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# Copyright (c) 2018 STMicroelectronics
# SPDX-License-Identifier: Apache-2.0
properties:
drdy-gpios:
type: phandle-array
required: false
description: |
DRDY pin
This pin defaults to active high when produced by the sensor.
The property value should ensure the flags properly describe
the signal that is presented to the driver.
drdy-int:
type: int
required: false
default: 1
enum:
- 1 # drdy is generated from INT1
- 2 # drdy is generated from INT2
description: Select DRDY pin number (1 or 2).
This number represents which of the two interrupt pins
(INT1 or INT2) the drdy line is attached to. This property is not
mandatory and if not present it defaults to 1 which is the
configuration at power-up.
range:
type: int
required: false
default: 2
description: Range in g. Default is power-up configuration.
enum:
- 16 # 16g (1.952 mg/LSB)
- 8 # 8g (0.976 mg/LSB)
- 4 # 4g (0.488 mg/LSB)
- 2 # 2g (0.244 mg/LSB)
power-mode:
type: int
required: false
default: 0
description: Specify the sensor power mode. Default is power-up configuration.
enum:
- 0 # Low Power M1
- 1 # Low Power M2
- 2 # Low Power M3
- 3 # Low Power M4
- 4 # High Performance
# tap and tap-tap configuration section
# All default values are selected to match the power-up values.
# tap and tap-tap events can be generated on INT1 only.
tap-mode:
type: int
required: false
default: 0
description: Tap mode. Default is power-up configuration.
enum:
- 0 # Only Single Tap
- 1 # Single and Double Tap
tap-threshold:
type: array
required: false
default: [0, 0, 0]
description: |
Tap X/Y/Z axes threshold. Default is power-up configuration.
(X/Y/Z values range from 0x00 to 0x1F)
Thresholds to start the tap-event detection procedure on the X/Y/Z axes.
Threshold values for each axis are unsigned 5-bit corresponding
to a 2g acceleration full-scale range. A threshold value equal to zero
corresponds to disable the tap detection on that axis.
For example, if you want to set the threshold for X to 12, for Z to 14
and want to disable tap detection on Y, you should specify in Device Tree
tap-threshold = <12>, <0>, <14>
which is equivalent to X = 12 * 2g/32 = 750mg and Z = 14 * 2g/32 = 875mg.
tap-shock:
type: int
required: false
default: 0x0
description: |
Tap shock value. Default is power-up configuration.
(values range from 0x0 to 0x3)
This register represents the maximum time of an over-threshold signal
detection to be recognized as a tap event. Where 0 equals 4*1/ODR and
1LSB = 8*1/ODR.
tap-latency:
type: int
required: false
default: 0x0
description: |
Tap latency. Default is power-up configuration.
(values range from 0x0 to 0xF)
When double-tap recognition is enabled, this register expresses the
maximum time between two successive detected taps to determine a
double-tap event. Where 0 equals 16*1/ODR and 1LSB = 32*1/ODR.
tap-quiet:
type: int
required: false
default: 0x0
description: |
Expected quiet time after a tap detection. Default is power-up configuration.
(values range from 0x0 to 0x3)
This register represents the time after the first detected tap in which
there must not be any overthreshold event. Where 0 equals 2*1/ODR
and 1LSB = 4*1/ODR.