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.
For split keyboards using an IO expander over TRRS/i2c, if the
right half isn't connected, we should be able to gracefully
fallback to the left side still working.
Refactored the GPIO matrix kscan driver so that only the data and config
structures are defined in the foreach macro. Functionality is unchanged
except for the addition of DT properties to adjust polling speed.
This should make it easier to add other enhancements later, like
improved and customizable debounce behavior.
Add a little delay so any capacitors connected to the ADC for the BVD can charge up when using power_gpios
Co-authored-by: Jasper Smit <jrhrsmit@gmail.com>
* Add easier macros for conditional polling/interrupt code.
* Properly continue polling on intervals, without extra
enable/disable code for pins that is superfluous when not trying to
deal with interupts firing.
* Fix to allow multiple GPIO drivers when doing splits w/ IO expanders
Aligns *.h and *.c to underscore naming convention.
These were kept (with warnings) for backwards compatibility with external boards/shields:
- kscan-mock.h
- matrix-transform.h
They should be removed in the future.
PR: #523
Updated function calls with missing reference. GPIO missing.
To my understanding:
DT_INST_GPIO_PIN() should be called instead if DT_INST_PIN()
DT_INST_GPIO_FLAGS() should be called instead if DT_INST_GPIO_FLAGS()
Current implementation does not compile when using control pin.
+ zmk,kscan_gpio_demux is now a compatible kscan option
+ kscan_gpio_demux is based heavily off of the implementation of
kscan_gpio_matrix, modified to address cols using an n-to-1
demultiplexer chip instead of discrete IO
+ Added zmk,kscan_gpio_demux.yaml file
* modified CMakeLists to include new source files
* New ZMK_SLEEP Kconfig symbol to enable the functionality.
* Switch to PORT events that allows wake from deep sleep.
* Initial basic power management policy, with idle ms,
and ignoring deep sleep if we detect a USB connection.
Fixed initializing interrupts for direct GPIO when
CONFIG_ZMK_KSCAN_DIRECT_POLLING is not enabled. IS_ENABLED() is needed to map
the possibly-undefined value to 0 or 1 so COND_CODE_0() and COND_CODE_1() work.
Peter Johanson