https://github.com/torvalds/linux
Raw File
Tip revision: e8b0ccb2a787fb43f8091a1eaef9c28a79b00002 authored by Linus Torvalds on 05 April 2024, 17:05:42 UTC
Merge tag '9p-for-6.9-rc3' of https://github.com/martinetd/linux
Tip revision: e8b0ccb
sht4x.rst
.. SPDX-License-Identifier: GPL-2.0

Kernel driver sht4x
===================

Supported Chips:

  * Sensirion SHT4X

    Prefix: 'sht4x'

    Addresses scanned: None

    Datasheet:

      English: https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT4x_Datasheet.pdf

Author: Navin Sankar Velliangiri <navin@linumiz.com>


Description
-----------

This driver implements support for the Sensirion SHT4x chip, a humidity
and temperature sensor. Temperature is measured in degree celsius, relative
humidity is expressed as a percentage. In sysfs interface, all values are
scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500.

Usage Notes
-----------

The device communicates with the I2C protocol. Sensors can have the I2C
address 0x44. See Documentation/i2c/instantiating-devices.rst for methods
to instantiate the device.

Sysfs entries
-------------

=============== ============================================
temp1_input     Measured temperature in millidegrees Celsius
humidity1_input Measured humidity in %H
update_interval The minimum interval for polling the sensor,
                in milliseconds. Writable. Must be at least
                2000.
=============== ============================================
back to top