Contiki-NG
sht25.h
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1 /*
2  * Copyright (c) 2015, Zolertia <http://www.zolertia.com>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 /*---------------------------------------------------------------------------*/
33 /**
34  * \addtogroup zoul-sensors
35  * @{
36  *
37  * \defgroup zoul-sht25-sensor SHT25 digital temperature sensor
38  * @{
39  *
40  * \file
41  * SHT25 temperature and humidity sensor driver header file
42  * \author
43  * Antonio Lignan <alinan@zolertia.com>
44  */
45 /*---------------------------------------------------------------------------*/
46 #include "lib/sensors.h"
47 /* -------------------------------------------------------------------------- */
48 #ifndef SHT25_H_
49 #define SHT25_H_
50 /* -------------------------------------------------------------------------- */
51 #define SHT25_ADDR 0x40
52 #define SHT25_TEMP_HOLD 0xE3
53 #define SHT25_HUM_HOLD 0xE5
54 #define SHT25_TEMP_NO_HOLD 0xF3
55 #define SHT25_HUM_NO_HOLD 0xF5
56 #define SHT2X_UREG_WRITE 0xE6
57 #define SHT2X_UREG_READ 0xE7
58 #define SHT2X_SOFT_RESET 0XFE
59 #define SHT2X_NULL 0x00
60 /* -------------------------------------------------------------------------- */
61 #define SHT2X_RES_14T_12RH 0x00
62 #define SHT2X_RES_12T_08RH 0x01
63 #define SHT2X_RES_13T_10RH 0x80
64 #define SHT2X_RES_11T_11RH 0x81
65 #define SHT2X_HEATER_ON 0x04
66 #define SHT2X_HEATER_OFF 0x00
67 #define SHT2X_OTP_RELOAD_EN 0x00
68 #define SHT2X_OTP_RELOAD_DIS 0x02
69 #define SHT2x_LOW_VOLTAGE_MASK 0x40
70 #define SHT2x_LOW_VOLTAGE_SHIFT 0x06
71 /* -------------------------------------------------------------------------- */
72 #define SHT25_ACTIVE SENSORS_ACTIVE
73 #define SHT25_SOFT_RESET 0x01
74 #define SHT25_RESOLUTION 0x02
75 
76 #define SHT25_VAL_TEMP SHT25_TEMP_HOLD
77 #define SHT25_VAL_HUM SHT25_HUM_HOLD
78 #define SHT25_VOLTAGE_ALARM 0x01
79 
80 #define SHT25_ERROR (-1)
81 #define SHT25_SUCCESS 0x00
82 #define SHT25_RESET_DELAY 15000
83 #define SHT25_STATUS_BITS_MASK 0x0003
84 /* -------------------------------------------------------------------------- */
85 #define SHT25_SENSOR "SHT25 Sensor"
86 /* -------------------------------------------------------------------------- */
87 extern const struct sensors_sensor sht25;
88 /* -------------------------------------------------------------------------- */
89 #endif /* ifndef SHT25_H_ */
90 /**
91  * @}
92  * @}
93  */