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diff --git a/Documentation/hwmon/aht10.rst b/Documentation/hwmon/aht10.rst new file mode 100644 index 000000000000..213644b4ecba --- /dev/null +++ b/Documentation/hwmon/aht10.rst @@ -0,0 +1,56 @@ +.. 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 <jcdra1@gmail.com> + + +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. +=============== ============================================ |