1+ /* !
2+ * @file WipperSnapper_I2C_Driver_ENS160.h
3+ *
4+ * Device driver for a ENS160 MOX Gas Sensor.
5+ *
6+ * Adafruit invests time and resources providing this open source code,
7+ * please support Adafruit and open-source hardware by purchasing
8+ * products from Adafruit!
9+ *
10+ * Copyright (c) Tyeth Gundry 2023 for Adafruit Industries.
11+ *
12+ * MIT license, all text here must be included in any redistribution.
13+ *
14+ */
15+
16+ #ifndef WipperSnapper_I2C_Driver_ENS160_H
17+ #define WipperSnapper_I2C_Driver_ENS160_H
18+
19+ #include " WipperSnapper_I2C_Driver.h"
20+ #include < ScioSense_ENS160.h>
21+
22+ #define SEALEVELPRESSURE_HPA (1013.25 ) // /< Default sea level pressure, in hPa
23+
24+ /* *************************************************************************/
25+ /* !
26+ @brief Class that provides a sensor driver for the ENS160 temperature
27+ and humidity sensor.
28+ */
29+ /* *************************************************************************/
30+ class WipperSnapper_I2C_Driver_ENS160 : public WipperSnapper_I2C_Driver {
31+
32+ public:
33+ /* ******************************************************************************/
34+ /* !
35+ @brief Constructor for an ENS160 sensor.
36+ @param i2c
37+ The I2C interface.
38+ @param sensorAddress
39+ 7-bit device address.
40+ */
41+ /* ******************************************************************************/
42+ WipperSnapper_I2C_Driver_ENS160 (TwoWire *i2c, uint16_t sensorAddress)
43+ : WipperSnapper_I2C_Driver(i2c, sensorAddress) {
44+ _i2c = i2c;
45+ _sensorAddress = sensorAddress;
46+ }
47+
48+ /* ******************************************************************************/
49+ /* !
50+ @brief Destructor for an ENS160 sensor.
51+ */
52+ /* ******************************************************************************/
53+ ~WipperSnapper_I2C_Driver_ENS160 () { delete _ens160; }
54+
55+ /* ******************************************************************************/
56+ /* !
57+ @brief Initializes the ENS160 sensor and begins I2C.
58+ @returns True if initialized successfully, False otherwise.
59+ */
60+ /* ******************************************************************************/
61+ bool begin () {
62+ _ens160 = new ScioSense_ENS160 ((TwoWire *)_i2c, (uint8_t )_sensorAddress);
63+
64+ // attempt to initialize ENS160
65+ if (!_ens160->begin ())
66+ return false ;
67+
68+ // Set the mode to standard
69+ return _ens160->setMode (ENS160_OPMODE_STD);
70+ }
71+
72+ /* ******************************************************************************/
73+ /* !
74+ @brief Performs a reading in blocking mode.
75+ @returns True if the reading succeeded, False otherwise.
76+ */
77+ /* ******************************************************************************/
78+ bool ensPerformReading () {
79+ return _ens160->available () && _ens160->measure (true );
80+ }
81+
82+ /* ******************************************************************************/
83+ /* !
84+ @brief Reads the ENS160's eCO2 sensor into an event.
85+ @param eco2Event
86+ Pointer to an adafruit sensor event.
87+ @returns True if the sensor event was obtained successfully, False
88+ otherwise.
89+ */
90+ /* ******************************************************************************/
91+ bool getEventECO2 (sensors_event_t *eco2Event) {
92+ if (!ensPerformReading ())
93+ return false ;
94+ eco2Event->eCO2 = (float )_ens160->geteCO2 ();
95+ return true ;
96+ }
97+
98+ /* ******************************************************************************/
99+ /* !
100+ @brief Reads the ENS160's TVOC sensor into an event.
101+ @param tvocEvent
102+ Pointer to an adafruit sensor event.
103+ @returns True if the sensor event was obtained successfully, False
104+ otherwise.
105+ */
106+ /* ******************************************************************************/
107+ bool getEventTVOC (sensors_event_t *tvocEvent) {
108+ if (!ensPerformReading ())
109+ return false ;
110+ tvocEvent->tvoc = (float )_ens160->getTVOC ();
111+ return true ;
112+ }
113+
114+ /* ******************************************************************************/
115+ /* !
116+ @brief Reads the ENS160's AQI value into an event.
117+ @param rawEvent
118+ Pointer to an adafruit sensor event.
119+ @returns True if the sensor event was obtained successfully, False
120+ otherwise.
121+ */
122+ /* ******************************************************************************/
123+ bool getEventRaw (sensors_event_t *rawEvent) {
124+ if (!ensPerformReading ())
125+ return false ;
126+ rawEvent->data [0 ] = (float )_ens160->getAQI ();
127+ return true ;
128+ }
129+
130+ protected:
131+ ScioSense_ENS160 *_ens160; // /< ENS160 object
132+ };
133+
134+ #endif // WipperSnapper_I2C_Driver_ENS160
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