add handwired/swiftrax/retropad (#10331)

* add retropad

* fix indicator leds

* fix bootmagic

* fix led indicators

* fix keymap

* fix keymap

* fix keymap

* fix keymap

* fix license headers

* Apply suggestions from code review

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

* Apply suggestions from code review

Co-authored-by: Ryan <fauxpark@gmail.com>

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

9 files changed, 298 insertions, 0 deletions

diff --git a/keyboards/handwired/swiftrax/retropad/config.h b/keyboards/handwired/swiftrax/retropad/config.h
new file mode 100644
index 000000000..e604eda41
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/config.h
@@ -0,0 +1,64 @@
+/*
+Copyright 2020 Swiftrax <swiftrax@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       0x04D8
+#define PRODUCT_ID      0xEB0C
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Swiftrax
+#define PRODUCT         Retropad
+
+/* key matrix size */
+#define MATRIX_ROWS 3
+#define MATRIX_COLS 2
+
+// ROWS: Top to bottom, COLS: Left to right
+
+#define MATRIX_ROW_PINS { C7, C6, B5 }
+#define MATRIX_COL_PINS { B4, D2 }
+
+#define ENCODERS_PAD_A { D0 }
+#define ENCODERS_PAD_B { D1 }
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+#define RGB_DI_PIN B7
+#ifdef  RGB_DI_PIN
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 6
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+#endif
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+/*EEPROM for via*/
+#define DYNAMIC_KEYMAP_LAYER_COUNT 3
+
+/* bootmagic row col assignment */
+#define BOOTMAGIC_LITE_ROW 1
+#define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/handwired/swiftrax/retropad/info.json b/keyboards/handwired/swiftrax/retropad/info.json
new file mode 100644
index 000000000..9637c7b3f
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/info.json
@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "Retropad", 
+    "url": "https://github.com/swiftrax", 
+    "maintainer": "swiftrax", 
+    "width": 2, 
+    "height": 3.5, 
+    "layouts": {
+        "LAYOUT": {
+            "layout": [{"label":"0,1", "x":0.5, "y":0}, {"label":"1,0", "x":0, "y":1.5}, {"label":"1,1", "x":1, "y":1.5}, {"label":"2,0", "x":0, "y":2.5}, {"label":"2,1", "x":1, "y":2.5}]
+        }
+    }
+}
\ No newline at end of file
diff --git a/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c b/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c
new file mode 100644
index 000000000..8b9992e1d
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c
@@ -0,0 +1,69 @@
+  /* Copyright 2020 swiftrax
+ *
+ * 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
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[0] = LAYOUT(
+  TO(1), //windows
+  KC_MSTP, KC_MPLY,
+  KC_MPRV, KC_MNXT),
+
+[1] = LAYOUT( //macOS
+  TO(2),
+  KC_MSTP, KC_MPLY,
+  KC_MRWD, KC_MFFD),
+
+[2] = LAYOUT(
+  TO(0),
+  KC_HOME, KC_PGUP,
+  KC_END,  KC_PGDN),
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+  if(IS_LAYER_ON(2)){
+    if (clockwise)
+      tap_code(KC_LEFT);
+    else 
+      tap_code(KC_RGHT);
+  }
+  else{
+    if(clockwise)
+      tap_code(KC_VOLU);
+    else
+      tap_code(KC_VOLD);
+  }
+}
+
+void matrix_init_user(void) {
+  // set top LED to output and off (active low)
+  setPinOutput(D5);
+  writePinHigh(D5);
+  // set middle LED to output and off (active low)
+  setPinOutput(D4);
+  writePinHigh(D4);
+  // set bottom LED to output and off (active low)
+  setPinOutput(D3);
+  writePinHigh(D3);
+}
+
+// write to above indicators in a binary fashion based on current layer
+layer_state_t layer_state_set_user(layer_state_t state) {
+    writePin(D5, get_highest_layer(state));
+    writePin(D4, !layer_state_cmp(state, 1));
+    writePin(D3, !layer_state_cmp(state, 2));
+    return state;
+}
\ No newline at end of file
diff --git a/keyboards/handwired/swiftrax/retropad/keymaps/via/keymap.c b/keyboards/handwired/swiftrax/retropad/keymaps/via/keymap.c
new file mode 100644
index 000000000..8b9992e1d
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/keymaps/via/keymap.c
@@ -0,0 +1,69 @@
+  /* Copyright 2020 swiftrax
+ *
+ * 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
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[0] = LAYOUT(
+  TO(1), //windows
+  KC_MSTP, KC_MPLY,
+  KC_MPRV, KC_MNXT),
+
+[1] = LAYOUT( //macOS
+  TO(2),
+  KC_MSTP, KC_MPLY,
+  KC_MRWD, KC_MFFD),
+
+[2] = LAYOUT(
+  TO(0),
+  KC_HOME, KC_PGUP,
+  KC_END,  KC_PGDN),
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+  if(IS_LAYER_ON(2)){
+    if (clockwise)
+      tap_code(KC_LEFT);
+    else 
+      tap_code(KC_RGHT);
+  }
+  else{
+    if(clockwise)
+      tap_code(KC_VOLU);
+    else
+      tap_code(KC_VOLD);
+  }
+}
+
+void matrix_init_user(void) {
+  // set top LED to output and off (active low)
+  setPinOutput(D5);
+  writePinHigh(D5);
+  // set middle LED to output and off (active low)
+  setPinOutput(D4);
+  writePinHigh(D4);
+  // set bottom LED to output and off (active low)
+  setPinOutput(D3);
+  writePinHigh(D3);
+}
+
+// write to above indicators in a binary fashion based on current layer
+layer_state_t layer_state_set_user(layer_state_t state) {
+    writePin(D5, get_highest_layer(state));
+    writePin(D4, !layer_state_cmp(state, 1));
+    writePin(D3, !layer_state_cmp(state, 2));
+    return state;
+}
\ No newline at end of file
diff --git a/keyboards/handwired/swiftrax/retropad/keymaps/via/rules.mk b/keyboards/handwired/swiftrax/retropad/keymaps/via/rules.mk
new file mode 100644
index 000000000..036bd6d1c
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/handwired/swiftrax/retropad/readme.md b/keyboards/handwired/swiftrax/retropad/readme.md
new file mode 100644
index 000000000..5dd2e2dff
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/readme.md
@@ -0,0 +1,13 @@
+# Retropad
+
+2x2 macro pad with a rotary encoder
+
+* Keyboard Maintainer: Swiftrax
+* Hardware Supported: Retropad PCB
+* Hardware Availability: https://github.com/swiftrax
+
+Make example for this keyboard (after setting up your build environment):
+
+    make handwired/swiftrax/retropad:default
+
+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).
diff --git a/keyboards/handwired/swiftrax/retropad/retropad.c b/keyboards/handwired/swiftrax/retropad/retropad.c
new file mode 100644
index 000000000..3ffe29528
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/retropad.c
@@ -0,0 +1,16 @@
+/* Copyright 2020 swiftrax
+ *
+ * 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 "retropad.h"
\ No newline at end of file
diff --git a/keyboards/handwired/swiftrax/retropad/retropad.h b/keyboards/handwired/swiftrax/retropad/retropad.h
new file mode 100644
index 000000000..e7527d5c0
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/retropad.h
@@ -0,0 +1,31 @@
+/* Copyright 2020 swiftrax
+ *
+ * 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"
+
+// readability
+#define XXX KC_NO
+
+#define LAYOUT( \
+       K001,    \
+    K100, K101, \
+    K200, K201  \
+) { \
+    {  XXX,  K001, }, \
+    { K100,  K101, }, \
+    { K200,  K201, }  \
+}
diff --git a/keyboards/handwired/swiftrax/retropad/rules.mk b/keyboards/handwired/swiftrax/retropad/rules.mk
new file mode 100644
index 000000000..8771c701d
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/rules.mk
@@ -0,0 +1,23 @@
+# MCU name
+MCU = atmega32u2
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # 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 = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes