Updated my files and added debouncing

4 files changed, 211 insertions, 53 deletions

diff --git a/keyboards/deltasplit75/keymaps/itsaferbie/config.h b/keyboards/deltasplit75/keymaps/itsaferbie/config.h
index 4fb2554e0..b32d08290 100644
--- a/keyboards/deltasplit75/keymaps/itsaferbie/config.h
+++ b/keyboards/deltasplit75/keymaps/itsaferbie/config.h
@@ -29,3 +29,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef SUBPROJECT_protosplit
     #include "../../protosplit/config.h"
 #endif
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 20
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
diff --git a/keyboards/deltasplit75/keymaps/itsaferbie/keymap.c b/keyboards/deltasplit75/keymaps/itsaferbie/keymap.c
index 82c292f49..bc0b23868 100644
--- a/keyboards/deltasplit75/keymaps/itsaferbie/keymap.c
+++ b/keyboards/deltasplit75/keymaps/itsaferbie/keymap.c
@@ -24,16 +24,16 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * |----------------------------------------------------------------------|
      * |Shif|   |  Z|  X|  C|  V|  B|   N|  M|  ,|  .|  /|Shift |      Up| End|
      * |----------------------------------------------------------------------|
-     * |CapsLo|Gui |Alt |Sp |Mod |      Sp| Alt| Gui| Ctrl|    | Lef| Dow| Rig|
+     * |CapsLo|Gui |Alt |Mod|Sp |      Sp| Alt| Gui| Ctrl|    | Lef| Dow| Rig|
      * `----------------------------------------------------------------------'
      */
 	KEYMAP_V2(
 		KC_ESC,  KC_F1,   KC_F2,   KC_F3,  KC_F4, KC_F5,  KC_F6,            KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR,  KC_INS,  KC_DEL, 
 		KC_GRV,  KC_1,    KC_2,    KC_3,   KC_4,  KC_5,   KC_6,             KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,  KC_TRNS, KC_HOME, // KC_TRNS is the unneeded key in the split backspace.
 		KC_TAB,  KC_Q,    KC_W,    KC_E,   KC_R,  KC_T,                     KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC,  KC_BSLS, KC_PGUP, 
-		KC_LCTL, KC_A,    KC_S,    KC_D,   KC_F,  KC_G,                     KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_TRNS,  KC_ENT,  KC_PGDN, // KC_TRNS is unneeded ISO enter key. 
+		KC_LCTL, KC_A,    KC_S,    KC_D,   KC_F,  KC_G,                     KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_TRNS,  KC_ENT,  KC_PGDN, // KC_TRNS is uneeded ISO enter key. 
 		KC_LSFT, KC_TRNS, KC_Z,    KC_X,   KC_C,  KC_V,   KC_B,             KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,  KC_UP,   KC_END,  // KC_TRNS is uneeded ISO layout key.
-		KC_CAPS, KC_LGUI, KC_LALT,         KC_SPC, MO(1),                   KC_SPC,  KC_RALT, KC_RGUI, KC_RCTL,                   KC_LEFT,  KC_DOWN, KC_RGHT),
+		KC_CAPS, KC_LGUI, KC_LALT,         MO(1), KC_SPC,                   KC_SPC,  KC_RALT, KC_RGUI, KC_RCTL,                   KC_LEFT,  KC_DOWN, KC_RGHT),
 
 	KEYMAP_V2(
 		RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, KC_TRNS, KC_TRNS, KC_TRNS,      KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RESET, 
diff --git a/keyboards/deltasplit75/matrix.c b/keyboards/deltasplit75/matrix.c
index 138969004..4def27239 100644
--- a/keyboards/deltasplit75/matrix.c
+++ b/keyboards/deltasplit75/matrix.c
@@ -21,9 +21,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/io.h>
-#include <avr/wdt.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
+#include "wait.h"
 #include "print.h"
 #include "debug.h"
 #include "util.h"
@@ -31,6 +29,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "split_util.h"
 #include "pro_micro.h"
 #include "config.h"
+#include "timer.h"
 
 #ifdef USE_I2C
 #  include "i2c.h"
@@ -38,14 +37,29 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #  include "serial.h"
 #endif
 
-#ifndef DEBOUNCE
-#  define DEBOUNCE	5
+#ifndef DEBOUNCING_DELAY
+#   define DEBOUNCING_DELAY 5
 #endif
 
+#if (DEBOUNCING_DELAY > 0)
+    static uint16_t debouncing_time;
+    static bool debouncing = false;
+#endif
+
+#if (MATRIX_COLS <= 8)
+#    define print_matrix_header()  print("\nr/c 01234567\n")
+#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop(matrix[i])
+#    define ROW_SHIFTER ((uint8_t)1)
+#else
+#    error "Currently only supports 8 COLS"
+#endif
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
 #define ERROR_DISCONNECT_COUNT 5
 
-static uint8_t debouncing = DEBOUNCE;
-static const int ROWS_PER_HAND = MATRIX_ROWS/2;
+#define ROWS_PER_HAND (MATRIX_ROWS/2)
+
 static uint8_t error_count = 0;
 
 static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
@@ -55,11 +69,19 @@ static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
 static matrix_row_t matrix[MATRIX_ROWS];
 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
 
-static matrix_row_t read_cols(void);
-static void init_cols(void);
-static void unselect_rows(void);
-static void select_row(uint8_t row);
-
+#if (DIODE_DIRECTION == COL2ROW)
+    static void init_cols(void);
+    static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
+    static void unselect_rows(void);
+    static void select_row(uint8_t row);
+    static void unselect_row(uint8_t row);
+#elif (DIODE_DIRECTION == ROW2COL)
+    static void init_rows(void);
+    static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
+    static void unselect_cols(void);
+    static void unselect_col(uint8_t col);
+    static void select_col(uint8_t col);
+#endif
 __attribute__ ((weak))
 void matrix_init_quantum(void) {
     matrix_init_kb();
@@ -118,33 +140,54 @@ void matrix_init(void)
     }
 
     matrix_init_quantum();
+
 }
 
 uint8_t _matrix_scan(void)
 {
-    // Right hand is stored after the left in the matirx so, we need to offset it
     int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
+#if (DIODE_DIRECTION == COL2ROW)
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
+#       if (DEBOUNCING_DELAY > 0)
+            bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
+
+            if (matrix_changed) {
+                debouncing = true;
+                debouncing_time = timer_read();
+                PORTD ^= (1 << 2);
+            }
+
+#       else
+            read_cols_on_row(matrix+offset, current_row);
+#       endif
+
+    }
+
+#elif (DIODE_DIRECTION == ROW2COL)
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+#       if (DEBOUNCING_DELAY > 0)
+            bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
+            if (matrix_changed) {
+                debouncing = true;
+                debouncing_time = timer_read();
+            }
+#       else
+             read_rows_on_col(matrix+offset, current_col);
+#       endif
 
-    for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
-        select_row(i);
-        _delay_us(30);  // without this wait read unstable value.
-        matrix_row_t cols = read_cols();
-        if (matrix_debouncing[i+offset] != cols) {
-            matrix_debouncing[i+offset] = cols;
-            debouncing = DEBOUNCE;
-        }
-        unselect_rows();
     }
+#endif
 
-    if (debouncing) {
-        if (--debouncing) {
-            _delay_ms(1);
-        } else {
+#   if (DEBOUNCING_DELAY > 0)
+        if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
             for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
                 matrix[i+offset] = matrix_debouncing[i+offset];
             }
+            debouncing = false;
         }
-    }
+#   endif
 
     return 1;
 }
@@ -200,9 +243,7 @@ int serial_transaction(void) {
 
 uint8_t matrix_scan(void)
 {
-    int ret = _matrix_scan();
-
-
+    uint8_t ret = _matrix_scan();
 
 #ifdef USE_I2C
     if( i2c_transaction() ) {
@@ -226,20 +267,17 @@ uint8_t matrix_scan(void)
         TXLED0;
         error_count = 0;
     }
-
     matrix_scan_quantum();
-
     return ret;
 }
 
 void matrix_slave_scan(void) {
     _matrix_scan();
 
-    int offset = (isLeftHand) ? 0 : (MATRIX_ROWS / 2);
+    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
 
 #ifdef USE_I2C
     for (int i = 0; i < ROWS_PER_HAND; ++i) {
-        /* i2c_slave_buffer[i] = matrix[offset+i]; */
         i2c_slave_buffer[i] = matrix[offset+i];
     }
 #else // USE_SERIAL
@@ -286,33 +324,141 @@ uint8_t matrix_key_count(void)
     return count;
 }
 
-static void  init_cols(void)
+#if (DIODE_DIRECTION == COL2ROW)
+
+static void init_cols(void)
 {
-    for(int x = 0; x < MATRIX_COLS; x++) {
-        _SFR_IO8((col_pins[x] >> 4) + 1) &=  ~_BV(col_pins[x] & 0xF);
-        _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
+    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
+        uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
     }
 }
 
-static matrix_row_t read_cols(void)
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
 {
-    matrix_row_t result = 0;
-    for(int x = 0; x < MATRIX_COLS; x++) {
-        result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
+    // Store last value of row prior to reading
+    matrix_row_t last_row_value = current_matrix[current_row];
+
+    // Clear data in matrix row
+    current_matrix[current_row] = 0;
+
+    // Select row and wait for row selecton to stabilize
+    select_row(current_row);
+    wait_us(30);
+
+    // For each col...
+    for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+
+        // Select the col pin to read (active low)
+        uint8_t pin = col_pins[col_index];
+        uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
+
+        // Populate the matrix row with the state of the col pin
+        current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
     }
-    return result;
+
+    // Unselect row
+    unselect_row(current_row);
+
+    return (last_row_value != current_matrix[current_row]);
+}
+
+static void select_row(uint8_t row)
+{
+    uint8_t pin = row_pins[row];
+    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
+    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
+}
+
+static void unselect_row(uint8_t row)
+{
+    uint8_t pin = row_pins[row];
+    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
 }
 
 static void unselect_rows(void)
 {
-    for(int x = 0; x < ROWS_PER_HAND; x++) {
-        _SFR_IO8((row_pins[x] >> 4) + 1) &=  ~_BV(row_pins[x] & 0xF);
-        _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
+    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        uint8_t pin = row_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
     }
 }
 
-static void select_row(uint8_t row)
+#elif (DIODE_DIRECTION == ROW2COL)
+
+static void init_rows(void)
 {
-    _SFR_IO8((row_pins[row] >> 4) + 1) |=  _BV(row_pins[row] & 0xF);
-    _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
+    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        uint8_t pin = row_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
 }
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
+{
+    bool matrix_changed = false;
+
+    // Select col and wait for col selecton to stabilize
+    select_col(current_col);
+    wait_us(30);
+
+    // 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];
+
+        // Check row pin state
+        if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
+        {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
+        }
+        else
+        {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
+        {
+            matrix_changed = true;
+        }
+    }
+
+    // Unselect col
+    unselect_col(current_col);
+
+    return matrix_changed;
+}
+
+static void select_col(uint8_t col)
+{
+    uint8_t pin = col_pins[col];
+    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
+    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
+}
+
+static void unselect_col(uint8_t col)
+{
+    uint8_t pin = col_pins[col];
+    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+}
+
+static void unselect_cols(void)
+{
+    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
+        uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
+}
+
+#endif
diff --git a/keyboards/deltasplit75/split_util.c b/keyboards/deltasplit75/split_util.c
index 226dc1881..346cbc908 100644
--- a/keyboards/deltasplit75/split_util.c
+++ b/keyboards/deltasplit75/split_util.c
@@ -8,6 +8,7 @@
 #include "matrix.h"
 #include "keyboard.h"
 #include "config.h"
+#include "timer.h"
 
 #ifdef USE_I2C
 #  include "i2c.h"
@@ -21,7 +22,7 @@ static void setup_handedness(void) {
   #ifdef EE_HANDS
     isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
   #else
-    // I2C_MASTER_RIGHT is deprecated use MASTER_RIGHT instead since this works for both serial and i2c
+    // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
     #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
       isLeftHand = !has_usb();
     #else
@@ -33,12 +34,16 @@ static void setup_handedness(void) {
 static void keyboard_master_setup(void) {
 #ifdef USE_I2C
     i2c_master_init();
+#ifdef SSD1306OLED
+    matrix_master_OLED_init ();
+#endif
 #else
     serial_master_init();
 #endif
 }
 
 static void keyboard_slave_setup(void) {
+  timer_init();
 #ifdef USE_I2C
     i2c_slave_init(SLAVE_I2C_ADDRESS);
 #else