f946dc6893
Switched the GPIO matrix driver to debouncing using a simple integrator algorithm. Whenever a key is pressed, we now scan at a rate controlled by debounce-scan-period-ms (default 1 ms) until all keys are released, then return to either waiting for an interrupt or polling more slowly. The timers for key press and release can now be controlled separately, so debounce-period is deprecated in favor of debounce-press-ms and debounce-release-ms. Global Kconfig options ZMK_KSCAN_DEBOUNCE_PRESS_MS and ZMK_KSCAN_DEBOUNCE_RELEASE_MS are also added to make these easier to set. Added documentation for debouncing options.
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
# Copyright (c) 2020 The ZMK Contributors
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# SPDX-License-Identifier: MIT
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config ZMK_KSCAN_GPIO_DRIVER
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bool "Enable GPIO kscan driver to detect key presses"
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default y
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select GPIO
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if ZMK_KSCAN_GPIO_DRIVER
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config ZMK_KSCAN_MATRIX_POLLING
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bool "Poll for key event triggers instead of using interrupts on matrix boards."
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config ZMK_KSCAN_DIRECT_POLLING
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bool "Poll for key event triggers instead of using interrupts on direct wired boards."
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config ZMK_KSCAN_DEBOUNCE_PRESS_MS
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int "Debounce time for key press in milliseconds."
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default -1
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help
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Global debounce time for key press in milliseconds.
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If this is -1, the debounce time is controlled by the debounce-press-ms
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Devicetree property, which defaults to 5 ms. Otherwise this overrides the
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debounce time for all key scan drivers to the chosen value.
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config ZMK_KSCAN_DEBOUNCE_RELEASE_MS
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int "Debounce time for key release in milliseconds."
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default -1
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help
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Global debounce time for key release in milliseconds.
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If this is -1, the debounce time is controlled by the debounce-release-ms
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Devicetree property, which defaults to 5 ms. Otherwise this overrides the
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debounce time for all key scan drivers to the chosen value.
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endif
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config ZMK_KSCAN_INIT_PRIORITY
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int "Keyboard scan driver init priority"
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default 40
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help
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Keyboard scan device driver initialization priority.
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