hb.c
bcostm 4:137bb367ba50 4 * @author MCD Application Team
bcostm 4:137bb367ba50 5 * @brief This file provides a set of functions needed to manage the LPS22HB
bcostm 4:137bb367ba50 6 * pressure and temperature devices
bcostm 4:137bb367ba50 7 ******************************************************************************
bcostm 4:137bb367ba50 8 * @attention
bcostm 4:137bb367ba50 9 *
jeromecoutant 7:bfe8272ced90 10 * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
jeromecoutant 7:bfe8272ced90 11 * All rights reserved.</center></h2>
bcostm 4:137bb367ba50 12 *
jeromecoutant 7:bfe8272ced90 13 * This software component is licensed by ST under BSD 3-Clause license,
jeromecoutant 7:bfe8272ced90 14 * the "License"; You may not use this file except in compliance with the
jeromecoutant 7:bfe8272ced90 15 * License. You may obtain a copy of the License at:
jeromecoutant 7:bfe8272ced90 16 * opensource.org/licenses/BSD-3-Clause
bcostm 4:137bb367ba50 17 *
bcostm 4:137bb367ba50 18 ******************************************************************************
bcostm 4:137bb367ba50 19 */
bcostm 4:137bb367ba50 20
bcostm 4:137bb367ba50 21 /* Includes ------------------------------------------------------------------*/
bcostm 4:137bb367ba50 22 #include "lps22hb.h"
bcostm 4:137bb367ba50 23
bcostm 4:137bb367ba50 24 /** @addtogroup BSP
bcostm 4:137bb367ba50 25 * @{
bcostm 4:137bb367ba50 26 */
bcostm 4:137bb367ba50 27
bcostm 4:137bb367ba50 28 /** @addtogroup Component
bcostm 4:137bb367ba50 29 * @{
bcostm 4:137bb367ba50 30 */
bcostm 4:137bb367ba50 31
bcostm 4:137bb367ba50 32 /** @defgroup LPS22HB LPS22HB
bcostm 4:137bb367ba50 33 * @{
bcostm 4:137bb367ba50 34 */
bcostm 4:137bb367ba50 35
bcostm 4:137bb367ba50 36 /** @defgroup LPS22HB_Private_FunctionsPrototypes LPS22HB Private Functions Prototypes
bcostm 4:137bb367ba50 37 * @{
bcostm 4:137bb367ba50 38 */
bcostm 4:137bb367ba50 39 static void LPS22HB_Init(uint16_t DeviceAddr);
bcostm 4:137bb367ba50 40 /**
bcostm 4:137bb367ba50 41 * @}
bcostm 4:137bb367ba50 42 */
bcostm 4:137bb367ba50 43
bcostm 4:137bb367ba50 44 /** @defgroup LPS22HB_Private_Variables LPS22HB Private Variables
bcostm 4:137bb367ba50 45 * @{
bcostm 4:137bb367ba50 46 */
bcostm 4:137bb367ba50 47 /* Pressure Private Variables */
bcostm 4:137bb367ba50 48 PSENSOR_DrvTypeDef LPS22HB_P_Drv =
bcostm 4:137bb367ba50 49 {
bcostm 4:137bb367ba50 50 LPS22HB_P_Init,
bcostm 4:137bb367ba50 51 LPS22HB_P_ReadID,
bcostm 4:137bb367ba50 52 LPS22HB_P_ReadPressure
bcostm 4:137bb367ba50 53 };
bcostm 4:137bb367ba50 54
bcostm 4:137bb367ba50 55 /* Temperature Private Variables */
bcostm 4:137bb367ba50 56 TSENSOR_DrvTypeDef LPS22HB_T_Drv =
bcostm 4:137bb367ba50 57 {
bcostm 4:137bb367ba50 58 LPS22HB_T_Init,
bcostm 4:137bb367ba50 59 0,
bcostm 4:137bb367ba50 60 0,
bcostm 4:137bb367ba50 61 LPS22HB_T_ReadTemp
bcostm 4:137bb367ba50 62 };
bcostm 4:137bb367ba50 63 /**
bcostm 4:137bb367ba50 64 * @}
bcostm 4:137bb367ba50 65 */
bcostm 4:137bb367ba50 66
bcostm 4:137bb367ba50 67 /** @defgroup LPS22HB_Pressure_Private_Functions LPS22HB Pressure Private Functions
bcostm 4:137bb367ba50 68 * @{
bcostm 4:137bb367ba50 69 */
bcostm 4:137bb367ba50 70 /**
bcostm 4:137bb367ba50 71 * @brief Set LPS22HB pressure sensor Initialization.
bcostm 4:137bb367ba50 72 */
bcostm 4:137bb367ba50 73 void LPS22HB_P_Init(uint16_t DeviceAddr)
bcostm 4:137bb367ba50 74 {
bcostm 4:137bb367ba50 75 LPS22HB_Init(DeviceAddr);
bcostm 4:137bb367ba50 76 }
bcostm 4:137bb367ba50 77
bcostm 4:137bb367ba50 78 /**
bcostm 4:137bb367ba50 79 * @brief Read LPS22HB ID.
bcostm 4:137bb367ba50 80 * @retval ID
bcostm 4:137bb367ba50 81 */
bcostm 4:137bb367ba50 82 uint8_t LPS22HB_P_ReadID(uint16_t DeviceAddr)
bcostm 4:137bb367ba50 83 {
bcostm 4:137bb367ba50 84 uint8_t ctrl = 0x00;
bcostm 4:137bb367ba50 85
bcostm 4:137bb367ba50 86 /* IO interface initialization */
bcostm 4:137bb367ba50 87 SENSOR_IO_Init();
bcostm 4:137bb367ba50 88
bcostm 4:137bb367ba50 89 /* Read value at Who am I register address */
bcostm 4:137bb367ba50 90 ctrl = SENSOR_IO_Read(DeviceAddr, LPS22HB_WHO_AM_I_REG);
bcostm 4:137bb367ba50 91
bcostm 4:137bb367ba50 92 return ctrl;
bcostm 4:137bb367ba50 93 }
bcostm 4:137bb367ba50 94
bcostm 4:137bb367ba50 95 /**
bcostm 4:137bb367ba50 96 * @brief Read pressure value of LPS22HB
bcostm 4:137bb367ba50 97 * @retval pressure value
bcostm 4:137bb367ba50 98 */
bcostm 4:137bb367ba50 99 float LPS22HB_P_ReadPressure(uint16_t DeviceAddr)
bcostm 4:137bb367ba50 100 {
bcostm 4:137bb367ba50 101 int32_t raw_press;
bcostm 4:137bb367ba50 102 uint8_t buffer[3];
bcostm 4:137bb367ba50 103 uint32_t tmp = 0;
bcostm 4:137bb367ba50 104 uint8_t i;
bcostm 4:137bb367ba50 105
bcostm 4:137bb367ba50 106 for(i = 0; i < 3; i++)
bcostm 4:137bb367ba50 107 {
bcostm 4:137bb367ba50 108 buffer[i] = SENSOR_IO_Read(DeviceAddr, (LPS22HB_PRESS_OUT_XL_REG + i));
bcostm 4:137bb367ba50 109 }
bcostm 4:137bb367ba50 110
bcostm 4:137bb367ba50 111 /* Build the raw data */
bcostm 4:137bb367ba50 112 for(i = 0; i < 3; i++)
bcostm 4:137bb367ba50 113 tmp |= (((uint32_t)buffer[i]) << (8 * i));
bcostm 4:137bb367ba50 114
bcostm 4:137bb367ba50 115 /* convert the 2's complement 24 bit to 2's complement 32 bit */
bcostm 4:137bb367ba50 116 if(tmp & 0x00800000)
bcostm 4:137bb367ba50 117 tmp |= 0xFF000000;
bcostm 4:137bb367ba50 118
bcostm 4:137bb367ba50 119 raw_press = ((int32_t)tmp);
bcostm 4:137bb367ba50 120
bcostm 4:137bb367ba50 121 raw_press = (raw_press * 100) / 4096;
bcostm 4:137bb367ba50 122
bcostm 4:137bb367ba50 123 return (float)((float)raw_press / 100.0f);
bcostm 4:137bb367ba50 124 }
bcostm 4:137bb367ba50 125
bcostm 4:137bb367ba50 126
bcostm 4:137bb367ba50 127 /**
bcostm 4:137bb367ba50 128 * @}
bcostm 4:137bb367ba50 129 */
bcostm 4:137bb367ba50 130
bcostm 4:137bb367ba50 131 /** @defgroup LPS22HB_Temperature_Private_Functions LPS22HB Temperature Private Functions
bcostm 4:137bb367ba50 132 * @{
bcostm 4:137bb367ba50 133 */
bcostm 4:137bb367ba50 134
bcostm 4:137bb367ba50 135 /**
bcostm 4:137bb367ba50 136 * @brief Set LPS22HB temperature sensor Initialization.
bcostm 4:137bb367ba50 137 * @param DeviceAddr: I2C device address
bcostm 4:137bb367ba50 138 * @param InitStruct: pointer to a TSENSOR_InitTypeDef structure
bcostm 4:137bb367ba50 139 * that contains the configuration setting for the HTS221.
bcostm 4:137bb367ba50 140 * @retval None
bcostm 4:137bb367ba50 141 */
bcostm 4:137bb367ba50 142 void LPS22HB_T_Init(uint16_t DeviceAddr, TSENSOR_InitTypeDef *pInitStruct)
bcostm 4:137bb367ba50 143 {
bcostm 4:137bb367ba50 144 LPS22HB_Init(DeviceAddr);
bcostm 4:137bb367ba50 145 }
bcostm 4:137bb367ba50 146
bcostm 4:137bb367ba50 147 /**
bcostm 4:137bb367ba50 148 * @brief Read temperature value of LPS22HB
bcostm 4:137bb367ba50 149 * @param DeviceAddr: I2C device address
bcostm 4:137bb367ba50 150 * @retval temperature value
bcostm 4:137bb367ba50 151 */
bcostm 4:137bb367ba50 152 float LPS22HB_T_ReadTemp(uint16_t DeviceAddr)
bcostm 4:137bb367ba50 153 {
bcostm 4:137bb367ba50 154 int16_t raw_data;
bcostm 4:137bb367ba50 155 uint8_t buffer[2];
bcostm 4:137bb367ba50 156 uint16_t tmp;
bcostm 4:137bb367ba50 157 uint8_t i;
bcostm 4:137bb367ba50 158
bcostm 4:137bb367ba50 159 for(i = 0; i < 2; i++)
bcostm 4:137bb367ba50 160 {
bcostm 4:137bb367ba50 161 buffer[i] = SENSOR_IO_Read(DeviceAddr, (LPS22HB_TEMP_OUT_L_REG + i));
bcostm 4:137bb367ba50 162 }
bcostm 4:137bb367ba50 163
bcostm 4:137bb367ba50 164 /* Build the raw tmp */
bcostm 4:137bb367ba50 165 tmp = (((uint16_t)buffer[1]) << 8) + (uint16_t)buffer[0];
bcostm 4:137bb367ba50 166
bcostm 4:137bb367ba50 167 raw_data = (tmp * 10) / 100;
bcostm 4:137bb367ba50 168
bcostm 4:137bb367ba50 169 return ((float)(raw_data / 10.0f));
bcostm 4:137bb367ba50 170 }
bcostm 4:137bb367ba50 171
bcostm 4:137bb367ba50 172 /**
bcostm 4:137bb367ba50 173 * @}
bcostm 4:137bb367ba50 174 */
bcostm 4:137bb367ba50 175
bcostm 4:137bb367ba50 176 /** @addtogroup LPS22HB_Private_Functions LPS22HB Private functions
bcostm 4:137bb367ba50 177 * @{
bcostm 4:137bb367ba50 178 */
bcostm 4:137bb367ba50 179
bcostm 4:137bb367ba50 180 /**
bcostm 4:137bb367ba50 181 * @brief Set LPS22HB Initialization.
bcostm 4:137bb367ba50 182 * @param DeviceAddr: I2C device address
bcostm 4:137bb367ba50 183 * @retval None
bcostm 4:137bb367ba50 184 */
bcostm 4:137bb367ba50 185 static void LPS22HB_Init(uint16_t DeviceAddr)
bcostm 4:137bb367ba50 186 {
bcostm 4:137bb367ba50 187 uint8_t tmp;
bcostm 4:137bb367ba50 188
bcostm 4:137bb367ba50 189 /* Set Power mode */
bcostm 4:137bb367ba50 190 tmp = SENSOR_IO_Read(DeviceAddr, LPS22HB_RES_CONF_REG);
bcostm 4:137bb367ba50 191
bcostm 4:137bb367ba50 192 tmp &= ~LPS22HB_LCEN_MASK;
bcostm 4:137bb367ba50 193 tmp |= (uint8_t)0x01; /* Set low current mode */
bcostm 4:137bb367ba50 194
bcostm 4:137bb367ba50 195 SENSOR_IO_Write(DeviceAddr, LPS22HB_RES_CONF_REG, tmp);
bcostm 4:137bb367ba50 196
bcostm 4:137bb367ba50 197 /* Read CTRL_REG1 */
bcostm 4:137bb367ba50 198 tmp = SENSOR_IO_Read(DeviceAddr, LPS22HB_CTRL_REG1);
bcostm 4:137bb367ba50 199
bcostm 4:137bb367ba50 200 /* Set default ODR */
bcostm 4:137bb367ba50 201 tmp &= ~LPS22HB_ODR_MASK;
bcostm 4:137bb367ba50 202 tmp |= (uint8_t)0x30; /* Set ODR to 25Hz */
bcostm 4:137bb367ba50 203
bcostm 4:137bb367ba50 204 /* Enable BDU */
bcostm 4:137bb367ba50 205 tmp &= ~LPS22HB_BDU_MASK;
bcostm 4:137bb367ba50 206 tmp |= ((uint8_t)0x02);
bcostm 4:137bb367ba50 207
bcostm 4:137bb367ba50 208 /* Apply settings to CTRL_REG1 */
bcostm 4:137bb367ba50 209 SENSOR_IO_Write(DeviceAddr, LPS22HB_CTRL_REG1, tmp);
bcostm 4:137bb367ba50 210 }
bcostm 4:137bb367ba50 211
bcostm 4:137bb367ba50 212 /**
bcostm 4:137bb367ba50 213 * @}
bcostm 4:137bb367ba50 214 */
bcostm 4:137bb367ba50 215
bcostm 4:137bb367ba50 216 /**
bcostm 4:137bb367ba50 217 * @}
bcostm 4:137bb367ba50 218 */
bcostm 4:137bb367ba50 219
bcostm 4:137bb367ba50 220 /**
bcostm 4:137bb367ba50 221 * @}
bcostm 4:137bb367ba50 222 */
bcostm 4:137bb367ba50 223
bcostm 4:137bb367ba50 224 /**
bcostm 4:137bb367ba50 225 * @}
bcostm 4:137bb367ba50 226 */
bcostm 4:137bb367ba50 227
bcostm 4:137bb367ba50 228 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/