/* ChibiOS - Copyright (C) 2016 Rocco Marco Guglielmi This file is part of ChibiOS. ChibiOS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. ChibiOS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /** * @file lps25h.h * @brief LPS25H MEMS interface module header. * * @addtogroup LPS25H * @ingroup EX_ST * @{ */ #ifndef _LPS25H_H_ #define _LPS25H_H_ #include "hal_barometer.h" /*===========================================================================*/ /* Driver constants. */ /*===========================================================================*/ /** * @name Version identification * @{ */ /** * @brief LPS25H driver version string. */ #define EX_LPS25H_VERSION "1.0.3" /** * @brief LPS25H driver version major number. */ #define EX_LPS25H_MAJOR 1 /** * @brief LPS25H driver version minor number. */ #define EX_LPS25H_MINOR 0 /** * @brief LPS25H driver version patch number. */ #define EX_LPS25H_PATCH 3 /** @} */ /** * @brief LPS25H characteristics. * * @{ */ #define LPS25H_NUMBER_OF_AXES 1U #define LPS25H_SENS 0.00024414f /**< hPa/LSB */ /** @} */ /** * @name LPS25H communication interfaces related bit masks * @{ */ #define LPS25H_DI_MASK 0xFF /**< Data In mask */ #define LPS25H_DI(n) (1 << n) /**< Data In bit n */ #define LPS25H_AD_MASK 0x3F /**< Address Data mask */ #define LPS25H_AD(n) (1 << n) /**< Address Data bit n */ #define LPS25H_MS (1 << 6) /**< Multiple read write */ #define LPS25H_RW (1 << 7) /**< Read Write selector */ #define LPS25H_SUB_MS (1 << 7) /**< Multiple read write in I2C mode */ /** @} */ /** * @name LPS25H register addresses * @{ */ #define LPS25H_AD_REF_P_XL 0x08 #define LPS25H_AD_REF_P_L 0x09 #define LPS25H_AD_REF_P_H 0x0A #define LPS25H_AD_WHO_AM_I 0x0F #define LPS25H_AD_RES_CONF 0x10 #define LPS25H_AD_CTRL_REG1 0x20 #define LPS25H_AD_CTRL_REG2 0x21 #define LPS25H_AD_CTRL_REG3 0x22 #define LPS25H_AD_CTRL_REG4 0x23 #define LPS25H_AD_INT_CFG 0x24 #define LPS25H_AD_INT_SRC 0x25 #define LPS25H_AD_STATUS_REG 0x27 #define LPS25H_AD_PRESS_OUT_XL 0x28 #define LPS25H_AD_PRESS_OUT_L 0x29 #define LPS25H_AD_PRESS_OUT_H 0x2A #define LPS25H_AD_TEMP_OUT_L 0x2B #define LPS25H_AD_TEMP_OUT_H 0x2C #define LPS25H_AD_FIFO_CTRL 0x2E #define LPS25H_AD_FIFO_SRC 0x2F #define LPS25H_AD_THS_P_L 0x30 #define LPS25H_AD_THS_P_H 0x31 #define LPS25H_AD_RPDS_L 0x39 #define LPS25H_AD_RPDS_H 0x3A /** @} */ /** * @name LPS25H_CTRL_REG1 register bits definitions * @{ */ #define LPS25H_CTRL_REG1_MASK 0xFF #define LPS25H_CTRL_REG1_SIM (1 << 0) #define LPS25H_CTRL_REG1_RESET_AZ (1 << 1) #define LPS25H_CTRL_REG1_BDU (1 << 2) #define LPS25H_CTRL_REG1_DIFF_EN (1 << 3) #define LPS25H_CTRL_REG1_ODR0 (1 << 4) #define LPS25H_CTRL_REG1_ODR1 (1 << 5) #define LPS25H_CTRL_REG1_ODR2 (1 << 6) #define LPS25H_CTRL_REG1_PD (1 << 7) /** @} */ /** * @name LPS25H_CTRL_REG2 register bits definitions * @{ */ #define LPS25H_CTRL_REG2_MASK 0xF3 #define LPS25H_CTRL_REG2_ONE_SHOT (1 << 0) #define LPS25H_CTRL_REG2_AUTO_ZERO (1 << 1) #define LPS25H_CTRL_REG2_SWRESET (1 << 2) #define LPS25H_CTRL_REG2_FIFO_MEAN_DEC (1 << 4) #define LPS25H_CTRL_REG2_WTM_EN (1 << 5) #define LPS25H_CTRL_REG2_FIFO_EN (1 << 6) #define LPS25H_CTRL_REG2_BOOT (1 << 7) /** @} */ /** * @name LPS25H_CTRL_REG3 register bits definitions * @{ */ #define LPS25H_CTRL_REG3_MASK 0xC3 #define LPS25H_CTRL_REG3_INT_S1 (1 << 0) #define LPS25H_CTRL_REG3_INT_S2 (1 << 1) #define LPS25H_CTRL_REG3_PP_OD (1 << 6) #define LPS25H_CTRL_REG3_INT_H_L (1 << 7) /** @} */ /** * @name LPS25H_CTRL_REG4 register bits definitions * @{ */ #define LPS25H_CTRL_REG4_MASK 0x0F #define LPS25H_CTRL_REG4_P1_DRDY (1 << 0) #define LPS25H_CTRL_REG4_P1_OVERRUN (1 << 1) #define LPS25H_CTRL_REG4_P1_WTM (1 << 2) #define LPS25H_CTRL_REG4_P1_EMPTY (1 << 3) /** @} */ /** * @name LPS25H_INT1_CFG register bits definitions * @{ */ #define LPS25H_INT1_CFG_MASK 0x07 #define LPS25H_INT1_CFG_PH_E (1 << 0) #define LPS25H_INT1_CFG_PL_E (1 << 1) #define LPS25H_INT1_CFG_LIR (1 << 2) /** @} */ /** * @name LPS25H_INT1_SRC register bits definitions * @{ */ #define LPS25H_INT1_SRC_MASK 0x07 #define LPS25H_INT1_SRC_PH (1 << 0) #define LPS25H_INT1_SRC_PL (1 << 1) #define LPS25H_INT1_SRC_IA (1 << 2) /** @} */ /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ /** * @name Configuration options * @{ */ /** * @brief LPS25H SPI interface switch. * @details If set to @p TRUE the support for SPI is included. * @note The default is @p FALSE. */ #if !defined(LPS25H_USE_SPI) || defined(__DOXYGEN__) #define LPS25H_USE_SPI FALSE #endif /** * @brief LPS25H I2C interface switch. * @details If set to @p TRUE the support for I2C is included. * @note The default is @p TRUE. */ #if !defined(LPS25H_USE_I2C) || defined(__DOXYGEN__) #define LPS25H_USE_I2C TRUE #endif /** * @brief LPS25H advanced configurations switch. * @details If set to @p TRUE more configurations are available. * @note The default is @p FALSE. */ #if !defined(LPS25H_USE_ADVANCED) || defined(__DOXYGEN__) #define LPS25H_USE_ADVANCED FALSE #endif /** * @brief LPS25H shared I2C switch. * @details If set to @p TRUE the device acquires I2C bus ownership * on each transaction. * @note The default is @p FALSE. Requires I2C_USE_MUTUAL_EXCLUSION */ #if !defined(LPS25H_SHARED_I2C) || defined(__DOXYGEN__) #define LPS25H_SHARED_I2C FALSE #endif /** @} */ /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ #if !(LPS25H_USE_SPI ^ LPS25H_USE_I2C) #error "LPS25H_USE_SPI and LPS25H_USE_I2C cannot be both true or both false" #endif #if LPS25H_USE_SPI && !HAL_USE_SPI #error "LPS25H_USE_SPI requires HAL_USE_SPI" #endif #if LPS25H_USE_SPI #error "LPS25H over SPI still not supported" #endif #if LPS25H_USE_I2C && !HAL_USE_I2C #error "LPS25H_USE_I2C requires HAL_USE_I2C" #endif #if LPS25H_SHARED_I2C && !I2C_USE_MUTUAL_EXCLUSION #error "LPS25H_SHARED_I2C requires I2C_USE_MUTUAL_EXCLUSION" #endif /* * TODO: Add SPI support. */ /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ /** * @name LPS25H data structures and types. * @{ */ /** * @brief LPS25H slave address */ typedef enum { LPS25H_SAD_GND = 0x5C, /**< Slave Address when SA0 is to GND */ LPS25H_SAD_VCC = 0x5D /**< Slave Address when SA0 is to VCC */ }lps25h_sad_t; /** * @brief LPS25H output data rate and bandwidth. */ typedef enum { LPS25H_ODR_ONE_SHOT = 0x00, /**< One shot. */ LPS25H_ODR_1HZ = 0x10, /**< Output data rate 1 Hz. */ LPS25H_ODR_7HZ = 0x20, /**< Output data rate 7 Hz. */ LPS25H_ODR_12P5HZ = 0x30, /**< Output data rate 12.5 Hz. */ LPS25H_ODR_25HZ = 0x40 /**< Output data rate 25 Hz. */ }lps25h_odr_t; /** * @brief LPS25H pressure resolution. */ typedef enum { LPS25H_AVGP_8 = 0x00, /**< Number of internal average is 8. */ LPS25H_AVGP_32 = 0x01, /**< Number of internal average is 32. */ LPS25H_AVGP_128 = 0x02, /**< Number of internal average is 128. */ LPS25H_AVGP_512 = 0x03, /**< Number of internal average is 512. */ }lps25h_avgp_t; /** * @brief LPS25H temperature resolution. */ typedef enum { LPS25H_AVGT_8 = 0x00, /**< Number of internal average is 8. */ LPS25H_AVGT_32 = 0x04, /**< Number of internal average is 32. */ LPS25H_AVGT_128 = 0x08, /**< Number of internal average is 128. */ LPS25H_AVGT_512 = 0x0C, /**< Number of internal average is 512. */ }lps25h_avgt_t; /** * @brief LPS25H block data update. */ typedef enum { LPS25H_BDU_CONTINUOUS = 0x00, /**< Block data continuously updated. */ LPS25H_BDU_BLOCKED = 0x40 /**< Block data updated after reading. */ }lps25h_bdu_t; /** * @brief Driver state machine possible states. */ typedef enum { LPS25H_UNINIT = 0, /**< Not initialized. */ LPS25H_STOP = 1, /**< Stopped. */ LPS25H_READY = 2, /**< Ready. */ } lps25h_state_t; /** * @brief LPS25H configuration structure. */ typedef struct { #if LPS25H_USE_SPI || defined(__DOXYGEN__) /** * @brief SPI driver associated to this LPS25H. */ SPIDriver *spip; /** * @brief SPI configuration associated to this LPS25H. */ const SPIConfig *spicfg; #endif /* LPS25H_USE_SPI */ #if LPS25H_USE_I2C || defined(__DOXYGEN__) /** * @brief I2C driver associated to this LPS25H. */ I2CDriver *i2cp; /** * @brief I2C configuration associated to this LPS25H. */ const I2CConfig *i2ccfg; #endif /* LPS25H_USE_I2C */ /** * @brief LPS25H initial sensitivity. */ float* sensitivity; /** * @brief LPS25H initial bias. */ float* bias; /** * @brief LPS25H slave address */ lps25h_sad_t slaveaddress; /** * @brief LPS25H output data rate selection. */ lps25h_odr_t outputdatarate; #if LPS25H_USE_ADVANCED || defined(__DOXYGEN__) /** * @brief LPS25H block data update. */ lps25h_bdu_t blockdataupdate; /** * @brief LPS25H pressure resolution. */ lps25h_avgp_t respressure; /** * @brief LPS25H temperature resolution. */ lps25h_avgt_t restemperature; #endif } LPS25HConfig; /** * @brief Structure representing a LPS25H driver. */ typedef struct LPS25HDriver LPS25HDriver; /** * @brief @p LPS25HDriver specific data. */ #define _lps25h_data \ _base_barometer_data \ /* Driver state.*/ \ lps25h_state_t state; \ /* Current configuration data.*/ \ const LPS25HConfig *config; \ /* Current sensitivity data.*/ \ float sensitivity; \ /* Current Bias data.*/ \ float bias; /** * @extends BaseGyroscope * * @brief LPS25H 3-axis barometer class. * @details This class extends @p BaseGyroscope by adding physical * driver implementation. */ struct LPS25HDriver { /** @brief BaseSensor Virtual Methods Table. */ const struct BaseSensorVMT *vmt_basesensor; /** @brief BaseBarometer Virtual Methods Table. */ const struct BaseBarometerVMT *vmt_basebarometer; /** @brief LPS25H Virtual Methods Table. */ const struct LPS25HVMT *vmt_lps25h; _lps25h_data }; /** @} */ /*===========================================================================*/ /* Driver macros. */ /*===========================================================================*/ /*===========================================================================*/ /* External declarations. */ /*===========================================================================*/ #ifdef __cplusplus extern "C" { #endif void lps25hObjectInit(LPS25HDriver *devp); void lps25hStart(LPS25HDriver *devp, const LPS25HConfig *config); void lps25hStop(LPS25HDriver *devp); #ifdef __cplusplus } #endif #endif /* _LPS25H_H_ */ /** @} */