| # Micropower, 3-Axis, +/-200g Digital Accelerometer |
| |
| # Copyright (c) 2018 Analog Devices Inc. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menuconfig ADXL372 |
| bool "ADXL372 Three Axis High-g I2C/SPI accelerometer" |
| depends on (I2C && HAS_DTS_I2C) || SPI |
| help |
| Enable driver for ADXL372 Three-Axis Digital Accelerometers. |
| |
| if ADXL372 |
| |
| choice ADXL372_BUS_TYPE |
| prompt "Interface type" |
| help |
| Select interface the digital interface type for the ADXL372 |
| |
| config ADXL372_I2C |
| depends on I2C |
| bool "I2C Interface" |
| |
| config ADXL372_SPI |
| depends on SPI |
| bool "SPI Interface" |
| |
| endchoice |
| |
| choice |
| prompt "Operating mode" |
| default ADXL372_PEAK_DETECT_MODE |
| |
| config ADXL372_PEAK_DETECT_MODE |
| bool "Max Peak detect mode" |
| help |
| In most high-g applications, a single (3-axis) acceleration sample at |
| the peak of an impact event contains sufficient information |
| about the event, and the full acceleration history is not required. |
| In this mode the device returns only the over threshold |
| Peak Acceleration between two consecutive sample fetches. |
| |
| config ADXL372_MEASUREMENT_MODE |
| bool "Measurement Mode" |
| help |
| In this mode, acceleration data is provided continuously at the |
| output data rate (ODR). |
| |
| endchoice |
| |
| choice |
| prompt "Accelerometer sampling frequency (ODR)" |
| default ADXL372_ODR_6400HZ if ADXL372_PEAK_DETECT_MODE |
| default ADXL372_ODR_400HZ if ADXL372_MEASUREMENT_MODE |
| |
| config ADXL372_ODR_400HZ |
| bool "400 Hz" |
| |
| config ADXL372_ODR_800HZ |
| bool "800 Hz" |
| |
| config ADXL372_ODR_1600HZ |
| bool "1600 Hz" |
| |
| config ADXL372_ODR_3200HZ |
| bool "3200 Hz" |
| |
| config ADXL372_ODR_6400HZ |
| bool "6400 Hz" |
| |
| endchoice |
| |
| choice |
| prompt "Low-Pass (Antialiasing) Filter corner frequency" |
| default ADXL372_BW_200HZ if ADXL372_ODR_400HZ |
| default ADXL372_BW_400HZ if ADXL372_ODR_800HZ |
| default ADXL372_BW_800HZ if ADXL372_ODR_1600HZ |
| default ADXL372_BW_1600HZ if ADXL372_ODR_3200HZ |
| default ADXL372_BW_3200HZ if ADXL372_ODR_6400HZ |
| help |
| High g events often include acceleration content over a wide range |
| of frequencies. The ADC of the ADXL372 samples the input acceleration |
| at the user selected ODR. |
| In the absence of antialiasing filters, input signals whose frequency |
| is more than half the ODR alias or fold into the measurement bandwidth |
| can lead to inaccurate measurements. |
| |
| config ADXL372_LPF_DISABLE |
| bool "Disabled" |
| |
| config ADXL372_BW_200HZ |
| bool "200 Hz" |
| |
| config ADXL372_BW_400HZ |
| bool "400 Hz" |
| |
| config ADXL372_BW_800HZ |
| bool "800 Hz" |
| |
| config ADXL372_BW_1600HZ |
| bool "1600 Hz" |
| |
| config ADXL372_BW_3200HZ |
| bool "3200 Hz" |
| |
| endchoice |
| |
| choice |
| prompt "High-Pass Filter corner frequency" |
| default ADXL372_HPF_CORNER0 |
| help |
| The ADXL372 offers a one-pole, high-pass filter with a user |
| selectable −3 dB frequency. Applications that do not require dc |
| acceleration measurements can use the high-pass filter to minimize |
| constant or slow varying offset errors including initial bias, |
| bias drift due to temperature, and bias drift due to supply voltage |
| |
| config ADXL372_HPF_DISABLE |
| bool "Disabled" |
| |
| config ADXL372_HPF_CORNER0 |
| bool "ODR/210" |
| |
| config ADXL372_HPF_CORNER1 |
| bool "ODR/411" |
| |
| config ADXL372_HPF_CORNER2 |
| bool "ODR/812" |
| |
| config ADXL372_HPF_CORNER3 |
| bool "ODR/1616" |
| |
| endchoice |
| |
| |
| config ADXL372_ACTIVITY_THRESHOLD |
| int "Activity threshold in mg" |
| range 0 200000 |
| default 500 |
| help |
| Threshold for activity detection. |
| |
| config ADXL372_INACTIVITY_THRESHOLD |
| int "In-activity threshold in mg" |
| range 0 200000 |
| default 400 |
| help |
| Threshold for in-activity detection. |
| |
| config ADXL372_ACTIVITY_TIME |
| int "Activity time" |
| range 0 255 |
| default 1 |
| help |
| The activity timer implements a robust activity detection that |
| minimizes false positive motion triggers. When the timer is used, |
| only sustained motion can trigger activity detection. |
| Number of multiples of 3.3 ms activity timer for which above threshold |
| acceleration is required to detect activity. It is 3.3 ms per code |
| for 6400 Hz ODR, and it is 6.6 ms per code for 3200 Hz ODR and below. |
| |
| config ADXL372_INACTIVITY_TIME |
| int "In-activity time" |
| range 0 255 |
| default 2 |
| help |
| The time that all enabled axes must be lower than the inactivity |
| threshold for an inactivity event to be detected. Number of multiples |
| of 26 ms inactivity timer for which below threshold acceleration is |
| required to detect inactivity. It is 26 ms per code for 3200 Hz ODR |
| and below, and it is 13 ms per code for 6400 Hz ODR. |
| |
| config ADXL372_REFERENCED_ACTIVITY_DETECTION_MODE |
| bool "Use referenced activity/in-activity detection" |
| default y |
| help |
| Activity detection can be configured as referenced or absolute. |
| When using absolute activity detection, acceleration samples are |
| compared directly to a user set threshold to determine whether |
| motion is present. In many applications, it is advantageous for |
| activity detection to be based not on an absolute threshold, |
| but on a deviation from a reference point or orientation. |
| |
| choice |
| prompt "Trigger mode" |
| default ADXL372_TRIGGER_NONE |
| help |
| Specify the type of triggering used by the driver. |
| |
| config ADXL372_TRIGGER_NONE |
| bool "No trigger" |
| |
| config ADXL372_TRIGGER_GLOBAL_THREAD |
| bool "Use global thread" |
| depends on GPIO |
| select ADXL372_TRIGGER |
| |
| config ADXL372_TRIGGER_OWN_THREAD |
| bool "Use own thread" |
| depends on GPIO |
| select ADXL372_TRIGGER |
| |
| endchoice |
| |
| config ADXL372_TRIGGER |
| bool |
| |
| config ADXL372_THREAD_PRIORITY |
| int "Thread priority" |
| depends on ADXL372_TRIGGER_OWN_THREAD && ADXL372_TRIGGER |
| default 10 |
| help |
| Priority of thread used by the driver to handle interrupts. |
| |
| config ADXL372_THREAD_STACK_SIZE |
| int "Thread stack size" |
| depends on ADXL372_TRIGGER_OWN_THREAD && ADXL372_TRIGGER |
| default 1024 |
| help |
| Stack size of thread used by the driver to handle interrupts. |
| |
| endif # ADXL372 |
