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Optimize matrix scanning (#343)

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Eric Tang 2016-05-23 20:42:21 -07:00 • committed by Jack Humbert
parent d66aa0abf9
commit aaa758f1d3
21 changed files with 421 additions and 518 deletions
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136
tmk_core/common/keyboard.c
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@ -1,5 +1,5 @@
/*
Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com>
Copyright 2011, 2012, 2013 Jun Wako <wakojun@gmail.com>
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
@ -27,13 +27,13 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "command.h"
#include "util.h"
#include "sendchar.h"
#ifdef BOOTMAGIC_ENABLE
#include "bootmagic.h"
#else
#include "magic.h"
#endif
#include "eeconfig.h"
#include "backlight.h"
#ifdef BOOTMAGIC_ENABLE
# include "bootmagic.h"
#else
# include "magic.h"
#endif
#ifdef MOUSEKEY_ENABLE
# include "mousekey.h"
#endif
@ -41,40 +41,35 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
# include "ps2_mouse.h"
#endif
#ifdef SERIAL_MOUSE_ENABLE
#include "serial_mouse.h"
# include "serial_mouse.h"
#endif
#ifdef ADB_MOUSE_ENABLE
#include "adb.h"
# include "adb.h"
#endif
#ifdef MATRIX_HAS_GHOST
static bool has_ghost_in_row(uint8_t row)
{
matrix_row_t matrix_row = matrix_get_row(row);
// No ghost exists when less than 2 keys are down on the row
if (((matrix_row - 1) & matrix_row) == 0)
return false;
// Ghost occurs when the row shares column line with other row
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
if (i != row && (matrix_get_row(i) & matrix_row))
return true;
static bool is_row_ghosting(uint8_t row){
matrix_row_t state = matrix_get_row(row);
/* no ghosting happens when only one key in the row is pressed */
if (!(state - 1 & state)) return false;
/* ghosting occurs when two keys in the same column are pressed */
for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
if (r != row && matrix_get_row(r) & state) return true;
}
return false;
}
#endif
__attribute__ ((weak))
void matrix_setup(void) {
}
__attribute__ ((weak)) void matrix_setup(void) {}
void keyboard_setup(void)
{
void keyboard_setup(void) {
matrix_setup();
}
void keyboard_init(void)
{
void keyboard_init(void) {
timer_init();
matrix_init();
#ifdef PS2_MOUSE_ENABLE
@ -86,104 +81,87 @@ void keyboard_init(void)
#ifdef ADB_MOUSE_ENABLE
adb_mouse_init();
#endif
#ifdef BOOTMAGIC_ENABLE
bootmagic();
#else
magic();
#endif
#ifdef BACKLIGHT_ENABLE
backlight_init();
#endif
#if defined(NKRO_ENABLE) && defined(FORCE_NKRO)
keyboard_nkro = true;
#endif
}
/*
* Do keyboard routine jobs: scan mantrix, light LEDs, ...
* This is repeatedly called as fast as possible.
*/
void keyboard_task(void)
{
static matrix_row_t matrix_prev[MATRIX_ROWS];
/* does routine keyboard jobs */
void keyboard_task(void) {
static matrix_row_t previous_matrix[MATRIX_ROWS];
#ifdef MATRIX_HAS_GHOST
static matrix_row_t matrix_ghost[MATRIX_ROWS];
static matrix_row_t deghosting_matrix[MATRIX_ROWS];
#endif
static uint8_t led_status = 0;
matrix_row_t matrix_row = 0;
matrix_row_t matrix_change = 0;
matrix_scan();
for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
matrix_row = matrix_get_row(r);
matrix_change = matrix_row ^ matrix_prev[r];
if (matrix_change) {
for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
matrix_row_t state = matrix_get_row(r);
matrix_row_t changes = state ^ previous_matrix[r];
if (changes) {
#ifdef MATRIX_HAS_GHOST
if (has_ghost_in_row(r)) {
/* Keep track of whether ghosted status has changed for
* debugging. But don't update matrix_prev until un-ghosted, or
* the last key would be lost.
if (is_row_ghosting(r)) {
/* debugs the deghosting mechanism */
/* doesn't update previous_matrix until the ghosting has stopped
* in order to prevent the last key from being lost
*/
if (debug_matrix && matrix_ghost[r] != matrix_row) {
if (debug_matrix && deghosting_matrix[r] != state) {
matrix_print();
}
matrix_ghost[r] = matrix_row;
deghosting_matrix[r] = state;
continue;
}
matrix_ghost[r] = matrix_row;
deghosting_matrix[r] = state;
#endif
if (debug_matrix) matrix_print();
for (uint8_t c = 0; c < MATRIX_COLS; c++) {
if (matrix_change & ((matrix_row_t)1<<c)) {
action_exec((keyevent_t){
.key = (keypos_t){ .row = r, .col = c },
.pressed = (matrix_row & ((matrix_row_t)1<<c)),
.time = (timer_read() | 1) /* time should not be 0 */
});
// record a processed key
matrix_prev[r] ^= ((matrix_row_t)1<<c);
// process a key per task call
goto MATRIX_LOOP_END;
for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
matrix_row_t mask = (matrix_row_t)1 << c;
if (changes & mask) {
keyevent_t event;
event.key = (keypos_t){ .row = r, .col = c };
event.pressed = state & mask;
/* the time should not be 0 */
event.time = timer_read() | 1;
action_exec(event);
/* records the processed key event */
previous_matrix[r] ^= mask;
/* processes one key event per call */
goto event_processed;
}
}
}
}
// call with pseudo tick event when no real key event.
/* sends tick events when the keyboard is idle */
action_exec(TICK);
MATRIX_LOOP_END:
event_processed:
#ifdef MOUSEKEY_ENABLE
// mousekey repeat & acceleration
/* repeats and accelerates the mouse keys */
mousekey_task();
#endif
#ifdef PS2_MOUSE_ENABLE
ps2_mouse_task();
#endif
#ifdef SERIAL_MOUSE_ENABLE
serial_mouse_task();
serial_mouse_task();
#endif
#ifdef ADB_MOUSE_ENABLE
adb_mouse_task();
adb_mouse_task();
#endif
// update LED
/* updates the LEDs */
if (led_status != host_keyboard_leds()) {
led_status = host_keyboard_leds();
keyboard_set_leds(led_status);
}
}
void keyboard_set_leds(uint8_t leds)
{
if (debug_keyboard) { debug("keyboard_set_led: "); debug_hex8(leds); debug("\n"); }
void keyboard_set_leds(uint8_t leds) {
if (debug_keyboard) dprintf("Keyboard LEDs state: %x\n", leds);
led_set(leds);
}