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113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup driver_lps331ap LPS331AP Pressure Sensor Driver
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* @ingroup drivers
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* @brief Device driver for the LPS331AP pressure sensor
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* @{
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*
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* @file
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* @brief Device driver interface for the LPS331AP pressure sensor
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*
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* @note This driver uses the sensors I2C interface
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*/
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#ifndef LPS331AP_H
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#define LPS331AP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include "periph/i2c.h"
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/**
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* @brief The sensors default I2C address
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*/
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#define LPS331AP_DEFAULT_ADDRESS 0x5c
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/**
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* @brief Device descriptor for LPS331AP sensors
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*/
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typedef struct {
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i2c_t i2c; /**< I2C device the sensor is connected to */
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uint8_t address; /**< I2C bus address of the sensor */
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} lps331ap_t;
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/**
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* @brief Possible sampling rates for LPS331AP sensors
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*/
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typedef enum {
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LPS331AP_RATE_1HZ = 1, /**< sample with 1Hz */
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LPS331AP_RATE_7HZ = 5, /**< sample with 7Hz */
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LPS331AP_RATE_12HZ5 = 6, /**< sample with 12.5Hz */
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LPS331AP_RATE_25HZ = 7 /**< sample with 25Hz */
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} lps331ap_rate_t;
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/**
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* @brief Initialize a given LPS331AP pressure sensor
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*
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* @param[out] dev device descriptor of the sensor
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* @param[in] i2c I2C bus the sensor is connected to
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* @param[in] address the sensor's address on the I2C bus
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* @param[in] rate internal sampling rate of the sensor
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*
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* @return 0 on success
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* @return -1 on error
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*/
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int lps331ap_init(lps331ap_t *dev, i2c_t i2c, uint8_t address, lps331ap_rate_t rate);
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/**
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* @brief Read a temperature value from the given sensor, returned in m°C
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*
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* @param[in] dev device descriptor of sensor to read from
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*
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* @return temperature value in m°C
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*/
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int lps331ap_read_temp(lps331ap_t *dev);
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/**
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* @brief Read a pressure value from the given sensor, returned in mbar
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*
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* @param[in] dev device descriptor of sensor to read from
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*
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* @return pressure value in mbar
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*/
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int lps331ap_read_pres(lps331ap_t *dev);
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/**
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* @brief Enable the given sensor
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*
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* @param[in] dev device descriptor of sensor to enable
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*
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* @return 0 on success
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* @return -1 on error
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*/
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int lps331ap_enable(lps331ap_t *dev);
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/**
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* @brief Disable the given sensor
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*
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* @param[in] dev device descriptor of sensor to disable
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*
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* @return 0 on success
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* @return -1 on error
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*/
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int lps331ap_disable(lps331ap_t *dev);
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#ifdef __cplusplus
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}
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#endif
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#endif /* LPS331AP_H */
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/** @} */
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