[Keyboard] keebwerk. nano. slider support (#7914)

* Initial Keeb.werk nano.slider support

* fixed open ifdef

* Fixed layout macros

* Added LTO

* Enabled LTO and dissabled console

* Added basic slider example

* rate limited adc, and fixed send_string

* Made slider courser

* new-line after each slider print

* Switched slider example mirror the stock behavior using midi

* switched division to bit-shifting

* Apply suggestions from code review

* Update keyboards/keebwerk/nano_slider/keymaps/default/keymap.c

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/config.h

* Applied suggestions from code review

* Apply suggestions from code review

* Added fauxparks info.json

* Reverse midi value direction, move to QMKVID

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/keymaps/default/keymap.c

* Apply suggestions from code review

* Update keyboards/keebwerk/nano_slider/rules.mk

* Update keyboards/keebwerk/nano_slider/nano_slider.h

* Update keyboards/keebwerk/nano_slider/readme.md

* Defined backlight pin and settings

8 files changed, 429 insertions, 0 deletions

diff --git a/keyboards/keebwerk/nano_slider/config.h b/keyboards/keebwerk/nano_slider/config.h
new file mode 100644
index 000000000..ba079c531
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/config.h
@@ -0,0 +1,221 @@
+/*
+Copyright 2020 Duckle
+
+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 0x03A8
+#define PRODUCT_ID 0x0000
+#define DEVICE_VER 0x0001
+#define MANUFACTURER keebwerk.
+#define PRODUCT nano. slider
+#define DESCRIPTION A small eight key macropad
+
+/* key matrix size */
+#define MATRIX_ROWS 2
+#define MATRIX_COLS 4
+
+/*
+ * Keyboard Matrix Assignments
+ */
+#define MATRIX_ROW_PINS { F0, F1 }
+#define MATRIX_COL_PINS { B0, B1, B2, B3 }
+#define UNUSED_PINS
+
+#define SLIDER_PIN D4
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+#define BACKLIGHT_PIN B7
+#define BACKLIGHT_BREATHING
+#define BACKLIGHT_LEVELS 3
+
+#define RGB_DI_PIN F6
+#ifdef RGB_DI_PIN
+#    define RGBLED_NUM 4
+#    define RGBLIGHT_HUE_STEP 8
+#    define RGBLIGHT_SAT_STEP 8
+#    define RGBLIGHT_VAL_STEP 8
+#    define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+#    define RGBLIGHT_SLEEP         /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+                                   /*== all animations enable ==*/
+#    define RGBLIGHT_ANIMATIONS
+// /*== or choose animations ==*/
+//   #define RGBLIGHT_EFFECT_BREATHING
+//   #define RGBLIGHT_EFFECT_RAINBOW_MOOD
+//   #define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//   #define RGBLIGHT_EFFECT_SNAKE
+//   #define RGBLIGHT_EFFECT_KNIGHT
+//   #define RGBLIGHT_EFFECT_CHRISTMAS
+//   #define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//   #define RGBLIGHT_EFFECT_RGB_TEST
+//   #define RGBLIGHT_EFFECT_ALTERNATING
+// /*== customize breathing effect ==*/
+//   /*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//   #define RGBLIGHT_BREATHE_TABLE_SIZE 256      // 256(default) or 128 or 64
+//   /*==== use exp() and sin() ====*/
+//   #define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85  // 1 to 2.7
+//   #define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
+#endif
+
+/* 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
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+/* defined by default; to change, uncomment and set to the combination you want */
+// #define IS_COMMAND() (get_mods() == MOD_MASK_SHIFT)
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP           H
+//#define MAGIC_KEY_HELP_ALT       SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER0_ALT     GRAVE
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     B
+//#define MAGIC_KEY_BOOTLOADER_ALT ESC
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_EEPROM_CLEAR   BSPACE
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
+/*
+ * 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
+
+/* disable these deprecated features by default */
+#ifndef LINK_TIME_OPTIMIZATION_ENABLE
+#    define NO_ACTION_MACRO
+#    define NO_ACTION_FUNCTION
+#endif
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 1
+
+/*
+ * HD44780 LCD Display Configuration
+ */
+/*
+#define LCD_LINES           2     //< number of visible lines of the display
+#define LCD_DISP_LENGTH    16     //< visibles characters per line of the display
+
+#define LCD_IO_MODE      1            //< 0: memory mapped mode, 1: IO port mode
+
+#if LCD_IO_MODE
+#define LCD_PORT         PORTB        //< port for the LCD lines
+#define LCD_DATA0_PORT   LCD_PORT     //< port for 4bit data bit 0
+#define LCD_DATA1_PORT   LCD_PORT     //< port for 4bit data bit 1
+#define LCD_DATA2_PORT   LCD_PORT     //< port for 4bit data bit 2
+#define LCD_DATA3_PORT   LCD_PORT     //< port for 4bit data bit 3
+#define LCD_DATA0_PIN    4            //< pin for 4bit data bit 0
+#define LCD_DATA1_PIN    5            //< pin for 4bit data bit 1
+#define LCD_DATA2_PIN    6            //< pin for 4bit data bit 2
+#define LCD_DATA3_PIN    7            //< pin for 4bit data bit 3
+#define LCD_RS_PORT      LCD_PORT     //< port for RS line
+#define LCD_RS_PIN       3            //< pin  for RS line
+#define LCD_RW_PORT      LCD_PORT     //< port for RW line
+#define LCD_RW_PIN       2            //< pin  for RW line
+#define LCD_E_PORT       LCD_PORT     //< port for Enable line
+#define LCD_E_PIN        1            //< pin  for Enable line
+#endif
+*/
+
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/keebwerk/nano_slider/info.json b/keyboards/keebwerk/nano_slider/info.json
new file mode 100644
index 000000000..f6a9e9a02
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/info.json
@@ -0,0 +1,21 @@
+{
+    "keyboard_name": "nano. slider",
+    "url": "",
+    "maintainer": "qmk",
+    "width": 4,
+    "height": 3.25,
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"x":0, "y":0},
+                {"x":0, "y":1.25},
+                {"x":1, "y":1.25},
+                {"x":2, "y":1.25},
+                {"x":0, "y":2.25},
+                {"x":1, "y":2.25},
+                {"x":2, "y":2.25},
+                {"x":3, "y":1.25, "h":2}
+            ]
+        }
+    }
+}
diff --git a/keyboards/keebwerk/nano_slider/keymaps/default/keymap.c b/keyboards/keebwerk/nano_slider/keymaps/default/keymap.c
new file mode 100644
index 000000000..85f2d55ec
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/keymaps/default/keymap.c
@@ -0,0 +1,86 @@
+/* Copyright 2020 Duckle
+ *
+ * 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
+#include "analog.h"
+#include "qmk_midi.h"
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _BASE,
+    _FN,
+    _DEMO
+};
+
+// Defines the keycodes used by our macros in process_record_user
+enum custom_keycodes {
+    QMKBEST = SAFE_RANGE,
+    QMKURL
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [_BASE] = LAYOUT(
+        TO(_FN),
+        KC_1,    KC_2,    KC_3,
+        KC_4,    KC_5,    KC_6,    KC_0
+    ),
+    [_FN] = LAYOUT(
+        TO(_DEMO),
+        RGB_TOG, RGB_MOD, RGB_VAI,
+        _______, _______, _______, _______
+    ),
+    [_DEMO] = LAYOUT(
+        TO(_BASE),
+        QMKBEST, _______, _______,
+        _______, _______, _______, QMKURL
+    )
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case QMKBEST:
+            if (record->event.pressed) {
+                // when keycode QMKBEST is pressed
+                SEND_STRING("QMK is the best thing ever!");
+            } else {
+                // when keycode QMKBEST is released
+            }
+            break;
+        case QMKURL:
+            if (record->event.pressed) {
+                // when keycode QMKURL is pressed
+                SEND_STRING("https://qmk.fm/\n");
+            } else {
+                // when keycode QMKURL is released
+            }
+            break;
+    }
+    return true;
+}
+
+uint8_t divisor = 0;
+
+void slider(void) {
+    if (divisor++) { // only run the slider function 1/256 times it's called
+        return;
+    }
+
+    midi_send_cc(&midi_device, 2, 0x3E, 0x7F - (analogReadPin(SLIDER_PIN) >> 3));
+}
+
+void matrix_scan_user(void) {
+    slider();
+}
diff --git a/keyboards/keebwerk/nano_slider/keymaps/default/readme.md b/keyboards/keebwerk/nano_slider/keymaps/default/readme.md
new file mode 100644
index 000000000..55a880555
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for nano_slider
diff --git a/keyboards/keebwerk/nano_slider/nano_slider.c b/keyboards/keebwerk/nano_slider/nano_slider.c
new file mode 100644
index 000000000..f5730779a
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/nano_slider.c
@@ -0,0 +1,18 @@
+/* Copyright 2020 Duckle
+ *
+ * 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 "nano_slider.h"
+
diff --git a/keyboards/keebwerk/nano_slider/nano_slider.h b/keyboards/keebwerk/nano_slider/nano_slider.h
new file mode 100644
index 000000000..31985130b
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/nano_slider.h
@@ -0,0 +1,36 @@
+/* Copyright 2020 Duckle
+ *
+ * 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"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+    K11, \
+    K12, K10, K00, \
+    K01, K02, K03, K13  \
+) { \
+    { K00,   K01,   K02,   K03 }, \
+    { K10,   K11,   K12,   K13 }  \
+}
diff --git a/keyboards/keebwerk/nano_slider/readme.md b/keyboards/keebwerk/nano_slider/readme.md
new file mode 100644
index 000000000..84654f537
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/readme.md
@@ -0,0 +1,15 @@
+# nano. slider
+
+![nano. slider](https://i.imgur.com/0UxyfxL.png)
+
+A small eight key macropad with slider.
+
+* Keyboard Maintainer: [Duckle29](https://github.com/Duckle29)
+* Hardware Supported: nano. slider PCB, ATmega32U4
+* Hardware Availability: [keebwerk.](https://www.keebwerk.com/product/nano-slider-keyboard/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make keebwerk/nano_slider: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/keebwerk/nano_slider/rules.mk b/keyboards/keebwerk/nano_slider/rules.mk
new file mode 100644
index 000000000..3e1d8fe62
--- /dev/null
+++ b/keyboards/keebwerk/nano_slider/rules.mk
@@ -0,0 +1,31 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu
+
+# Build Options
+BOOTMAGIC_ENABLE = lite     # 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 = yes       # Enable keyboard RGB underglow
+MIDI_ENABLE = yes           # MIDI support
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6
+LTO_ENABLE = yes
+
+SRC += analog.c