mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
8c78f0dee4
This patch adds a hwmon driver for the AHT10 Temperature and Humidity sensor. It has a maximum sample rate, as the datasheet states that the chip may heat up if it is sampled more than once every two seconds. Has been tested a to work on a raspberrypi0w Signed-off-by: Johannes Cornelis Draaijer (datdenkikniet) <jcdra1@gmail.com> Link: https://lore.kernel.org/r/20210107194014.GA88780@desktop [groeck: dropped AHT10_ADDR (unused) and use AHT10_MEAS_SIZE where appropriate; dropped change log] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
46 lines
1.2 KiB
ReStructuredText
46 lines
1.2 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
Kernel driver aht10
|
|
=====================
|
|
|
|
Supported chips:
|
|
|
|
* Aosong AHT10
|
|
|
|
Prefix: 'aht10'
|
|
|
|
Addresses scanned: None
|
|
|
|
Datasheet:
|
|
|
|
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
|
|
|
|
Author: Johannes Cornelis Draaijer <jcdra1@gmail.com>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
The AHT10 is a Temperature and Humidity sensor
|
|
|
|
The address of this i2c device may only be 0x38
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver does not probe for AHT10 devices, as there is no reliable
|
|
way to determine if an i2c chip is or isn't an AHT10. 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 Celcius
|
|
humidity1_input Measured humidity in %H
|
|
update_interval The minimum interval for polling the sensor,
|
|
in milliseconds. Writable. Must be at
|
|
least 2000.
|
|
=============== ============================================
|