sht25.h

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/*
 * Copyright (c) 2015, Zolertia <http://www.zolertia.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 *
 */
/*---------------------------------------------------------------------------*/
/**
 * \addtogroup zoul-sensors
 * @{
 *
 * \defgroup zoul-sht25-sensor SHT25 digital temperature sensor
 * @{
 *
 * \file
 *         SHT25 temperature and humidity sensor driver header file
 * \author
 *         Antonio Lignan <alinan@zolertia.com>
 */
/*---------------------------------------------------------------------------*/
#include "lib/sensors.h"
/* -------------------------------------------------------------------------- */
#ifndef SHT25_H_
#define SHT25_H_
/* -------------------------------------------------------------------------- */
#define SHT25_ADDR              0x40
#define SHT25_TEMP_HOLD         0xE3
#define SHT25_HUM_HOLD          0xE5
#define SHT25_TEMP_NO_HOLD      0xF3
#define SHT25_HUM_NO_HOLD       0xF5
#define SHT2X_UREG_WRITE        0xE6
#define SHT2X_UREG_READ         0xE7
#define SHT2X_SOFT_RESET        0XFE
#define SHT2X_NULL              0x00
/* -------------------------------------------------------------------------- */
#define SHT2X_RES_14T_12RH      0x00
#define SHT2X_RES_12T_08RH      0x01
#define SHT2X_RES_13T_10RH      0x80
#define SHT2X_RES_11T_11RH      0x81
#define SHT2X_HEATER_ON         0x04
#define SHT2X_HEATER_OFF        0x00
#define SHT2X_OTP_RELOAD_EN     0x00
#define SHT2X_OTP_RELOAD_DIS    0x02
#define SHT2x_LOW_VOLTAGE_MASK  0x40
#define SHT2x_LOW_VOLTAGE_SHIFT 0x06
/* -------------------------------------------------------------------------- */
#define SHT25_ACTIVE            SENSORS_ACTIVE
#define SHT25_SOFT_RESET        0x01
#define SHT25_RESOLUTION        0x02
 
#define SHT25_VAL_TEMP          SHT25_TEMP_HOLD
#define SHT25_VAL_HUM           SHT25_HUM_HOLD
#define SHT25_VOLTAGE_ALARM     0x01
 
#define SHT25_ERROR             (-1)
#define SHT25_SUCCESS           0x00
#define SHT25_RESET_DELAY       15000
#define SHT25_STATUS_BITS_MASK  0x0003
/* -------------------------------------------------------------------------- */
#define SHT25_SENSOR "SHT25 Sensor"
/* -------------------------------------------------------------------------- */
extern const struct sensors_sensor sht25;
/* -------------------------------------------------------------------------- */
#endif /* ifndef SHT25_H_ */
/**
 * @}
 * @}
 */