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Use single memcmp to determine if matrix changed. (#13064)

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* Use memcmp to determine if matrix changed.

* Firmware size issues.

* Add documentation for the lack of need of MATRIX_ROW_PINS/MATRIX_COL_PINS, when overriding low-level matrix functions.
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Nick Brassel 2021-06-09 17:19:42 +10:00 committed by GitHub
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8 changed files with 131 additions and 79 deletions
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3
docs/config_options.md
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@ -51,8 +51,10 @@ This is a C header file that is one of the first things included, and will persi
* the number of columns in your keyboard's matrix
* `#define MATRIX_ROW_PINS { D0, D5, B5, B6 }`
* pins of the rows, from top to bottom
* may be omitted by the keyboard designer if matrix reads are handled in an alternate manner. See [low-level matrix overrides](custom_quantum_functions.md?id=low-level-matrix-overrides) for more information.
* `#define MATRIX_COL_PINS { F1, F0, B0, C7, F4, F5, F6, F7, D4, D6, B4, D7 }`
* pins of the columns, from left to right
* may be omitted by the keyboard designer if matrix reads are handled in an alternate manner. See [low-level matrix overrides](custom_quantum_functions.md?id=low-level-matrix-overrides) for more information.
* `#define MATRIX_IO_DELAY 30`
* the delay in microseconds when between changing matrix pin state and reading values
* `#define UNUSED_PINS { D1, D2, D3, B1, B2, B3 }`
@ -280,6 +282,7 @@ There are a few different ways to set handedness for split keyboards (listed in
* `#define MATRIX_ROW_PINS_RIGHT { <row pins> }`
* `#define MATRIX_COL_PINS_RIGHT { <col pins> }`
* If you want to specify a different pinout for the right half than the left half, you can define `MATRIX_ROW_PINS_RIGHT`/`MATRIX_COL_PINS_RIGHT`. Currently, the size of `MATRIX_ROW_PINS` must be the same as `MATRIX_ROW_PINS_RIGHT` and likewise for the definition of columns.
* may be omitted by the keyboard designer if matrix reads are handled in an alternate manner. See [low-level matrix overrides](custom_quantum_functions.md?id=low-level-matrix-overrides) for more information.
* `#define DIRECT_PINS_RIGHT { { F1, F0, B0, C7 }, { F4, F5, F6, F7 } }`
* If you want to specify a different direct pinout for the right half than the left half, you can define `DIRECT_PINS_RIGHT`. Currently, the size of `DIRECT_PINS` must be the same as `DIRECT_PINS_RIGHT`.

8
docs/custom_quantum_functions.md
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@ -144,6 +144,14 @@ This is useful for setting up stuff that you may need elsewhere, but isn't hardw
* Keyboard/Revision: `void matrix_init_kb(void)`
* Keymap: `void matrix_init_user(void)`
### Low-level Matrix Overrides Function Documentation :id=low-level-matrix-overrides
* GPIO pin initialisation: `void matrix_init_pins(void)`
* This needs to perform the low-level initialisation of all row and column pins. By default this will initialise the input/output state of each of the GPIO pins listed in `MATRIX_ROW_PINS` and `MATRIX_COL_PINS`, based on whether or not the keyboard is set up for `ROW2COL`, `COL2ROW`, or `DIRECT_PINS`. Should the keyboard designer override this function, no initialisation of pin state will occur within QMK itself, instead deferring to the keyboard's override.
* `COL2ROW`-based row reads: `void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)`
* `ROW2COL`-based column reads: `void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)`
* `DIRECT_PINS`-based reads: `void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)`
* These three functions need to perform the low-level retrieval of matrix state of relevant input pins, based on the matrix type. Only one of the functions should be implemented, if needed. By default this will iterate through `MATRIX_ROW_PINS` and `MATRIX_COL_PINS`, configuring the inputs and outputs based on whether or not the keyboard is set up for `ROW2COL`, `COL2ROW`, or `DIRECT_PINS`. Should the keyboard designer override this function, no manipulation of matrix GPIO pin state will occur within QMK itself, instead deferring to the keyboard's override.
## Keyboard Post Initialization code

19
keyboards/anavi/macropad8/keymaps/default/config.h Normal file
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@ -0,0 +1,19 @@
/* Copyright 2021 QMK
*
* 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/>.
*/
#pragma once
#define LAYER_STATE_8BIT

19
keyboards/handwired/frankie_macropad/keymaps/default/config.h Normal file
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@ -0,0 +1,19 @@
/* Copyright 2021 QMK
*
* 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/>.
*/
#pragma once
#define LAYER_STATE_8BIT

2
keyboards/kbdfans/kbd67/rev1/keymaps/default/config.h
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@ -16,4 +16,4 @@
#pragma once
// place overrides here
#define LAYER_STATE_8BIT

19
keyboards/mt84/keymaps/default/config.h Normal file
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@ -0,0 +1,19 @@
/* Copyright 2021 QMK
*
* 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/>.
*/
#pragma once
#define LAYER_STATE_8BIT

57
quantum/matrix.c
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@ -16,6 +16,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "util.h"
#include "matrix.h"
#include "debounce.h"
@ -24,14 +25,23 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifdef DIRECT_PINS
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
# ifdef MATRIX_ROW_PINS
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
# endif // MATRIX_ROW_PINS
# ifdef MATRIX_COL_PINS
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
# endif // MATRIX_COL_PINS
#endif
/* matrix state(1:on, 0:off) */
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
// user-defined overridable functions
__attribute__((weak)) void matrix_init_pins(void);
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
static inline void setPinOutput_writeLow(pin_t pin) {
ATOMIC_BLOCK_FORCEON {
setPinOutput(pin);
@ -58,7 +68,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
@ -69,15 +79,12 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
}
}
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
// Update the matrix
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
#elif defined(DIODE_DIRECTION)
# if defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
# if (DIODE_DIRECTION == COL2ROW)
static void select_row(uint8_t row) { setPinOutput_writeLow(row_pins[row]); }
@ -97,7 +104,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
@ -118,12 +125,8 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
unselect_row(current_row);
matrix_output_unselect_delay(); // wait for all Col signals to go HIGH
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
// Update the matrix
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
# elif (DIODE_DIRECTION == ROW2COL)
@ -145,45 +148,32 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
bool matrix_changed = false;
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
// Select col
select_col(current_col);
matrix_output_select_delay();
// For each row...
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
matrix_row_t current_row_value = last_row_value;
// Check row pin state
if (readPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
} else {
// Pin HI, clear col bit
current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
}
// Determine if the matrix changed state
if ((last_row_value != current_row_value)) {
matrix_changed |= true;
current_matrix[row_index] = current_row_value;
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
}
}
// Unselect col
unselect_col(current_col);
matrix_output_unselect_delay(); // wait for all Row signals to go HIGH
return matrix_changed;
}
# else
# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
# endif
# endif // defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
#else
# error DIODE_DIRECTION is not defined!
#endif
@ -204,20 +194,23 @@ void matrix_init(void) {
}
uint8_t matrix_scan(void) {
bool changed = false;
matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
// Set row, read cols
for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
changed |= matrix_read_cols_on_row(raw_matrix, current_row);
matrix_read_cols_on_row(curr_matrix, current_row);
}
#elif (DIODE_DIRECTION == ROW2COL)
// Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
changed |= matrix_read_rows_on_col(raw_matrix, current_col);
matrix_read_rows_on_col(curr_matrix, current_col);
}
#endif
bool changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
if (changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
matrix_scan_quantum();

55
quantum/split_common/matrix.c
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@ -16,6 +16,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "util.h"
#include "matrix.h"
#include "debounce.h"
@ -31,8 +32,12 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifdef DIRECT_PINS
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
# ifdef MATRIX_ROW_PINS
static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
# endif // MATRIX_ROW_PINS
# ifdef MATRIX_COL_PINS
static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
# endif // MATRIX_COL_PINS
#endif
/* matrix state(1:on, 0:off) */
@ -45,6 +50,9 @@ uint8_t thisHand, thatHand;
// user-defined overridable functions
__attribute__((weak)) void matrix_slave_scan_kb(void) { matrix_slave_scan_user(); }
__attribute__((weak)) void matrix_slave_scan_user(void) {}
__attribute__((weak)) void matrix_init_pins(void);
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
static inline void setPinOutput_writeLow(pin_t pin) {
ATOMIC_BLOCK_FORCEON {
@ -72,7 +80,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
@ -83,15 +91,12 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
}
}
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
// Update the matrix
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
#elif defined(DIODE_DIRECTION)
# if defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
# if (DIODE_DIRECTION == COL2ROW)
static void select_row(uint8_t row) { setPinOutput_writeLow(row_pins[row]); }
@ -111,7 +116,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
@ -132,12 +137,8 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
unselect_row(current_row);
matrix_output_unselect_delay(); // wait for all Col signals to go HIGH
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
// Update the matrix
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
# elif (DIODE_DIRECTION == ROW2COL)
@ -159,45 +160,32 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
bool matrix_changed = false;
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
// Select col
select_col(current_col);
matrix_output_select_delay();
// For each row...
for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
matrix_row_t current_row_value = last_row_value;
// Check row pin state
if (readPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
} else {
// Pin HI, clear col bit
current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
}
// Determine if the matrix changed state
if ((last_row_value != current_row_value)) {
matrix_changed |= true;
current_matrix[row_index] = current_row_value;
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
}
}
// Unselect col
unselect_col(current_col);
matrix_output_unselect_delay(); // wait for all Row signals to go HIGH
return matrix_changed;
}
# else
# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
# endif
# endif // defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
#else
# error DIODE_DIRECTION is not defined!
#endif
@ -288,20 +276,23 @@ bool matrix_post_scan(void) {
}
uint8_t matrix_scan(void) {
bool local_changed = false;
matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
// Set row, read cols
for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
local_changed |= matrix_read_cols_on_row(raw_matrix, current_row);
matrix_read_cols_on_row(curr_matrix, current_row);
}
#elif (DIODE_DIRECTION == ROW2COL)
// Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
local_changed |= matrix_read_rows_on_col(raw_matrix, current_col);
matrix_read_rows_on_col(curr_matrix, current_col);
}
#endif
bool local_changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
if (local_changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, local_changed);
bool remote_changed = matrix_post_scan();