diff --git a/docs/feature_debounce_type.md b/docs/feature_debounce_type.md
index 5d4343f08b..38eca3f37c 100644
--- a/docs/feature_debounce_type.md
+++ b/docs/feature_debounce_type.md
@@ -33,7 +33,10 @@ The debounce code is compatible with split keyboards.
# 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_pk - debouncing per key. On any state change, response is immediate, followed by ```DEBOUNCE_DELAY``` millseconds of no further input for that key
+* 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 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.
+* 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.
diff --git a/keyboards/ergodox_ez/matrix.c b/keyboards/ergodox_ez/matrix.c
index 860cf7b229..97f764113b 100644
--- a/keyboards/ergodox_ez/matrix.c
+++ b/keyboards/ergodox_ez/matrix.c
@@ -33,14 +33,14 @@ along with this program. If not, see .
#include "debug.h"
#include "util.h"
#include "matrix.h"
+#include "debounce.h"
#include QMK_KEYBOARD_H
#ifdef DEBUG_MATRIX_SCAN_RATE
-#include "timer.h"
+# include "timer.h"
#endif
/*
- * This constant define not debouncing time in msecs, but amount of matrix
- * scan loops which should be made to get stable debounced results.
+ * This constant define not debouncing time in msecs, assuming eager_pr.
*
* On Ergodox matrix scan rate is relatively low, because of slow I2C.
* Now it's only 317 scans/second, or about 3.15 msec/scan.
@@ -52,26 +52,17 @@ along with this program. If not, see .
*/
#ifndef DEBOUNCE
-# define DEBOUNCE 5
+# define DEBOUNCE 5
#endif
/* matrix state(1:on, 0:off) */
-static matrix_row_t matrix[MATRIX_ROWS];
-/*
- * matrix state(1:on, 0:off)
- * contains the raw values without debounce filtering of the last read cycle.
- */
-static matrix_row_t raw_matrix[MATRIX_ROWS];
-
-// Debouncing: store for each key the number of scans until it's eligible to
-// change. When scanning the matrix, ignore any changes in keys that have
-// already changed in the last DEBOUNCE scans.
-static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS];
+static matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
+static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
static matrix_row_t read_cols(uint8_t row);
-static void init_cols(void);
-static void unselect_rows(void);
-static void select_row(uint8_t row);
+static void init_cols(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
static uint8_t mcp23018_reset_loop;
// static uint16_t mcp23018_reset_loop;
@@ -81,197 +72,137 @@ uint32_t matrix_timer;
uint32_t matrix_scan_count;
#endif
+__attribute__((weak)) void matrix_init_user(void) {}
-__attribute__ ((weak))
-void matrix_init_user(void) {}
+__attribute__((weak)) void matrix_scan_user(void) {}
-__attribute__ ((weak))
-void matrix_scan_user(void) {}
+__attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
-__attribute__ ((weak))
-void matrix_init_kb(void) {
- matrix_init_user();
-}
+__attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
-__attribute__ ((weak))
-void matrix_scan_kb(void) {
- matrix_scan_user();
-}
-
-inline
-uint8_t matrix_rows(void)
-{
- return MATRIX_ROWS;
-}
+inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }
-inline
-uint8_t matrix_cols(void)
-{
- return MATRIX_COLS;
-}
+inline uint8_t matrix_cols(void) { return MATRIX_COLS; }
-void matrix_init(void)
-{
- // initialize row and col
+void matrix_init(void) {
+ // initialize row and col
- mcp23018_status = init_mcp23018();
+ mcp23018_status = init_mcp23018();
+ unselect_rows();
+ init_cols();
- unselect_rows();
- init_cols();
-
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
- matrix[i] = 0;
- raw_matrix[i] = 0;
- for (uint8_t j=0; j < MATRIX_COLS; ++j) {
- debounce_matrix[i * MATRIX_COLS + j] = 0;
- }
- }
+ // initialize matrix state: all keys off
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ raw_matrix[i] = 0;
+ }
#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_timer = timer_read32();
- matrix_scan_count = 0;
+ matrix_timer = timer_read32();
+ matrix_scan_count = 0;
#endif
-
- matrix_init_quantum();
-
+ debounce_init(MATRIX_ROWS);
+ matrix_init_quantum();
}
void matrix_power_up(void) {
- mcp23018_status = init_mcp23018();
+ mcp23018_status = init_mcp23018();
- unselect_rows();
- init_cols();
+ unselect_rows();
+ init_cols();
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
- matrix[i] = 0;
- }
+ // initialize matrix state: all keys off
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ }
#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_timer = timer_read32();
- matrix_scan_count = 0;
+ matrix_timer = timer_read32();
+ matrix_scan_count = 0;
#endif
}
-// Returns a matrix_row_t whose bits are set if the corresponding key should be
-// eligible to change in this scan.
-matrix_row_t debounce_mask(matrix_row_t rawcols, uint8_t row) {
- matrix_row_t result = 0;
- matrix_row_t change = rawcols ^ raw_matrix[row];
- raw_matrix[row] = rawcols;
- for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
- if (debounce_matrix[row * MATRIX_COLS + i]) {
- --debounce_matrix[row * MATRIX_COLS + i];
- } else {
- result |= (1 << i);
- }
- if (change & (1 << i)) {
- debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
+uint8_t matrix_scan(void) {
+ if (mcp23018_status) { // if there was an error
+ if (++mcp23018_reset_loop == 0) {
+ // if (++mcp23018_reset_loop >= 1300) {
+ // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
+ // this will be approx bit more frequent than once per second
+ print("trying to reset mcp23018\n");
+ mcp23018_status = init_mcp23018();
+ if (mcp23018_status) {
+ print("left side not responding\n");
+ } else {
+ print("left side attached\n");
+ ergodox_blink_all_leds();
+ }
}
}
- return result;
-}
-
-matrix_row_t debounce_read_cols(uint8_t row) {
- // Read the row without debouncing filtering and store it for later usage.
- matrix_row_t cols = read_cols(row);
- // Get the Debounce mask.
- matrix_row_t mask = debounce_mask(cols, row);
- // debounce the row and return the result.
- return (cols & mask) | (matrix[row] & ~mask);;
-}
-
-uint8_t matrix_scan(void)
-{
- if (mcp23018_status) { // if there was an error
- if (++mcp23018_reset_loop == 0) {
- // if (++mcp23018_reset_loop >= 1300) {
- // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
- // this will be approx bit more frequent than once per second
- print("trying to reset mcp23018\n");
- mcp23018_status = init_mcp23018();
- if (mcp23018_status) {
- print("left side not responding\n");
- } else {
- print("left side attached\n");
- ergodox_blink_all_leds();
- }
- }
- }
#ifdef DEBUG_MATRIX_SCAN_RATE
- matrix_scan_count++;
+ matrix_scan_count++;
- uint32_t timer_now = timer_read32();
- if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
- print("matrix scan frequency: ");
- pdec(matrix_scan_count);
- print("\n");
+ uint32_t timer_now = timer_read32();
+ if (TIMER_DIFF_32(timer_now, matrix_timer) > 1000) {
+ print("matrix scan frequency: ");
+ pdec(matrix_scan_count);
+ print("\n");
- matrix_timer = timer_now;
- matrix_scan_count = 0;
- }
+ matrix_timer = timer_now;
+ matrix_scan_count = 0;
+ }
#endif
#ifdef LEFT_LEDS
- mcp23018_status = ergodox_left_leds_update();
-#endif // LEFT_LEDS
- for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) {
- select_row(i);
- // and select on left hand
- select_row(i + MATRIX_ROWS_PER_SIDE);
- // we don't need a 30us delay anymore, because selecting a
- // left-hand row requires more than 30us for i2c.
-
- // grab cols from left hand
- matrix[i] = debounce_read_cols(i);
- // grab cols from right hand
- matrix[i + MATRIX_ROWS_PER_SIDE] = debounce_read_cols(i + MATRIX_ROWS_PER_SIDE);
-
- unselect_rows();
- }
-
- matrix_scan_quantum();
+ mcp23018_status = ergodox_left_leds_update();
+#endif // LEFT_LEDS
+ for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) {
+ // select rows from left and right hands
+ select_row(i);
+ select_row(i + MATRIX_ROWS_PER_SIDE);
+
+ // we don't need a 30us delay anymore, because selecting a
+ // left-hand row requires more than 30us for i2c.
+
+ // grab left + right cols.
+ raw_matrix[i] = read_cols(i);
+ raw_matrix[i+MATRIX_ROWS_PER_SIDE] = read_cols(i+MATRIX_ROWS_PER_SIDE);
+
+ unselect_rows();
+ }
+
+ debounce(raw_matrix, matrix, MATRIX_ROWS, true);
+ matrix_scan_quantum();
- return 1;
+ return 1;
}
-bool matrix_is_modified(void) // deprecated and evidently not called.
+bool matrix_is_modified(void) // deprecated and evidently not called.
{
- return true;
+ return true;
}
-inline
-bool matrix_is_on(uint8_t row, uint8_t col)
-{
- return (matrix[row] & ((matrix_row_t)1<> 2));
+ uint8_t data = 0;
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT);
+ if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(GPIOB, ERGODOX_EZ_I2C_TIMEOUT);
+ if (mcp23018_status) goto out;
+ mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT);
+ if (mcp23018_status) goto out;
+ mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT);
+ if (mcp23018_status < 0) goto out;
+ data = ~((uint8_t)mcp23018_status);
+ mcp23018_status = I2C_STATUS_SUCCESS;
+ out:
+ i2c_stop();
+ return data;
}
+ } else {
+ /* read from teensy
+ * bitmask is 0b11110011, but we want those all
+ * in the lower six bits.
+ * we'll return 1s for the top two, but that's harmless.
+ */
+
+ return ~((PINF & 0x03) | ((PINF & 0xF0) >> 2));
+ }
}
/* Row pin configuration
@@ -333,69 +266,70 @@ static matrix_row_t read_cols(uint8_t row)
* row: 0 1 2 3 4 5 6
* pin: A0 A1 A2 A3 A4 A5 A6
*/
-static void unselect_rows(void)
-{
- // no need to unselect on mcp23018, because the select step sets all
- // the other row bits high, and it's not changing to a different
- // direction
-
- // unselect on teensy
- // Hi-Z(DDR:0, PORT:0) to unselect
- DDRB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
- PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
- DDRD &= ~(1<<2 | 1<<3);
- PORTD &= ~(1<<2 | 1<<3);
- DDRC &= ~(1<<6);
- PORTC &= ~(1<<6);
+static void unselect_rows(void) {
+ // no need to unselect on mcp23018, because the select step sets all
+ // the other row bits high, and it's not changing to a different
+ // direction
+
+ // unselect on teensy
+ // Hi-Z(DDR:0, PORT:0) to unselect
+ DDRB &= ~(1 << 0 | 1 << 1 | 1 << 2 | 1 << 3);
+ PORTB &= ~(1 << 0 | 1 << 1 | 1 << 2 | 1 << 3);
+ DDRD &= ~(1 << 2 | 1 << 3);
+ PORTD &= ~(1 << 2 | 1 << 3);
+ DDRC &= ~(1 << 6);
+ PORTC &= ~(1 << 6);
}
-static void select_row(uint8_t row)
-{
- if (row < 7) {
- // select on mcp23018
- if (mcp23018_status) { // if there was an error
- // do nothing
- } else {
- // set active row low : 0
- // set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF & ~(1<
+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 .
+*/
+
+/*
+Basic per-row algorithm. Uses an 8-bit counter per row.
+After pressing a key, it immediately changes state, and sets a counter.
+No further inputs are accepted until DEBOUNCE milliseconds have occurred.
+*/
+
+#include "matrix.h"
+#include "timer.h"
+#include "quantum.h"
+#include
+
+#ifndef DEBOUNCE
+ #define DEBOUNCE 5
+#endif
+
+
+#define debounce_counter_t uint8_t
+
+static debounce_counter_t *debounce_counters;
+
+#define DEBOUNCE_ELAPSED 251
+#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1)
+
+void update_debounce_counters(uint8_t num_rows, uint8_t current_time);
+void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time);
+
+//we use num_rows rather than MATRIX_ROWS to support split keyboards
+void debounce_init(uint8_t num_rows)
+{
+ debounce_counters = (debounce_counter_t*)malloc(num_rows*sizeof(debounce_counter_t));
+ for (uint8_t r = 0; r < num_rows; r++)
+ {
+ debounce_counters[r] = DEBOUNCE_ELAPSED;
+ }
+}
+
+void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed)
+{
+ uint8_t current_time = timer_read() % MAX_DEBOUNCE;
+ update_debounce_counters(num_rows, current_time);
+ transfer_matrix_values(raw, cooked, num_rows, current_time);
+}
+
+//If the current time is > debounce counter, set the counter to enable input.
+void update_debounce_counters(uint8_t num_rows, uint8_t current_time)
+{
+ debounce_counter_t *debounce_pointer = debounce_counters;
+ for (uint8_t row = 0; row < num_rows; row++)
+ {
+ if (*debounce_pointer != DEBOUNCE_ELAPSED)
+ {
+ if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >= DEBOUNCE) {
+ *debounce_pointer = DEBOUNCE_ELAPSED;
+ }
+ }
+ debounce_pointer++;
+ }
+}
+
+// upload from raw_matrix to final matrix;
+void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time)
+{
+ debounce_counter_t *debounce_pointer = debounce_counters;
+ for (uint8_t row = 0; row < num_rows; row++)
+ {
+ matrix_row_t existing_row = cooked[row];
+ matrix_row_t raw_row = raw[row];
+
+ //determine new value basd on debounce pointer + raw value
+ if (*debounce_pointer == DEBOUNCE_ELAPSED &&
+ (existing_row != raw_row))
+ {
+ *debounce_pointer = current_time;
+ existing_row = raw_row;
+ }
+ cooked[row] = existing_row;
+
+ debounce_pointer++;
+ }
+}
+
+bool debounce_active(void)
+{
+ return true;
+}
+
diff --git a/quantum/debounce/readme.md b/quantum/debounce/readme.md
index 5b318d845e..f77f78c764 100644
--- a/quantum/debounce/readme.md
+++ b/quantum/debounce/readme.md
@@ -22,7 +22,7 @@ Here are a few that could be implemented:
sym_g.c
sym_pk.c
sym_pr.c
-sym_pr_cycles.c //currently used in ergo-dox
+sym_pr_cycles.c
eager_g.c
eager_pk.c
eager_pr.c //could be used in ergo-dox!