diff options
| author | Kirill Yatsenko <kiriyatsenko@gmail.com> | 2023-05-24 22:19:12 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2023-06-08 06:41:18 -0700 |
| commit | d2abcb5cc88577f996ab505c8102254aba7062d8 (patch) | |
| tree | 6ce64bbf1e31163e188e11ecb5ef4fb99a89cd01 /Documentation/hwmon | |
| parent | 7d0c2c61b1a4d1cf5641b35b491fe58ffafe26bc (diff) | |
| download | linux-d2abcb5cc88577f996ab505c8102254aba7062d8.tar.gz | |
hwmon: (aht10) Add support for compatible aht20
Add support for compatible AHT20 temperature/humidity sensor. The only
difference between the two is that AHT20 has additional crc8 byte.
It seems like AHT15 is also supported by the driver but it wasn't
verified and tested yet.
Tested on Beaglebone black rev C.
Signed-off-by: Kirill Yatsenko <kiriyatsenko@gmail.com>
Link: https://lore.kernel.org/r/20230524201912.815993-1-kiriyatsenko@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/aht10.rst | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/Documentation/hwmon/aht10.rst b/Documentation/hwmon/aht10.rst index 4e198c5eb6834..213644b4ecba6 100644 --- a/Documentation/hwmon/aht10.rst +++ b/Documentation/hwmon/aht10.rst @@ -5,32 +5,42 @@ 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 + 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 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. |