DO NOT USE - Removed debounce from TMK.

7 files changed, 4 insertions, 276 deletions

diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index 7a7b3928f4..335a36cfe7 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -1,5 +1,5 @@
 COMMON_DIR = common
-DEBOUNCE = $(COMMON_DIR)/debounce
+
 ifeq ($(PLATFORM),AVR)
 	PLATFORM_COMMON_DIR = $(COMMON_DIR)/avr
 else ifeq ($(PLATFORM),CHIBIOS)
@@ -12,7 +12,6 @@ endif
 
 TMK_COMMON_SRC +=	$(COMMON_DIR)/host.c \
 	$(COMMON_DIR)/keyboard.c \
-	$(COMMON_DIR)/debounce.c \
 	$(COMMON_DIR)/action.c \
 	$(COMMON_DIR)/action_tapping.c \
 	$(COMMON_DIR)/action_macro.c \
@@ -62,20 +61,6 @@ ifeq ($(PLATFORM),TEST)
 	TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/eeprom.c
 endif
 
-# Debounce Modules. If implemented in matrix.c, don't use these.
-ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
-    # Do nothing, debouncing is inside matrix.c inside split_common
-else ifeq ($(strip $(DEBOUNCE_ALGO)), manual)
-    # Do nothing. do your debouncing in matrix.c
-else ifeq ($(strip $(DEBOUNCE_ALGO)), sym_g)
-    TMK_COMMON_SRC += $(DEBOUNCE)/debounce_sym_g.c
-else ifeq ($(strip $(DEBOUNCE_ALGO)), eager_pk)
-    TMK_COMMON_SRC += $(DEBOUNCE)/debounce_eager_pk.c
-else ifeq ($(strip $(CUSTOM_MATRIX)), yes)
-    # Do nothing. Custom matrix code.
-else # default algorithm
-    TMK_COMMON_SRC += $(DEBOUNCE)/debounce_sym_g.c
-endif
 
 # Option modules
 BOOTMAGIC_ENABLE ?= no
diff --git a/tmk_core/common/debounce.c b/tmk_core/common/debounce.c
deleted file mode 100644
index 406d2d0f38..0000000000
--- a/tmk_core/common/debounce.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
-Copyright 2017 Alex Ong<the.onga@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
-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 "debounce.h"
-#include "matrix.h"
-//Default implementation - no debouncing
-__attribute__((weak)) void matrix_debounce_init(void) {}
-__attribute__((weak)) void matrix_debounce(void) {}
-__attribute__((weak)) matrix_row_t matrix_debounce_get_row(uint8_t row)
-{
-  return matrix_get_row(row);
-}
diff --git a/tmk_core/common/debounce.h b/tmk_core/common/debounce.h
deleted file mode 100644
index fe3effab32..0000000000
--- a/tmk_core/common/debounce.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef DEBOUNCE_H
-#define DEBOUNCE_H
-#include <stdbool.h>
-#include <stdint.h>
-#include "matrix.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
-  /* called to initialize any data stores your implementation has*/
-  void matrix_debounce_init(void);
-  /* call this every keyboard_task to debounce the matrix*/
-  void matrix_debounce(void);
-  /* matrix state on row */
-  matrix_row_t matrix_debounce_get_row(uint8_t row);
-  /* whether a switch is on */
-  bool matrix_debounce_is_on(uint8_t row, uint8_t col);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/tmk_core/common/debounce/debounce_eager_pk.c b/tmk_core/common/debounce/debounce_eager_pk.c
deleted file mode 100644
index 984da0570a..0000000000
--- a/tmk_core/common/debounce/debounce_eager_pk.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
-Copyright 2017 Alex Ong<the.onga@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
-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 per-key algorithm. Uses an 8-bit counter per key.
-After pressing a key, it immediately changes state, and sets a counter.
-No further inputs are accepted until DEBOUNCE milliseconds have occurred.
-*/
-
-#include "debounce.h"
-#include "matrix.h"
-#include "timer.h"
-
-#ifndef DEBOUNCE
-  #define DEBOUNCE 5
-#endif
-
-
-#if (MATRIX_COLS <= 8)
-#    define ROW_SHIFTER ((uint8_t)1)
-#elif (MATRIX_COLS <= 16)
-#    define ROW_SHIFTER ((uint16_t)1)
-#elif (MATRIX_COLS <= 32)
-#    define ROW_SHIFTER  ((uint32_t)1)
-#endif
-
-
-
-#define debounce_counter_t uint8_t
-
-static matrix_row_t matrix_debounced[MATRIX_ROWS];
-static debounce_counter_t debounce_counters[MATRIX_ROWS*MATRIX_COLS];
-
-#define DEBOUNCE_ELAPSED 251
-#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1)
-
-void update_debounce_counters(uint8_t current_time);
-void transfer_matrix_values(uint8_t current_time);
-
-void matrix_debounce_init(void)
-{
-  for (uint8_t r = 0; r < MATRIX_ROWS; r++)
-  {
-    matrix_debounced[r] = 0;
-  }
-
-  int i = 0;
-  for (uint8_t r = 0; r < MATRIX_ROWS; r++)
-  {
-    for (uint8_t c = 0; c < MATRIX_COLS; c++)
-    {
-      debounce_counters[i++] = DEBOUNCE_ELAPSED;
-    }
-  }
-}
-
-void matrix_debounce(void)
-{
-  uint8_t current_time = timer_read() % MAX_DEBOUNCE;
-  update_debounce_counters(current_time);
-  transfer_matrix_values(current_time);
-}
-
-//If the current time is > debounce counter, set the counter to enable input.
-void update_debounce_counters(uint8_t current_time)
-{
-  debounce_counter_t *debounce_pointer = debounce_counters;
-  for (uint8_t row = 0; row < MATRIX_ROWS; row++)
-  {
-    for (uint8_t col = 0; col < MATRIX_COLS; col++)
-    {
-      if (*debounce_pointer != DEBOUNCE_ELAPSED)
-      {
-        if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >=
-            DEBOUNCING_DELAY) {
-          *debounce_pointer = DEBOUNCE_ELAPSED;
-        }
-      }
-      debounce_pointer++;
-    }
-  }
-}
-
-// upload from raw_matrix to final matrix;
-void transfer_matrix_values(uint8_t current_time)
-{
-  debounce_counter_t *debounce_pointer = debounce_counters;
-  for (uint8_t row = 0; row < MATRIX_ROWS; row++)
-  {
-    matrix_row_t existing_row = matrix_debounced[row]; 
-    matrix_row_t raw_row = matrix_get_row(row);
-
-    for (uint8_t col = 0; col < MATRIX_COLS; col++)
-    {
-      matrix_row_t col_mask = (ROW_SHIFTER << col);
-      bool final_value = raw_row & col_mask;
-      bool existing_value = existing_row & col_mask;
-      if (*debounce_pointer == DEBOUNCE_ELAPSED &&
-          (existing_value != final_value))
-      {
-        *debounce_pointer = current_time;
-        existing_row ^= col_mask; //flip the bit.
-      }
-      debounce_pointer++;
-    }
-    matrix_debounced[row] = existing_row;
-  }  
-}
-
-matrix_row_t matrix_debounce_get_row(uint8_t row)
-{
-  return matrix_debounced[row];
-}
diff --git a/tmk_core/common/debounce/debounce_sym_g.c b/tmk_core/common/debounce/debounce_sym_g.c
deleted file mode 100644
index 2fb7a589d7..0000000000
--- a/tmk_core/common/debounce/debounce_sym_g.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
-Copyright 2017 Alex Ong<the.onga@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
-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 global debounce algorithm. Used in 99% of keyboards at time of implementation
-When no state changes have occured for DEBOUNCE milliseconds, we push the state.
-*/
-#include "debounce.h"
-#include "matrix.h"
-#include "timer.h"
-#ifndef DEBOUNCE
-  #define DEBOUNCE 5
-#endif
-static matrix_row_t matrix_debounced[MATRIX_ROWS];
-static bool debouncing = false;
-static uint16_t debouncing_time;
-
-void matrix_debounce_init(void)
-{
-  for (uint8_t r = 0; r < MATRIX_ROWS; r++)
-  {
-    matrix_debounced[r] = 0;
-  }
-}
-
-void matrix_debounce(void)
-{
-  for (uint8_t r = 0; r < MATRIX_ROWS; r++)
-  {
-    matrix_row_t raw = matrix_get_row(r);
-    if (raw != matrix_debounced[r])
-    {
-      debouncing = true;
-      debouncing_time = timer_read();
-    }
-  }
-  if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
-    for (int i = 0; i < MATRIX_ROWS; i++) {
-      matrix_debounced[i] = matrix_get_row(i);
-    }
-    debouncing = false;
-  }
-}
-
-matrix_row_t matrix_debounce_get_row(uint8_t row)
-{
-  return matrix_debounced[row];
-}
diff --git a/tmk_core/common/debounce/readme.md b/tmk_core/common/debounce/readme.md
deleted file mode 100644
index 1a77d44df5..0000000000
--- a/tmk_core/common/debounce/readme.md
+++ /dev/null
@@ -1,28 +0,0 @@
-Debounce algorithms belong in this folder.
-Here are a few ideas
-
-1) Global vs Per-Key vs Per-Row
- * Global - one timer for all keys. Any key change state affects global timer
- * Per key - one timer per key
- * Per row - one timer per row
-
-2) Eager vs symmetric vs assymetric
- * Eager - any key change is reported immediately. All further inputs for DEBOUNCE ms are ignored.
- * Symmetric - wait for no changes for DEBOUNCE ms before reporting change
- * Assymetric - wait for different times depending on key-down/key-up. E.g. Eager key-down, DEBOUNCE ms key up.
-
-3) Timestamp vs cycles
- * old old old code waits n cycles, decreasing count by one each matrix_scan
- * newer code stores the millisecond the change occurred, and does subraction to figure out time elapsed.
- * Timestamps are superior, i don't think cycles will ever be used again once upgraded.
-
-The default algorithm is symmetric and global.
-Here are a few that could be implemented:
-
-debounce_sym_g.c
-debounce_sym_pk.c 
-debounce_sym_pr.c 
-debounce_sym_pr_cycles.c //currently used in ergo-dox
-debounce_eager_g.c
-debounce_eager_pk.c
-debounce_eager_pr.c //could be used in ergo-dox!
diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index 1bfd4c9cca..d223001160 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -18,7 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <stdint.h>
 #include "keyboard.h"
 #include "matrix.h"
-#include "debounce.h"
 #include "keymap.h"
 #include "host.h"
 #include "led.h"
@@ -164,8 +163,7 @@ bool is_keyboard_master(void) {
  */
 void keyboard_init(void) {
     timer_init();
-    matrix_init();
-    matrix_debounce_init();
+    matrix_init();    
 #ifdef QWIIC_ENABLE
     qwiic_init();
 #endif
@@ -225,12 +223,11 @@ void keyboard_task(void)
     uint8_t keys_processed = 0;
 #endif
 
-    matrix_scan();
-    matrix_debounce();
+    matrix_scan();    
 
     if (is_keyboard_master()) {
         for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
-            matrix_row = matrix_debounce_get_row(r);
+            matrix_row = matrix_get_row(r);
             matrix_change = matrix_row ^ matrix_prev[r];
             if (matrix_change) {
 #ifdef MATRIX_HAS_GHOST