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example_keyboards
preonic-1.0
planck-4.0
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LUFA-111009
LUFA-130901
LUFA-130901-BETA
LUFA-140302
LUFA-140928
LUFA-151115
LUFA-170418
breakpoint_2019_08_30
ergodox_ez-161205
gh60-0.1
planck-4.1
planck-4.2
planck-5.0
planck-6.0
planck-6.1
planck-light-1.0
preonic-2.0
v4.0
${ noResults }
2.4 KiB
2.4 KiB
Debounce algorithm
QMK supports multiple debounce algorithms through its debounce API.
The logic for which debounce method called is below. It checks various defines that you have set in rules.mk
DEBOUNCE_DIR:= $(QUANTUM_DIR)/debounce
DEBOUNCE_TYPE?= sym_g
ifneq ($(strip $(DEBOUNCE_TYPE)), custom)
QUANTUM_SRC += $(DEBOUNCE_DIR)/$(strip $(DEBOUNCE_TYPE)).c
endif
Debounce selection
DEBOUNCE_TYPE | Description | What else is needed |
---|---|---|
Not defined | Use the default algorithm, currently sym_g | Nothing |
custom | Use your own debounce.c | SRC += debounce.c add your own debounce.c and implement necessary functions |
anything_else | Use another algorithm from quantum/debounce/* | Nothing |
Regarding split keyboards: The debounce code is compatible with split keyboards.
Use your own debouncing code
- Set
DEBOUNCE_TYPE = custom
. - Add
SRC += debounce.c
- Add your own
debounce.c
. Look at current implementations inquantum/debounce
for examples. - Debouncing occurs after every raw matrix scan.
- Use num_rows rather than MATRIX_ROWS, so that split keyboards are supported correctly.
Changing between included debouncing methods
You can either use your own code, by including your own debounce.c, or switch to another included one. Included debounce methods are:
- eager_pr - debouncing per row. On any state change, response is immediate, followed by locking the row
DEBOUNCE_DELAY
milliseconds of no further input for that row. For use in keyboards where refreshingNUM_KEYS
8-bit counters is computationally expensive / low scan rate, and fingers usually only hit one row at a time. This could be appropriate for the ErgoDox models; the matrix is rotated 90°, and hence its "rows" are really columns, and each finger only hits a single "row" at a time in normal use. - eager_pk - debouncing per key. On any state change, response is immediate, followed by
DEBOUNCE_DELAY
milliseconds of no further input for that key - sym_g - debouncing per keyboard. On any state change, a global timer is set. When
DEBOUNCE_DELAY
milliseconds of no changes has occured, all input changes are pushed.