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Diffstat (limited to 'Documentation/hwmon/aht10.rst')
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diff --git a/Documentation/hwmon/aht10.rst b/Documentation/hwmon/aht10.rst index 482262ca117c..7903b6434326 100644 --- a/Documentation/hwmon/aht10.rst +++ b/Documentation/hwmon/aht10.rst @@ -5,32 +5,50 @@ Kernel driver aht10 Supported chips: - * Aosong AHT10 + * Aosong AHT10/AHT20 Prefix: 'aht10' Addresses scanned: None - Datasheet: + 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 + + * Aosong DHT20 + + Prefix: 'dht20' + + Addresses scanned: None + + Datasheet: https://www.digikey.co.nz/en/htmldatasheets/production/9184855/0/0/1/101020932 + Author: Johannes Cornelis Draaijer <jcdra1@gmail.com> Description ----------- -The AHT10 is a Temperature and Humidity sensor +The AHT10/AHT20 is a Temperature and Humidity sensor The address of this i2c device may only be 0x38 +Special Features +---------------- + +AHT20, DHT20 has additional CRC8 support which is sent as the last byte of the sensor +values. + 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 +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. @@ -38,7 +56,7 @@ Sysfs entries ------------- =============== ============================================ -temp1_input Measured temperature in millidegrees Celcius +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 |