6c10da7957
Add driver for TCN75A temperature sensor. The following features are supported: - TCN75A oneshot mode, which allows single shot conversions with lower power consumtion - Resolution selection, up to 12 bit resolution (9 bit default) - Triggering based on temperatue thresholds. If the TCN75A exits a set threshold range, the application can be notified via a callback. Signed-off-by: Daniel DeGrasse <daniel@degrasse.com>
43 lines
1.3 KiB
YAML
43 lines
1.3 KiB
YAML
# Copyright 2023 Daniel DeGrasse <daniel@degrasse.com>
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
description: TCN75A ambient temperature sensor
|
|
|
|
compatible: "microchip,tcn75a"
|
|
|
|
include: [sensor-device.yaml, i2c-device.yaml]
|
|
|
|
properties:
|
|
alert-gpios:
|
|
type: phandle-array
|
|
description: |
|
|
ALERT pin
|
|
This pin defaults to active low when produced by the sensor.
|
|
The property value should ensure the gpio flags properly describe
|
|
the signal that is presented to the driver. Required in order to use
|
|
triggering support.
|
|
|
|
resolution:
|
|
type: string
|
|
default: "9-bit"
|
|
enum:
|
|
- "9-bit"
|
|
- "10-bit"
|
|
- "11-bit"
|
|
- "12-bit"
|
|
description: |
|
|
Sensor resolution. Higher resolutions will result in longer conversion
|
|
times. Note: datasheet's claim about the ambient temperature register:
|
|
> When the 0.5°C, 0.25°C or 0.125°C resolutions are selected,
|
|
> bit 6, bit 7 or bit 8 will remain clear <0>,
|
|
> respectively.
|
|
appears to be incorrect. Only conversion times seem to be affected by
|
|
resolution selection.
|
|
|
|
oneshot-mode:
|
|
type: boolean
|
|
description: |
|
|
Oneshot sampling mode. Reduces power consumption, but disables triggering
|
|
feature as well as high resolution sampling. Only supported with 9 bit
|
|
resolution.
|