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/*
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 <http://www.gnu.org/licenses/>.
*/
/**
* @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 "1.0.4"
/**
* @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 4
/** @} */
/**
* @brief LPS25H characteristics.
*
* @{
*/
#define LPS25H_NUMBER_OF_AXES 1U
#define LPS25H_SENS 0.00024414f
/** @} */
/**
* @name LPS25H communication interfaces related bit masks
* @{
*/
#define LPS25H_DI_MASK 0xFF
#define LPS25H_DI(n) (1 << n)
#define LPS25H_AD_MASK 0x3F
#define LPS25H_AD(n) (1 << n)
#define LPS25H_MS (1 << 6)
#define LPS25H_RW (1 << 7)
#define LPS25H_SUB_MS (1 << 7)
/** @} */
/**
* @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 @p LPS25H barometer subsystem specific methods.
* @note No methods so far, just a common ancestor interface.
*/
#define _lps25h_barometer_methods_alone
/**
* @brief @p LPS25H barometer subsystem specific methods.
*/
#define _lps25h_barometer_methods \
_base_barometer_methods \
_lps25h_barometer_methods_alone
/**
* @extends BaseBarometerVMT
*
* @brief @p LPS25H barometer virtual methods table.
*/
struct LPS25HBarometerVMT {
_lps25h_barometer_methods
};
/**
* @brief @p LPS25HDriver specific data.
*/
#define _lps25h_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_sensor;
_base_sensor_data
/** @brief LPS25H Barometer Virtual Methods Table. */
const struct LPS25HBarometerVMT *vmt_barometer;
_base_barometer_data
_lps25h_data
};
/**
* @brief Structure representing a LPS25H driver.
*/
typedef struct LPS25HDriver LPS25HDriver;
/** @} */
/*===========================================================================*/
/* 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_ */
/** @} */
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