2d0fd2554a
This adds support for Sensirion's SHT4X temperature and humidity sensor. Signed-off-by: Leonard Pollak <leonardp@tr-host.de>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
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* Copyright (c) 2021, Leonard Pollak
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Extended public API for Sensirion's SHT4X T/RH sensors
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*
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* This exposes an API to the on-chip heater which is specific to
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* the application/environment and cannot be expressed within the
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* sensor driver abstraction.
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*/
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#ifndef ZEPHYR_INCLUDE_DRIVERS_SENSOR_SHT4X_H_
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#define ZEPHYR_INCLUDE_DRIVERS_SENSOR_SHT4X_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <drivers/sensor.h>
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/* Maximum teperature above which the heater should not be used */
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#define SHT4X_HEATER_MAX_TEMP 65
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enum sensor_attribute_sht4x {
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/* Heater Power: 0, 1, 2 -> high, med, low */
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SENSOR_ATTR_SHT4X_HEATER_POWER = SENSOR_ATTR_PRIV_START,
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/* Heater Duration: 0, 1 -> long, short */
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SENSOR_ATTR_SHT4X_HEATER_DURATION
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};
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/**
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* @brief Fetches data using the on-chip heater.
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*
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* Measurement is always done with "high" repeatability.
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*
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* @param dev Pointer to the sensor device
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*
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* @return 0 if successful, negative errno code if failure.
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*/
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int sht4x_fetch_with_heater(const struct device *dev);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_INCLUDE_DRIVERS_SENSOR_SHT4X_H_ */
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