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/*
* Copyright (C) 2015 Eistec AB
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup drivers_hih6130 HIH6130 humidity and temperature sensor
* @ingroup drivers_sensors
* @brief Device driver for Honeywell HumidIcon Digital
* Humidity/Temperature Sensors: HIH-6130/6131 Series
* @{
*
* @file
* @brief Device driver for Honeywell HumidIcon Digital
* Humidity/Temperature Sensors: HIH-6130/6131 Series
*
* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
*/
#ifndef HIH6130_H_
#define HIH6130_H_
#include <stdint.h>
#include "periph/i2c.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Device descriptor for HIH6130/HIH6131 sensors
*/
typedef struct {
i2c_t i2c; /**< I2C device the sensor is connected to */
uint8_t addr; /**< the slave address of the sensor on the I2C bus */
} hih6130_t;
/**
* @brief Initialize a sensor
*
* @param[out] dev device descriptor of sensor to initialize
* @param[in] i2c I2C bus the sensor is connected to
* @param[in] address I2C slave address of the sensor
*/
void hih6130_init(hih6130_t *dev, i2c_t i2c, uint8_t address);
/**
* @brief Read humidity and temperature from sensor and convert to floating-point
*
* @param[in] dev Sensor device descriptor
* @param[out] relative_humidity_percent Measured relative humidity in percent
* @param[out] temperature_celsius Measured temperature in degrees Celsius
*
* @return 0 on success
* @return -1 on error
* @return 1 if data is stale
*/
int hih6130_get_humidity_temperature_float(hih6130_t *dev,
float *relative_humidity_percent, float *temperature_celsius);
#ifdef __cplusplus
}
#endif
#endif /* HIH6130_H_ */
/** @} */
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