.. SPDX-License-Identifier: GPL-2.0
Kernel driver aht10
=====================
Supported chips:
* Aosong AHT10/AHT20
Prefix: 'aht10'
Addresses scanned: None
Datasheet(AHT10):
Chinese: http://www.aosong.com/userfiles/files/media/AHT10%E4%BA%A7%E5%93%81%E6%89%8B%E5%86%8C%20A3%2020201210.pdf
English: https://server4.eca.ir/eshop/AHT10/Aosong_AHT10_en_draft_0c.pdf
Datasheet(AHT20):
English: http://www.aosong.com/userfiles/files/media/Data%20Sheet%20AHT20.pdf
Author: Johannes Cornelis Draaijer <[email protected]>
Description
-----------
The AHT10/AHT20 is a Temperature and Humidity sensor
The address of this i2c device may only be 0x38
Special Features
----------------
AHT20 has additional CRC8 support which is sent as the last byte of the sensor
values.
Usage Notes
-----------
This driver does not probe for AHT10/ATH20 devices, as there is no reliable
way to determine if an i2c chip is or isn't an AHT10/AHT20. The device has
to be instantiated explicitly with the address 0x38. See
Documentation/i2c/instantiating-devices.rst for details.
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.
=============== ============================================
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