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Add asym_eager_defer_pk debounce type (#12689)

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python_optimizations
Simon Arlott 4 years ago committed by GitHub
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  1. 4
      docs/feature_debounce_type.md
  2. 171
      quantum/debounce/asym_eager_defer_pk.c
  3. 374
      quantum/debounce/tests/asym_eager_defer_pk_tests.cpp
  4. 5
      quantum/debounce/tests/rules.mk
  5. 3
      quantum/debounce/tests/testlist.mk

4
docs/feature_debounce_type.md
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@ -121,16 +121,16 @@ DEBOUNCE_TYPE = <name of algorithm>
Where name of algorithm is one of:
* ```sym_defer_g``` - debouncing per keyboard. On any state change, a global timer is set. When ```DEBOUNCE``` milliseconds of no changes has occurred, all input changes are pushed.
* This is the current default algorithm. This is the highest performance algorithm with lowest memory usage, and it's also noise-resistant.
* ```sym_eager_pr``` - debouncing per row. On any state change, response is immediate, followed by locking the row ```DEBOUNCE``` milliseconds of no further input for that row.
* ```sym_eager_pr``` - debouncing per row. On any state change, response is immediate, followed by locking the row ```DEBOUNCE``` milliseconds of no further input for that row.
For use in keyboards where refreshing ```NUM_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.
* ```sym_eager_pk``` - debouncing per key. On any state change, response is immediate, followed by ```DEBOUNCE``` milliseconds of no further input for that key
* ```sym_defer_pk``` - debouncing per key. On any state change, a per-key timer is set. When ```DEBOUNCE``` milliseconds of no changes have occurred on that key, the key status change is pushed.
* ```asym_eager_defer_pk``` - debouncing per key. On a key-down state change, response is immediate, followed by ```DEBOUNCE``` milliseconds of no further input for that key. On a key-up state change, a per-key timer is set. When ```DEBOUNCE``` milliseconds of no changes have occurred on that key, the key-up status change is pushed.
### A couple algorithms that could be implemented in the future:
* ```sym_defer_pr```
* ```sym_eager_g```
* ```asym_eager_defer_pk```
### Use your own debouncing code
You have the option to implement you own debouncing algorithm. To do this:

171
quantum/debounce/asym_eager_defer_pk.c
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@ -0,0 +1,171 @@
/*
* Copyright 2017 Alex Ong <the.onga@gmail.com>
* Copyright 2020 Andrei Purdea <andrei@purdea.ro>
* Copyright 2021 Simon Arlott
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Basic symmetric per-key algorithm. Uses an 8-bit counter per key.
When no state changes have occured for DEBOUNCE milliseconds, we push the state.
*/
#include "matrix.h"
#include "timer.h"
#include "quantum.h"
#include <stdlib.h>
#ifdef PROTOCOL_CHIBIOS
# if CH_CFG_USE_MEMCORE == FALSE
# error ChibiOS is configured without a memory allocator. Your keyboard may have set `#define CH_CFG_USE_MEMCORE FALSE`, which is incompatible with this debounce algorithm.
# endif
#endif
#ifndef DEBOUNCE
# define DEBOUNCE 5
#endif
// Maximum debounce: 127ms
#if DEBOUNCE > 127
# undef DEBOUNCE
# define DEBOUNCE 127
#endif
#define ROW_SHIFTER ((matrix_row_t)1)
typedef struct {
bool pressed : 1;
uint8_t time : 7;
} debounce_counter_t;
#if DEBOUNCE > 0
static debounce_counter_t *debounce_counters;
static fast_timer_t last_time;
static bool counters_need_update;
static bool matrix_need_update;
#define DEBOUNCE_ELAPSED 0
static void update_debounce_counters_and_transfer_if_expired(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t elapsed_time);
static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows);
// we use num_rows rather than MATRIX_ROWS to support split keyboards
void debounce_init(uint8_t num_rows) {
debounce_counters = malloc(num_rows * MATRIX_COLS * sizeof(debounce_counter_t));
int i = 0;
for (uint8_t r = 0; r < num_rows; r++) {
for (uint8_t c = 0; c < MATRIX_COLS; c++) {
debounce_counters[i++].time = DEBOUNCE_ELAPSED;
}
}
}
void debounce_free(void) {
free(debounce_counters);
debounce_counters = NULL;
}
void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
bool updated_last = false;
if (counters_need_update) {
fast_timer_t now = timer_read_fast();
fast_timer_t elapsed_time = TIMER_DIFF_FAST(now, last_time);
last_time = now;
updated_last = true;
if (elapsed_time > UINT8_MAX) {
elapsed_time = UINT8_MAX;
}
if (elapsed_time > 0) {
update_debounce_counters_and_transfer_if_expired(raw, cooked, num_rows, elapsed_time);
}
}
if (changed || matrix_need_update) {
if (!updated_last) {
last_time = timer_read_fast();
}
transfer_matrix_values(raw, cooked, num_rows);
}
}
static void update_debounce_counters_and_transfer_if_expired(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t elapsed_time) {
debounce_counter_t *debounce_pointer = debounce_counters;
counters_need_update = false;
matrix_need_update = false;
for (uint8_t row = 0; row < num_rows; row++) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
matrix_row_t col_mask = (ROW_SHIFTER << col);
if (debounce_pointer->time != DEBOUNCE_ELAPSED) {
if (debounce_pointer->time <= elapsed_time) {
debounce_pointer->time = DEBOUNCE_ELAPSED;
if (debounce_pointer->pressed) {
// key-down: eager
matrix_need_update = true;
} else {
// key-up: defer
cooked[row] = (cooked[row] & ~col_mask) | (raw[row] & col_mask);
}
} else {
debounce_pointer->time -= elapsed_time;
counters_need_update = true;
}
}
debounce_pointer++;
}
}
}
static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows) {
debounce_counter_t *debounce_pointer = debounce_counters;
for (uint8_t row = 0; row < num_rows; row++) {
matrix_row_t delta = raw[row] ^ cooked[row];
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
matrix_row_t col_mask = (ROW_SHIFTER << col);
if (delta & col_mask) {
if (debounce_pointer->time == DEBOUNCE_ELAPSED) {
debounce_pointer->pressed = (raw[row] & col_mask);
debounce_pointer->time = DEBOUNCE;
counters_need_update = true;
if (debounce_pointer->pressed) {
// key-down: eager
cooked[row] ^= col_mask;
}
}
} else if (debounce_pointer->time != DEBOUNCE_ELAPSED) {
if (!debounce_pointer->pressed) {
// key-up: defer
debounce_pointer->time = DEBOUNCE_ELAPSED;
}
}
debounce_pointer++;
}
}
}
bool debounce_active(void) { return true; }
#else
# include "none.c"
#endif

374
quantum/debounce/tests/asym_eager_defer_pk_tests.cpp
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@ -0,0 +1,374 @@
/* Copyright 2021 Simon Arlott
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gtest/gtest.h"
#include "debounce_test_common.h"
TEST_F(DebounceTest, OneKeyShort1) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 1ms delay */
{1, {{0, 1, UP}}, {}},
/*
* Until the eager timer on DOWN is observed to finish, the defer timer
* on UP can't start. There's no workaround for this because it's not
* possible to debounce an event that isn't being tracked.
*
* sym_defer_pk has the same problem but the test has to track that the
* key changed state so the DOWN timer is always allowed to finish
* before starting the UP timer.
*/
{5, {}, {}},
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort2) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 2ms delay */
{2, {{0, 1, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort3) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 3ms delay */
{3, {{0, 1, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort4) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 4ms delay */
{4, {{0, 1, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort5) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 5ms delay */
{5, {{0, 1, UP}}, {}},
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort6) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 6ms delay */
{6, {{0, 1, UP}}, {}},
{11, {}, {{0, 1, UP}}}, /* 5ms after UP at time 6 */
/* Press key again after 1ms delay */
{12, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort7) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 7ms delay */
{7, {{0, 1, UP}}, {}},
{12, {}, {{0, 1, UP}}}, /* 5ms after UP at time 7 */
/* Press key again after 1ms delay */
{13, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort8) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 1ms delay */
{1, {{0, 1, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
{10, {}, {{0, 1, UP}}}, /* 5ms after UP at time 7 */
/* Press key again after 0ms delay (scan 2) */
{10, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyShort9) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Release key after 1ms delay */
{1, {{0, 1, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
/* Press key again after 0ms delay (same scan) before debounce finishes */
{10, {{0, 1, DOWN}}, {}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyBouncing1) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{1, {{0, 1, UP}}, {}},
{2, {{0, 1, DOWN}}, {}},
{3, {{0, 1, UP}}, {}},
{4, {{0, 1, DOWN}}, {}},
{5, {{0, 1, UP}}, {}},
{6, {{0, 1, DOWN}}, {}},
{7, {{0, 1, UP}}, {}},
{8, {{0, 1, DOWN}}, {}},
{9, {{0, 1, UP}}, {}},
{10, {{0, 1, DOWN}}, {}},
{11, {{0, 1, UP}}, {}},
{12, {{0, 1, DOWN}}, {}},
{13, {{0, 1, UP}}, {}},
{14, {{0, 1, DOWN}}, {}},
{15, {{0, 1, UP}}, {}},
{20, {}, {{0, 1, UP}}},
/* Press key again after 1ms delay */
{21, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyBouncing2) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Change twice in the same time period */
{1, {{0, 1, UP}}, {}},
{1, {{0, 1, DOWN}}, {}},
/* Change three times in the same time period */
{2, {{0, 1, UP}}, {}},
{2, {{0, 1, DOWN}}, {}},
{2, {{0, 1, UP}}, {}},
/* Change twice in the same time period */
{6, {{0, 1, DOWN}}, {}},
{6, {{0, 1, UP}}, {}},
/* Change three times in the same time period */
{7, {{0, 1, DOWN}}, {}},
{7, {{0, 1, UP}}, {}},
{7, {{0, 1, DOWN}}, {}},
/* Change twice in the same time period */
{8, {{0, 1, UP}}, {}},
{8, {{0, 1, DOWN}}, {}},
/* Change three times in the same time period */
{9, {{0, 1, UP}}, {}},
{9, {{0, 1, DOWN}}, {}},
{9, {{0, 1, UP}}, {}},
{14, {}, {{0, 1, UP}}},
/* Press key again after 1ms delay */
{15, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, OneKeyLong) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{25, {{0, 1, UP}}, {}},
{30, {}, {{0, 1, UP}}},
{50, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{75, {{0, 1, UP}}, {}},
{80, {}, {{0, 1, UP}}},
{100, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
runEvents();
}
TEST_F(DebounceTest, TwoKeysShort) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{1, {{0, 2, DOWN}}, {{0, 2, DOWN}}},
/* Release key after 2ms delay */
{2, {{0, 1, UP}}, {}},
{3, {{0, 2, UP}}, {}},
{5, {}, {}}, /* See OneKeyShort1 */
{6, {}, {}}, /* See OneKeyShort1 */
{10, {}, {{0, 1, UP}}}, /* 5ms+5ms after DOWN at time 0 */
/* Press key again after 1ms delay */
{11, {{0, 1, DOWN}}, {{0, 1, DOWN}, {0, 2, UP}}}, /* 5ms+5ms after DOWN at time 0 */
{12, {{0, 2, DOWN}}, {{0, 2, DOWN}}}, /* 5ms+5ms after DOWN at time 0 */
});
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan1) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Processing is very late, immediately release key */
{300, {{0, 1, UP}}, {}},
{305, {}, {{0, 1, UP}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan2) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Processing is very late, immediately release key */
{300, {{0, 1, UP}}, {}},
/* Processing is very late again */
{600, {}, {{0, 1, UP}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan3) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Processing is very late */
{300, {}, {}},
/* Release key after 1ms */
{301, {{0, 1, UP}}, {}},
{306, {}, {{0, 1, UP}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan4) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Processing is very late */
{300, {}, {}},
/* Release key after 1ms */
{301, {{0, 1, UP}}, {}},
/* Processing is very late again */
{600, {}, {{0, 1, UP}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan5) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{5, {{0, 1, UP}}, {}},
/* Processing is very late */
{300, {}, {{0, 1, UP}}},
/* Immediately press key again */
{300, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan6) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{5, {{0, 1, UP}}, {}},
/* Processing is very late */
{300, {}, {{0, 1, UP}}},
/* Press key again after 1ms */
{301, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan7) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
{5, {{0, 1, UP}}, {}},
/* Press key again before debounce expires */
{300, {{0, 1, DOWN}}, {}},
});
time_jumps_ = true;
runEvents();
}
TEST_F(DebounceTest, OneKeyDelayedScan8) {
addEvents({ /* Time, Inputs, Outputs */
{0, {{0, 1, DOWN}}, {{0, 1, DOWN}}},
/* Processing is a bit late */
{50, {}, {}},
/* Release key after 1ms */
{51, {{0, 1, UP}}, {}},
/* Processing is a bit late again */
{100, {}, {{0, 1, UP}}},
});
time_jumps_ = true;
runEvents();
}

5
quantum/debounce/tests/rules.mk
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@ -37,3 +37,8 @@ debounce_sym_eager_pr_DEFS := $(DEBOUNCE_COMMON_DEFS)
debounce_sym_eager_pr_SRC := $(DEBOUNCE_COMMON_SRC) \
$(QUANTUM_PATH)/debounce/sym_eager_pr.c \
$(QUANTUM_PATH)/debounce/tests/sym_eager_pr_tests.cpp
debounce_asym_eager_defer_pk_DEFS := $(DEBOUNCE_COMMON_DEFS)
debounce_asym_eager_defer_pk_SRC := $(DEBOUNCE_COMMON_SRC) \
$(QUANTUM_PATH)/debounce/asym_eager_defer_pk.c \
$(QUANTUM_PATH)/debounce/tests/asym_eager_defer_pk_tests.cpp

3
quantum/debounce/tests/testlist.mk
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@ -2,4 +2,5 @@ TEST_LIST += \
debounce_sym_defer_g \
debounce_sym_defer_pk \
debounce_sym_eager_pk \
debounce_sym_eager_pr
debounce_sym_eager_pr \
debounce_asym_eager_defer_pk

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