keychron_qmk_firmware/keyboard/planck

Planck keyboard firmware

DIY/Assembled compact ortholinear 40% keyboard by Ortholinear Keyboards.

Quantum MK Firmware

You have access to a bunch of goodies! Check out the Makefile to enable/disable some of the features. Uncomment the # to enable them. Setting them to no does nothing and will only confuse future you.

BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality
MIDI_ENABLE = yes      # MIDI controls
# UNICODE_ENABLE = yes # Unicode support
BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID

Mod shortcuts

• LSFT(kc) - applies left shift to kc - S(kc) is an alias
• RSFT(kc) - applies right shift to kc
• LCTL(kc) - applies left control to kc
• RCTL(kc) - applies right control to kc
• LALT(kc) - applies left alt to kc
• RALT(kc) - applies right alt to kc
• LGUI(kc) - applies left gui (command/win) to kc
• RGUI(kc) - applies right gui (command/win) to kc

You can also use more than one, like this:

LALT(LGUI(KC_ESC))

The following shortcuts automatically add LSFT() to keycodes to get commonly used symbols. Their long names (see quantum/keymap_common.h) are also availble.

KC_TILD  ~
KC_EXLM  !
KC_AT    @
KC_HASH  #
KC_DLR   $
KC_PERC  %
KC_CIRC  ^
KC_AMPR  &
KC_ASTR  *
KC_LPRN  (
KC_RPRN  )
KC_UNDS  _
KC_PLUS  +
KC_LCBR  {
KC_RCBR  }
KC_PIPE  |
KC_COLN  :

Function shortcuts

Instead of using FNx, you can use F(x) - the benefit here is being able to use more than 32 function layers (up to 4096), if you happen to need them.

There are also keycode shortcuts for common actions:

• MO(layer) - momentary switch to layer
• DF(layer) - sets default layer to layer
• TG(layer) - toggle between the current layer and layer
• MT(mod, kc) - is mod when held, and kc when tapped
  • CTL_T(kc) - is LCTL when held and kc when tapped
  • SFT_T(kc) - is LSFT when held and kc when tapped
  • ALT_T(kc) - is LALT when held and kc when tapped
  • GUI_T(kc) - is LGUI when held and kc when tapped
  • ALL_T(kc) - is Hyper (all mods) when held and kc when tapped
• LT(layer, kc) - momentary switch to layer when held, and kc when tapped

These functions work the same way that their ACTION_* functions do, and will require KC_TRNS on the layer being switched to - check out the default keymap for an example.

Additional keycodes for software-implemented layouts (Colemak, Dvorak, etc)

Everything is assuming you're in Qwerty (in software) by default, but there is built-in support for using a Colemak or Dvorak layout by including this at the top of your keymap:

 #include "keymap_<layout>.h"

Where is "colemak" or "dvorak". After including this line, you will get access to:

• CM_* for all of the Colemak-equivalent characters
• DV_* for all of the Dvorak-equivalent characters

These implementations assume you're using Colemak or Dvorak on your OS, not on your keyboard - this is referred to as a software-implemented layout. If your computer is in Qwerty and your keymap is in Colemak or Dvorak, this is referred to as a firmware-implemented layout, and you won't need these features.

To give an example, if you're using software-implemented Colemak, and want to get an F, you would use CM_F - KC_F under these same circumstances would result in T.

Additional language support

In quantum/keymap_extras/, you'll see various language files - these work the same way as the alternative layout ones do. Most are defined by their two letter country/language code followed by an underscore and a 4-letter abbrivation of its name. FR_UGRV which will result in a ù when using a software-implemented AZERTY layout. It's currently difficult to send such characters in just the firmware (but it's being worked on - see Unicode support).

Unicode support

You can currently send 4 hex digits with your OS-specific modifier key (RALT for OSX with the "Unicode Hex Input" layout) - this is currently limited to supporting one OS at a time, and requires a recompile for switching. 8 digit hex codes are being worked on. The keycode function is UC(n), where n is a 4 digit hexidecimal. Enable from the Makefile.

Macro shortcuts

Instead of using the ACTION_MACRO function, you can simply use M(n) to access macro n - n will get passed into the action_get_macro as the id, and you can use a switch statement to filter them. This gets called on the keydown and keyup, so you'll need to use an if statement testing record->event.pressed (see keymap_default.c).

Other keyboard shortcut keycodes

• RESET - puts the MCU in DFU mode for flashing new firmware (with make dfu)
• DEBUG - the firmware into debug mode - you'll need hid_listen to see things
• BL_ON - turns the backlight on
• BL_OFF - turns the backlight off
• BL_<n> - sets the backlight to level n
• BL_INC - increments the backlight level by one
• BL_DEC - decrements the backlight level by one
• BL_TOGG - toggles the backlight
• BL_STEP - steps through the backlight levels

Enable the backlight from the Makefile.

MIDI functionalty

This is still a WIP, but check out quantum/keymap_midi.c to see what's happening. Enable from the Makefile.

Bluetooth functionality

This requires some hardware changes, but can be enabled via the Makefile. The firmware will still output characters via USB, so be aware of this when charging via a computer. It would make sense to have a switch on the Bluefruit to turn it off at will.

Building

Download or clone the whole firmware and navigate to the keyboard/planck folder. Once your dev env is setup, you'll be able to type make to generate your .hex - you can then use make dfu to program your PCB once you hit the reset button.

Depending on which keymap you would like to use, you will have to compile slightly differently.

Default

To build with the default keymap, simply run make.

Other Keymaps

Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named keymap_<name>.c and see keymap document (you can find in top README.md) and existent keymap files.

To build the firmware binary hex file with a keymap just do make with KEYMAP option like:

$ make KEYMAP=[default|jack|<name>]

Keymaps follow the format keymap_<name>.c and are stored in the keymaps folder.

Notable forks (which some of the keymap files are from)

• Shane's Fork
• Pierre's Fork
• Nathan's Fork
• Matthew's Fork