linux/Documentation/hwmon/hs3001.rst
Andre Werner 43fbe66dc2 hwmon: Add driver for Renesas HS3001
Add base support for Renesas HS3001 temperature
and humidity sensors and its compatibles HS3002,
HS3003 and HS3004.

The sensor has a fix I2C address 0x44. The resolution
is fixed to 14bit (ref. Missing feature).

Missing feature:
- Accessing non-volatile memory: Custom board has no
  possibility to control voltage supply of sensor. Thus,
  we cannot send the necessary control commands within
  the first 10ms after power-on.

Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Link: https://lore.kernel.org/r/20230725042207.22310-2-andre.werner@systec-electronic.com
[groeck: Cosmetic documentation fixup; added documentation to index;
 replaced probe_new with probe dropped unused variable]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-08-21 06:04:30 -07:00

38 lines
943 B
ReStructuredText

.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver HS3001
====================
Supported chips:
* Renesas HS3001, HS3002, HS3003, HS3004
Prefix: 'hs3001'
Addresses scanned: -
Datasheet: https://www.renesas.com/us/en/document/dst/hs300x-datasheet?r=417401
Author:
- Andre Werner <andre.werner@systec-electronic.com>
Description
-----------
This driver implements support for the Renesas HS3001 chips, a humidity
and temperature family. Temperature is measured in degrees celsius, relative
humidity is expressed as a percentage. In the sysfs interface, all values are
scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500.
The device communicates with the I2C protocol. Sensors have the I2C
address 0x44 by default.
sysfs-Interface
---------------
=================== =================
temp1_input: temperature input
humidity1_input: humidity input
=================== =================