Jotpad16

keyboards/handwired/jotpad16/config.h

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+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Jotix
+#define PRODUCT         JotPad16
+#define DESCRIPTION     A Jotantastic compact NumPad
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 4
+
+/* pro_micro pin-out */
+#define MATRIX_ROW_PINS { B6, B2, D2, D3 }
+#define MATRIX_COL_PINS { B5, B4, B3, B1 }
+#define UNUSED_PINS
+
+/* leds */
+#define QMK_LED E6
+#define BACKLIGHT_LEVELS 3
+#define BACKLIGHT_PIN D7
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 0
+
+/* 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
+

keyboards/handwired/jotpad16/jotpad16.c

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+#include "jotpad16.h"
+
+void matrix_init_kb(void) {
+
+	matrix_init_user();
+}

keyboards/handwired/jotpad16/jotpad16.h

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+#pragma once
+
+#include "quantum.h"
+
+// Used to create a keymap using only KC_ prefixed keys
+#define LAYOUT_jotpad16( \
+	k00, k01, k02, k03, \
+	k10, k11, k12, k13, \
+	k20, k21, k22, k23, \
+	k30, k31, k32, k33 \
+) \
+{ \
+	{ k00, k01, k02, k03 }, \
+	{ k10, k11, k12, k13 }, \
+	{ k20, k21, k22, k23 }, \
+	{ k30, k31, k32, k33 } \
+}
+

keyboards/handwired/jotpad16/keymaps/default/keymap.c

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+// This is the canonical layout file for the Quantum project. If you want to add another keyboard,
+// this is the style you want to emulate.
+
+#include QMK_KEYBOARD_H
+
+extern keymap_config_t keymap_config;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+
+#define _NUMPAD 0
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Numpad
+ * +-------+-------+-------+-------+
+ * |   7   |   8   |   9   |   -   |
+ * +-------+-------+-------+-------+
+ * |   4   |   5   |   6   |   +   |
+ * +-------+-------+-------+-------+
+ * |   1   |   2   |   3   | enter |
+ * +-------+-------+-------+-------+
+ * |   0   |   .   |   /   |   *   |
+ * +-------+-------+-------+-------+
+ */
+[_NUMPAD] = LAYOUT_jotpad16 ( 
+    KC_P7,  KC_P8,  KC_P9,  KC_MINS,
+    KC_P4,  KC_P5,  KC_P6,  KC_PLUS,
+    KC_P1,  KC_P2,  KC_P3,  KC_PENT,
+    KC_P0,  KC_PDOT,KC_PSLS,KC_ASTR 
+),
+};

keyboards/handwired/jotpad16/readme.md

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+# JotPad16
+
+![JotPad16](https://i.imgur.com/RwmqWuS.jpg)
+
+A ortholinear keypad (4x4) made by jotix.
+
+Keyboard Maintainer: [jotix](https://github.com/jotix)  
+Hardware Supported: Arduino Pro Micro  
+
+### Arduino Pro Micro Pinout
+
+| rows        | 0  | 1  | 2   | 3   |
+|-------------|----|----|-----|-----|
+| arduino pin | 10 | 16 | RXI | TX0 |
+| qmk pin     | B6 | B2 | D2  | D3  |
+
+| columns     | 0  | 1  | 2  | 3  |
+|-------------|----|----|----|----| 
+| arduino pin | 9  | 8  | 14 | 15 |
+| qmk pin     | B5 | B4 | B3 | C3 |
+
+|             | QMK led   | Backlight |
+|-------------|-----------|-----------|
+| Arduino pin | 7         | 6         |
+| qmk pin     | E6        | D7        |
+
+### Compiling the Firmware
+
+Make example for this keyboard (after setting up your build environment):
+
+    make handwired/jotpad16:default
+
+### The Defaukt Keymap
+
+![Default Keymap](https://i.imgur.com/VJZcFRN.jpg)
+
+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).
+
+

keyboards/handwired/jotpad16/rules.mk

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+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Bootloader
+#     This definition is optional, and if your keyboard supports multiple bootloaders of
+#     different sizes, comment this out, and the correct address will be loaded 
+#     automatically (+60). See bootloader.mk for all options.
+BOOTLOADER = caterina
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
+API_SYSEX_ENABLE = no
+
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+LAYOUTS = ortho_4x4