From 7c0ef447ed0590fe0162691f801b173f7d518609 Mon Sep 17 00:00:00 2001 From: Rocco Marco Guglielmi Date: Tue, 27 Sep 2016 15:05:27 +0000 Subject: ChibiOS/EX: added support for HTS221 humidity and temperature MEMS git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9806 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/ex/ST/hts221.h | 408 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 408 insertions(+) create mode 100644 os/ex/ST/hts221.h (limited to 'os/ex/ST/hts221.h') diff --git a/os/ex/ST/hts221.h b/os/ex/ST/hts221.h new file mode 100644 index 000000000..58c4af956 --- /dev/null +++ b/os/ex/ST/hts221.h @@ -0,0 +1,408 @@ +/* + 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 hts221.h + * @brief HTS221 MEMS interface module header. + * + * @{ + */ +#ifndef _HTS221_H_ +#define _HTS221_H_ + +#include "hal_hygrometer.h" +#include "hal_thermometer.h" + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/** + * @name Version identification + * @{ + */ +/** + * @brief HTS221 driver version string. + */ +#define EX_HTS221_VERSION "1.0.0" + +/** + * @brief HTS221 driver version major number. + */ +#define EX_HTS221_MAJOR 1 + +/** + * @brief HTS221 driver version minor number. + */ +#define EX_HTS221_MINOR 0 + +/** + * @brief HTS221 driver version patch number. + */ +#define EX_HTS221_PATCH 0 +/** @} */ + +/** + * @brief HTS221 characteristics. + * + * @{ + */ +#define HTS221_HYGRO_NUMBER_OF_AXES 1U +#define HTS221_THERMO_NUMBER_OF_AXES 1U + +#define HTS221_HYGRO_SENS 256.0f /**< LSB/%rH */ +#define HTS221_THERMO_SENS 64.0f /**< LSB/°C */ +/** @} */ + +/** + * @name HTS221 communication interfaces related bit masks + * @{ + */ +#define HTS221_DI_MASK 0xFF /**< Data In mask */ +#define HTS221_DI(n) (1 << n) /**< Data In bit n */ +#define HTS221_AD_MASK 0x3F /**< Address Data mask */ +#define HTS221_AD(n) (1 << n) /**< Address Data bit n */ +#define HTS221_MS (1 << 6) /**< Multiple read write */ +#define HTS221_RW (1 << 7) /**< Read Write selector */ + +#define HTS221_SUB_MS (1 << 7) /**< Multiple RW in I2C mode*/ + +#define HTS221_SAD 0x5F /**< Slave Address */ +/** @} */ + +/** + * @name HTS221 register addresses + * @{ + */ +#define HTS221_AD_WHO_AM_I 0x0F +#define HTS221_AD_AV_CONF 0x10 +#define HTS221_AD_CTRL_REG1 0x20 +#define HTS221_AD_CTRL_REG2 0x21 +#define HTS221_AD_CTRL_REG3 0x22 +#define HTS221_AD_STATUS_REG 0x27 +#define HTS221_AD_HUMIDITY_OUT_L 0x28 +#define HTS221_AD_HUMIDITY_OUT_H 0x29 +#define HTS221_AD_TEMP_OUT_L 0x2A +#define HTS221_AD_TEMP_OUT_H 0x2B +#define HTS221_AD_CALIB_0 0x30 +#define HTS221_AD_CALIB_1 0x31 +#define HTS221_AD_CALIB_2 0x32 +#define HTS221_AD_CALIB_3 0x33 +#define HTS221_AD_CALIB_4 0x34 +#define HTS221_AD_CALIB_5 0x35 +#define HTS221_AD_CALIB_6 0x36 +#define HTS221_AD_CALIB_7 0x37 +#define HTS221_AD_CALIB_8 0x38 +#define HTS221_AD_CALIB_9 0x39 +#define HTS221_AD_CALIB_A 0x3A +#define HTS221_AD_CALIB_B 0x3B +#define HTS221_AD_CALIB_C 0x3C +#define HTS221_AD_CALIB_D 0x3D +#define HTS221_AD_CALIB_E 0x3E +#define HTS221_AD_CALIB_F 0x3F +/** @} */ + +/** + * @name HTS221_CTRL_REG1 register bits definitions + * @{ + */ +#define HTS221_CTRL_REG1_MASK 0x87 +#define HTS221_CTRL_REG1_ODR0 (1 << 0) +#define HTS221_CTRL_REG1_ODR1 (1 << 1) +#define HTS221_CTRL_REG1_BDU (1 << 2) +#define HTS221_CTRL_REG1_PD (1 << 7) +/** @} */ + +/** + * @name HTS221_CTRL_REG2 register bits definitions + * @{ + */ +#define HTS221_CTRL_REG2_MASK 0x83 +#define HTS221_CTRL_REG2_ONE_SHOT (1 << 0) +#define HTS221_CTRL_REG2_HEATER (1 << 1) +#define HTS221_CTRL_REG2_BOOT (1 << 7) +/** @} */ + +/** + * @name HTS221_CTRL_REG3 register bits definitions + * @{ + */ +#define HTS221_CTRL_REG3_MASK 0xC4 +#define HTS221_CTRL_REG3_DRDY (1 << 2) +#define HTS221_CTRL_REG3_PP_OD (1 << 6) +#define HTS221_CTRL_REG3_INT_H_L (1 << 7) +/** @} */ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @name Configuration options + * @{ + */ +/** + * @brief HTS221 SPI interface switch. + * @details If set to @p TRUE the support for SPI is included. + * @note The default is @p FALSE. + */ +#if !defined(HTS221_USE_SPI) || defined(__DOXYGEN__) +#define HTS221_USE_SPI FALSE +#endif + +/** + * @brief HTS221 I2C interface switch. + * @details If set to @p TRUE the support for I2C is included. + * @note The default is @p TRUE. + */ +#if !defined(HTS221_USE_I2C) || defined(__DOXYGEN__) +#define HTS221_USE_I2C TRUE +#endif + +/** + * @brief HTS221 advanced configurations switch. + * @details If set to @p TRUE more configurations are available. + * @note The default is @p FALSE. + */ +#if !defined(HTS221_USE_ADVANCED) || defined(__DOXYGEN__) +#define HTS221_USE_ADVANCED FALSE +#endif + +/** + * @brief HTS221 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(HTS221_SHARED_SPI) || defined(__DOXYGEN__) +#define HTS221_SHARED_I2C FALSE +#endif +/** @} */ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if !(HTS221_USE_SPI ^ HTS221_USE_I2C) +#error "HTS221_USE_SPI and HTS221_USE_I2C cannot be both true or both false" +#endif + +#if HTS221_USE_SPI && !HAL_USE_SPI +#error "HTS221_USE_SPI requires HAL_USE_SPI" +#endif + +#if HTS221_USE_SPI +#error "HTS221 over SPI still not supported" +#endif + +#if HTS221_USE_I2C && !HAL_USE_I2C +#error "HTS221_USE_I2C requires HAL_USE_I2C" +#endif + +#if HTS221_SHARED_I2C && !I2C_USE_MUTUAL_EXCLUSION +#error "HTS221_SHARED_I2C requires I2C_USE_MUTUAL_EXCLUSION" +#endif + +/* + * TODO: Add SPI support. + */ + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * @name HTS221 data structures and types. + * @{ + */ +/** + * @brief HTS221 output data rate and bandwidth. + */ +typedef enum { + HTS221_ODR_ONE_SHOT = 0x00, /**< One shot. */ + HTS221_ODR_1HZ = 0x01, /**< Output data rate 1 Hz. */ + HTS221_ODR_7HZ = 0x02, /**< Output data rate 7 Hz. */ + HTS221_ODR_12P5HZ = 0x03, /**< Output data rate 12.5 Hz. */ +}hts221_odr_t; + +/** + * @brief HTS221 humidity resolution. + */ +typedef enum { + HTS221_AVGH_4 = 0x00, /**< Number of internal average is 4. */ + HTS221_AVGH_8 = 0x01, /**< Number of internal average is 8. */ + HTS221_AVGH_16 = 0x02, /**< Number of internal average is 16. */ + HTS221_AVGH_32 = 0x03, /**< Number of internal average is 32. */ + HTS221_AVGH_64 = 0x04, /**< Number of internal average is 64. */ + HTS221_AVGH_128 = 0x05, /**< Number of internal average is 128. */ + HTS221_AVGH_256 = 0x06, /**< Number of internal average is 256. */ + HTS221_AVGH_512 = 0x07 /**< Number of internal average is 512. */ +}hts221_avgh_t; + +/** + * @brief HTS221 temperature resolution. + */ +typedef enum { + HTS221_AVGT_2 = 0x00, /**< Number of internal average is 2. */ + HTS221_AVGT_4 = 0x08, /**< Number of internal average is 4. */ + HTS221_AVGT_8 = 0x10, /**< Number of internal average is 8. */ + HTS221_AVGT_16 = 0x18, /**< Number of internal average is 16. */ + HTS221_AVGT_32 = 0x20, /**< Number of internal average is 32. */ + HTS221_AVGT_64 = 0x28, /**< Number of internal average is 64. */ + HTS221_AVGT_128 = 0x30, /**< Number of internal average is 128. */ + HTS221_AVGT_256 = 0x38, /**< Number of internal average is 256. */ +}hts221_avgt_t; + +/** + * @brief HTS221 block data update. + */ +typedef enum { + HTS221_BDU_CONTINUOUS = 0x00, /**< Block data continuously updated. */ + HTS221_BDU_BLOCKED = 0x40 /**< Block data updated after reading. */ +}hts221_bdu_t; + +/** + * @brief Driver state machine possible states. + */ +typedef enum { + HTS221_UNINIT = 0, /**< Not initialized. */ + HTS221_STOP = 1, /**< Stopped. */ + HTS221_READY = 2, /**< Ready. */ +} hts221_state_t; + +/** + * @brief HTS221 configuration structure. + */ +typedef struct { + +#if HTS221_USE_SPI || defined(__DOXYGEN__) + /** + * @brief SPI driver associated to this HTS221. + */ + SPIDriver *spip; + /** + * @brief SPI configuration associated to this HTS221. + */ + const SPIConfig *spicfg; +#endif /* HTS221_USE_SPI */ +#if HTS221_USE_I2C || defined(__DOXYGEN__) + /** + * @brief I2C driver associated to this HTS221. + */ + I2CDriver *i2cp; + /** + * @brief I2C configuration associated to this HTS221. + */ + const I2CConfig *i2ccfg; +#endif /* HTS221_USE_I2C */ + /** + * @brief HTS221 initial sensitivity. + * @note Value are respectively related to hygrometer + * and thermometer. + */ + float* sensitivity; + /** + * @brief HTS221 initial bias. + * @note Value are respectively related to hygrometer + * and thermometer. + */ + float* bias; + /** + * @brief HTS221 output data rate selection. + */ + hts221_odr_t outputdatarate; +#if HTS221_USE_ADVANCED || defined(__DOXYGEN__) + /** + * @brief HTS221 block data update. + */ + hts221_bdu_t blockdataupdate; + /** + * @brief HTS221 humidity resolution. + */ + hts221_avgh_t reshumidity; + /** + * @brief HTS221 temperature resolution. + */ + hts221_avgt_t restemperature; +#endif +} HTS221Config; + +/** + * @brief Structure representing a HTS221 driver. + */ +typedef struct HTS221Driver HTS221Driver; + +/** + * @brief @p HTS221Driver specific data. + */ +#define _hts221_data \ + _base_hygrometer_data \ + _base_thermometer_data \ + /* Driver state.*/ \ + hts221_state_t state; \ + /* Current configuration data.*/ \ + const HTS221Config *config; \ + /* Current sensitivity data.*/ \ + float sensitivity[HTS221_HYGRO_NUMBER_OF_AXES + \ + HTS221_THERMO_NUMBER_OF_AXES]; \ + /* Current Bias data.*/ \ + float bias[HTS221_HYGRO_NUMBER_OF_AXES + \ + HTS221_THERMO_NUMBER_OF_AXES]; + +/** + * @extends BaseGyroscope + * + * @brief HTS221 3-axis barometer class. + * @details This class extends @p BaseGyroscope by adding physical + * driver implementation. + */ +struct HTS221Driver { + /** @brief BaseSensor Virtual Methods Table. */ + const struct BaseSensorVMT *vmt_basesensor; + /** @brief BaseHygrometer Virtual Methods Table. */ + const struct BaseHygrometerVMT *vmt_basehygrometer; + /** @brief BaseThermometer Virtual Methods Table. */ + const struct BaseThermometerVMT *vmt_basethermometer; + _hts221_data +}; +/** @} */ + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#ifdef __cplusplus +extern "C" { +#endif + void hts221ObjectInit(HTS221Driver *devp); + void hts221Start(HTS221Driver *devp, const HTS221Config *config); + void hts221Stop(HTS221Driver *devp); +#ifdef __cplusplus +} +#endif + +#endif /* _HTS221_H_ */ + +/** @} */ + -- cgit v1.2.3