1.. SPDX-License-Identifier: GPL-2.0
2
3Kernel driver sht4x
4===================
5
6Supported Chips:
7
8  * Sensirion SHT4X
9
10    Prefix: 'sht4x'
11
12    Addresses scanned: None
13
14    Datasheet:
15
16      English: https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT4x_Datasheet.pdf
17
18Author: Navin Sankar Velliangiri <navin@linumiz.com>
19
20
21Description
22-----------
23
24This driver implements support for the Sensirion SHT4x chip, a humidity
25and temperature sensor. Temperature is measured in degree celsius, relative
26humidity is expressed as a percentage. In sysfs interface, all values are
27scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500.
28
29Usage Notes
30-----------
31
32The device communicates with the I2C protocol. Sensors can have the I2C
33address 0x44. See Documentation/i2c/instantiating-devices.rst for methods
34to instantiate the device.
35
36Sysfs entries
37-------------
38
39=============== ============================================
40temp1_input     Measured temperature in millidegrees Celsius
41humidity1_input Measured humidity in %H
42update_interval The minimum interval for polling the sensor,
43                in milliseconds. Writable. Must be at least
44                2000.
45=============== ============================================
46