.. 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 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. =============== ============================================