[Keyboard] Add KMAC PAD (#13104)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

9 files changed, 603 insertions, 0 deletions

diff --git a/keyboards/kmac_pad/config.h b/keyboards/kmac_pad/config.h
new file mode 100644
index 0000000000..eb33a994b3
--- /dev/null
+++ b/keyboards/kmac_pad/config.h
@@ -0,0 +1,102 @@
+/*
+Copyright 2021 talsu <talsu84@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/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x4B4D   // KM
+#define PRODUCT_ID 0x4143  // AC
+#define DEVICE_VER 0x0104
+#define MANUFACTURER KBDMania
+#define PRODUCT KMAC PAD
+
+/* key matrix size */
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 4
+
+/*
+ * Keyboard Matrix Assignments
+ * The KMAC uses demultiplexers for the cols, they are only included here as documentation.
+ * See matrix.c for more details.
+ */
+#define MATRIX_ROW_PINS { E2, D0, D1, D2, D3, D5 }
+#define MATRIX_COL_PINS { C7, C6, B6, B5 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+// #define DIODE_DIRECTION COL2ROW
+
+// #define LED_CAPS_LOCK_PIN B0
+// #define LED_SCROLL_LOCK_PIN E6
+// #define LED_PIN_ON_STATE 0
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
diff --git a/keyboards/kmac_pad/info.json b/keyboards/kmac_pad/info.json
new file mode 100644
index 0000000000..6a17b3d452
--- /dev/null
+++ b/keyboards/kmac_pad/info.json
@@ -0,0 +1,35 @@
+{
+  "keyboard_name": "KMAC PAD",
+  "maintainer": "talsu",
+  "width": 4,
+  "height": 6.5,
+  "layouts": {
+    "LAYOUT": {
+      "layout": [
+        {"label":"K00", "x":3, "y":0},
+
+        {"label":"K10", "x":0, "y":1.25},
+        {"label":"K11", "x":1, "y":1.25},
+        {"label":"K12", "x":2, "y":1.25},
+        {"label":"K13", "x":3, "y":1.25},
+
+        {"label":"K20", "x":0, "y":2.25},
+        {"label":"K21", "x":1, "y":2.25},
+        {"label":"K22", "x":2, "y":2.25},
+        {"label":"K23", "x":3, "y":2.25, "h":2},
+
+        {"label":"K30", "x":0, "y":3.25},
+        {"label":"K31", "x":1, "y":3.25},
+        {"label":"K32", "x":2, "y":3.25},
+
+        {"label":"K40", "x":0, "y":4.25},
+        {"label":"K41", "x":1, "y":4.25},
+        {"label":"K42", "x":2, "y":4.25},
+        {"label":"K43", "x":3, "y":4.25, "h":2},
+
+        {"label":"K50", "x":0, "y":5.25, "w":2},
+        {"label":"K52", "x":2, "y":5.25}
+      ]
+    }
+  }
+}
diff --git a/keyboards/kmac_pad/keymaps/default/keymap.c b/keyboards/kmac_pad/keymaps/default/keymap.c
new file mode 100644
index 0000000000..b9b9f823fb
--- /dev/null
+++ b/keyboards/kmac_pad/keymaps/default/keymap.c
@@ -0,0 +1,143 @@
+/*
+Copyright 2021 talsu <talsu84@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 QMK_KEYBOARD_H
+
+enum kmac_pad_keycodes {
+    MD_BOOT = SAFE_RANGE,
+    MCR1,
+    MCR2,
+    MCR3,
+    MCR4,
+    MCR5,
+    MCR6,
+    MCR7,
+    MCR8,
+    MCR9,
+    MCR10,
+    MCR11,
+    MCR12
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT( /* Base */
+                               TG(1),
+    KC_NLCK, KC_PSLS, KC_PAST, KC_PMNS,
+    KC_P7,   KC_P8,   KC_P9,   KC_PPLS,
+    KC_P4,   KC_P5,   KC_P6,
+    KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+    KC_P0,            KC_PDOT          ),
+    [1] = LAYOUT( /* FN  */
+                               KC_TRNS,
+    MCR1,    MCR2,    MCR3,    KC_TRNS,
+    MCR4,    MCR5,    MCR6,    KC_TRNS,
+    MCR7,    MCR8,    MCR9,
+    MCR10,   MCR11,   MCR12,   KC_TRNS,
+    KC_TRNS,          MD_BOOT          )
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+
+    switch (keycode) {
+        case MD_BOOT:
+        {
+            static uint32_t key_timer;
+            if (record->event.pressed) {
+                key_timer = timer_read32();
+            } else {
+                if (timer_elapsed32(key_timer) >= 2000) {
+                    reset_keyboard();
+                }
+            }
+            return false;
+        }
+        case MCR1:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 1");
+            }
+            return false;
+        case MCR2:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 2");
+            }
+            return false;
+        case MCR3:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 3");
+            }
+            return false;
+        case MCR4:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 4");
+            }
+            return false;
+        case MCR5:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 5");
+            }
+            return false;
+        case MCR6:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 6");
+            }
+            return false;
+        case MCR7:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 7");
+            }
+            return false;
+        case MCR8:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 8");
+            }
+            return false;
+        case MCR9:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 9");
+            }
+            return false;
+        case MCR10:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 10");
+            }
+            return false;
+        case MCR11:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 12");
+            }
+            return false;
+        case MCR12:
+            if (record->event.pressed) {
+                SEND_STRING("Macro 12");
+            }
+            return false;
+        default:
+            return true;
+    }
+
+}
+
+bool led_update_user(led_t led_state) {
+    writePin(B1, led_state.num_lock);
+    return false;
+}
+
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    writePin(B3, !IS_LAYER_ON_STATE(state, 0));
+    return state;
+}
diff --git a/keyboards/kmac_pad/keymaps/default/readme.md b/keyboards/kmac_pad/keymaps/default/readme.md
new file mode 100644
index 0000000000..3b9b739a2a
--- /dev/null
+++ b/keyboards/kmac_pad/keymaps/default/readme.md
@@ -0,0 +1,61 @@
+# The default keymap for KMAC PAD
+
+This is the default keymap. It implements the same features as the official default KMAC PAD firmware.
+
+## Layers
+
+The keymap has two layers. Press the 'FN' key to toggle the Default layer and Function layer.
+
+### Layer 1: Default Layer
+
+                ,---.
+                |TG1|
+                `---'
+    ,---------------.
+    |NUM| / | * | - |
+    |---------------|
+    | 7 | 8 | 9 |   |
+    |-----------| + |
+    | 4 | 5 | 6 |   |
+    |---------------|
+    | 1 | 2 | 3 |   |
+    |-----------|Ent|
+    |   0   | . |   |
+    '---------------'
+
+### Layer 2: Function Layer
+
+                ,---.
+                |TG1|
+                `---'
+    ,---------------.
+    |M1 |M2 |M3 |   |
+    |---------------|
+    |M4 |M5 |M6 |   |
+    |-----------|   |
+    |M7 |M8 |M9 |   |
+    |---------------|
+    |M10|M11|M12|   |
+    |-----------|   |
+    |       |   |   |
+    '---------------'
+
+## Macros
+
+The default macro is typed with meaningless strings that exist as samples.
+
+
+| Macro | Action                                 |
+|:-----:| -------------------------------------- |
+| 1     | Types `Macro 1`                        |
+| 2     | Types `Macro 2`                        |
+| 3     | Types `Macro 3`                        |
+| 4     | Types `Macro 4`                        |
+| 5     | Types `Macro 5`                        |
+| 6     | Types `Macro 6`                        |
+| 7     | Types `Macro 7`                        |
+| 8     | Types `Macro 8`                        |
+| 9     | Types `Macro 9`                        |
+| 10    | Types `Macro 10`                       |
+| 11    | Types `Macro 11`                       |
+| 12    | Types `Macro 12`                       |
diff --git a/keyboards/kmac_pad/kmac_pad.c b/keyboards/kmac_pad/kmac_pad.c
new file mode 100644
index 0000000000..87083668cc
--- /dev/null
+++ b/keyboards/kmac_pad/kmac_pad.c
@@ -0,0 +1,29 @@
+/*
+Copyright 2021 talsu <talsu84@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 "kmac_pad.h"
+
+void keyboard_pre_init_kb(void) {
+
+    /* Set Backlight pin as output
+     * FN Pin PB3
+     * PAD Pin PB1
+     */
+    setPinOutput(B3);
+    setPinOutput(B1);
+    keyboard_pre_init_user();
+}
diff --git a/keyboards/kmac_pad/kmac_pad.h b/keyboards/kmac_pad/kmac_pad.h
new file mode 100644
index 0000000000..9979608339
--- /dev/null
+++ b/keyboards/kmac_pad/kmac_pad.h
@@ -0,0 +1,37 @@
+/*
+Copyright 2021 talsu <talsu84@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/>.
+*/
+
+#pragma once
+
+#include "quantum.h"
+
+#define LAYOUT( \
+                   K00, \
+    K10, K11, K12, K13, \
+    K20, K21, K22, K23, \
+    K30, K31, K32,      \
+    K40, K41, K42, K43, \
+    K50,      K52       \
+) \
+{ \
+    { K00, KC_NO, KC_NO, KC_NO }, \
+    { K10, K11,   K12,   K13   }, \
+    { K20, K21,   K22,   K23   }, \
+    { K30, K31,   K32,   KC_NO }, \
+    { K40, K41,   K42,   K43   }, \
+    { K50, KC_NO, K52,   KC_NO }  \
+}
diff --git a/keyboards/kmac_pad/matrix.c b/keyboards/kmac_pad/matrix.c
new file mode 100644
index 0000000000..476e40f514
--- /dev/null
+++ b/keyboards/kmac_pad/matrix.c
@@ -0,0 +1,111 @@
+/*
+Copyright 2021 talsu <talsu84@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 "wait.h"
+#include "matrix.h"
+#include "quantum.h"
+
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+/* Columns 0 - 3
+ * col / pin:
+ * 0: C7
+ * 1: C6
+ * 2: B6
+ * 3: B5
+ */
+static void unselect_cols(void) {
+    for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+        setPinOutput(col_pins[col]);
+        writePinLow(col_pins[col]);
+    }
+}
+
+static void select_col(uint8_t col) {
+    writePinHigh(col_pins[col]);
+}
+
+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);
+
+    // row:0 , col:0 FN key is DIRECT_PIN
+    if (current_col == 0) {
+
+        matrix_row_t last_row_value = current_matrix[0];
+        if (readPin(row_pins[0]) == 0) {
+            // Pin LO, set col bit
+            current_matrix[0] |= (1 << current_col);
+        } else {
+            // Pin HI, clear col bit
+            current_matrix[0] &= ~(1 << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[0]) && !(matrix_changed)) {
+            matrix_changed = true;
+        }
+    }
+
+    // other row use MATRIX
+    for (uint8_t row_index = 1; row_index < MATRIX_ROWS; row_index++) {
+
+        matrix_row_t last_row_value = current_matrix[row_index];
+        if (readPin(row_pins[row_index]) == 0) {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(1 << current_col);
+        } else {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (1 << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
+            matrix_changed = true;
+        }
+    }
+
+
+    // Unselect cols
+    unselect_cols();
+
+    return matrix_changed;
+}
+
+void matrix_init_custom(void) {
+    // initialize hardware and global matrix state here
+    unselect_cols();
+
+    // initialize key pins
+    for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
+        setPinInputHigh(row_pins[row_index]);
+    }
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    bool changed = false;
+
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+        changed |= read_rows_on_col(current_matrix, current_col);
+    }
+
+    return changed;
+}
diff --git a/keyboards/kmac_pad/readme.md b/keyboards/kmac_pad/readme.md
new file mode 100644
index 0000000000..7605501f3a
--- /dev/null
+++ b/keyboards/kmac_pad/readme.md
@@ -0,0 +1,56 @@
+# KMAC PAD
+
+![kmac_pad](https://i.imgur.com/4P1ybgNl.jpg)
+
+KMAC PAD is a num pad keyboard.
+It can be used independently, but can also be used by connecting with KMAC keyboard case.
+
+* Keyboard Maintainer: [talsu](https://github.com/talsu)
+* Hardware Supported: KMAC PAD
+* Hardware Availability: http://www.kbdmania.net/xe/news/5232321
+
+Make example for this keyboard (after setting up your build environment):
+
+    make kmac_pad:default
+    
+Flashing example for this keyboard:
+
+    make kmac_pad:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+The PCB is hardwired to run the bootloader if the key at the `FN` position (the only key in first row) is held down when connecting the keyboard.
+
+## PCB
+
+![Imgur](https://i.imgur.com/ML66cvfl.jpg)
+![Imgur](https://i.imgur.com/Kr2Wdtkl.jpg)
+
+### Switch Pins
+
+The FN key in the `Row 0` is directly connected to the E2 pin.   
+The rest of the rows below that use MATRIX. (`Row 1 ~ Row 5`)
+| Row   | Pin                    |
+|:-----:| ---------------------- |
+| 0     | x (Not in Matrix)      |
+| 1     | D0                     |
+| 2     | D1                     |
+| 3     | D2                     |
+| 4     | D3                     |
+| 5     | D5                     |
+
+| Column | Pin                   |
+|:------:| --------------------- |
+| 0      | C7                    |
+| 1      | C6                    |
+| 2      | B6                    |
+| 3      | B5                    |
+
+### Backlight Pins
+
+There are 2 pins for backlight.
+
+The LED of the FN key uses pin `B3`.
+All other keys are connected to the `B1` pin.
diff --git a/keyboards/kmac_pad/rules.mk b/keyboards/kmac_pad/rules.mk
new file mode 100644
index 0000000000..3f63076c41
--- /dev/null
+++ b/keyboards/kmac_pad/rules.mk
@@ -0,0 +1,29 @@
+# MCU name
+MCU = atmega32u4
+
+# Processor frequency
+F_CPU = 8000000
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = full     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+CUSTOM_MATRIX = lite        # Custom matrix file
+
+# Project specific files
+SRC += matrix.c