# Quantum Mechanical Keyboard Firmware

[![Build Status](https://travis-ci.org/jackhumbert/qmk_firmware.svg?branch=master)](https://travis-ci.org/jackhumbert/qmk_firmware)

This is a keyboard firmware based on the [tmk_keyboard firmware](http://github.com/tmk/tmk_keyboard) with some useful features for Atmel AVR controllers, and more specifically, the [OLKB product line](http://olkb.com), the [ErgoDox EZ](http://www.ergodox-ez.com) keyboard, and the [Clueboard product line](http://clueboard.co/).

## Official website

For an easy-to-read version of this document and the repository, check out [http://qmk.fm](http://qmk.fm). Nicely formatted keyboard and keymap listings are also available there, along with the ability to download .hex files instead of having to setup a build environment and compile them.

## Included Keyboards

* [Planck](/keyboards/planck/)
* [Preonic](/keyboards/preonic/)
* [Atomic](/keyboards/atomic/)
* [ErgoDox EZ](/keyboards/ergodox/ez/)
* [Clueboard](/keyboards/clueboard/)
* [Cluepad](/keyboards/cluepad/)

The project also includes community support for [lots of other keyboards](/keyboards/).

## Maintainers

QMK is developed and maintained by Jack Humbert of OLKB with contributions from the community, and of course, [Hasu](https://github.com/tmk). This repo used to be a fork of [TMK](https://github.com/tmk/tmk_keyboard), and we are incredibly grateful for his founding contributions to the firmware. We've had to break the fork due to purely technical reasons - it simply became too different over time, and we've had to start refactoring some of the basic bits and pieces. We are huge fans of TMK and Hasu :)

This documentation is edited and maintained by Erez Zukerman of ErgoDox EZ. If you spot any typos or inaccuracies, please [open an issue](https://github.com/jackhumbert/qmk_firmware/issues/new).

The OLKB product firmwares are maintained by [Jack Humbert](https://github.com/jackhumbert), the Ergodox EZ by [Erez Zukerman](https://github.com/ezuk), and the Clueboard by [Zach White](https://github.com/skullydazed).

## Documentation roadmap

This is not a tiny project. While this is the main readme, there are many other files you might want to consult. Here are some points of interest:

* The readme for your own keyboard: This is found under `keyboards/<your keyboards's name>/`. So for the ErgoDox EZ, it's [here](keyboards/ergodox/ez/); for the Planck, it's [here](keyboards/planck/) and so on.
* The list of possible keycodes you can use in your keymap is actually spread out in a few different places:
  * [doc/keycode.txt](doc/keycode.txt) - an explanation of those same keycodes.
  * [quantum/keymap.h](quantum/keymap.h) - this is where the QMK-specific aliases are all set up. Things like the Hyper and Meh key, the Leader key, and all of the other QMK innovations. These are also explained and documented below, but `keymap.h` is where they're actually defined.
* The [TMK documentation](doc/TMK_README.md). QMK is based on TMK, and this explains how it works internally.

# Getting started

Before you are able to compile, you'll need to install an environment for AVR development. You'll find the instructions for any OS below. If you find another/better way to set things up from scratch, please consider [making a pull request](https://github.com/jackhumbert/qmk_firmware/pulls) with your changes!

## Build Environment Setup

### Windows (Vista and later)
1. If you have ever installed WinAVR, uninstall it.
2. Install [MHV AVR Tools](https://infernoembedded.com/sites/default/files/project/MHV_AVR_Tools_20131101.exe). Disable smatch, but **be sure to leave the option to add the tools to the PATH checked**.
3. Install [MinGW](https://sourceforge.net/projects/mingw/files/Installer/mingw-get-setup.exe/download). During installation, uncheck the option to install a graphical user interface. **DO NOT change the default installation folder.** The scripts depend on the default location.
4. Clone this repository. [This link will download it as a zip file, which you'll need to extract.](https://github.com/jackhumbert/qmk_firmware/archive/master.zip) Open the extracted folder in Windows Explorer.
5. Double-click on the 1-setup-path-win batch script to run it. You'll need to accept a User Account Control prompt. Press the spacebar to dismiss the success message in the command prompt that pops up.
6. Right-click on the 2-setup-environment-win batch script, select "Run as administrator", and accept the User Account Control prompt. This part may take a couple of minutes, and you'll need to approve a driver installation, but once it finishes, your environment is complete!
7. Future build commands should be run from the MHV AVR Shell, which sets up an environment compatible with colorful build output. The standard Command Prompt will also work, but add `COLOR=false` to the end of all make commands when using it.

### Mac
If you're using [homebrew,](http://brew.sh/) you can use the following commands:

    brew tap osx-cross/avr
    brew install avr-libc
    brew install dfu-programmer

This is the recommended method. If you don't have homebrew, [install it!](http://brew.sh/) It's very much worth it for anyone who works in the command line.

You can also try these instructions:

1. Install Xcode from the App Store.
2. Install the Command Line Tools from `Xcode->Preferences->Downloads`.
3. Install [DFU-Programmer][dfu-prog].

### Linux
Install AVR GCC, AVR libc, and dfu-progammer with your favorite package manager.

Debian/Ubuntu example:

    sudo apt-get update
    sudo apt-get install gcc-avr avr-libc dfu-programmer

### Docker

If this is a bit complex for you, Docker might be the turn-key solution you need. After installing [Docker](https://www.docker.com/products/docker), run the following command at the root of the QMK folder to build a keyboard/keymap:

```bash
# You'll run this every time you want to build a keymap
# modify the keymap and keyboard assigment to compile what you want
# defaults are ergodox/default

docker run -e keymap=gwen -e keyboard=ergodox --rm -v $('pwd'):/qmk:rw edasque/qmk_firmware

```

This will compile the targetted keyboard/keymap and leave it in your QMK directory for you to flash.

### Vagrant
If you have any problems building the firmware, you can try using a tool called Vagrant. It will set up a virtual computer with a known configuration that's ready-to-go for firmware building. OLKB does NOT host the files for this virtual computer. Details on how to set up Vagrant are in the [VAGRANT_GUIDE file](doc/VAGRANT_GUIDE.md).

## Verify Your Installation
1. If you haven't already, obtain this repository ([https://github.com/jackhumbert/qmk_firmware](https://github.com/jackhumbert/qmk_firmware)). You can either download it as a zip file and extract it, or clone it using the command line tool git or the Github Desktop application.
2. Open up a terminal or command prompt and navigate to the `qmk_firmware` folder using the `cd` command. The command prompt will typically open to your home directory. If, for example, you cloned the repository to your Documents folder, then you would type `cd Documents/qmk_firmware`. If you extracted the file from a zip, then it may be named `qmk_firmware-master` instead.
3. To confirm that you're in the correct location, you can display the contents of your current folder using the `dir` command on Windows, or the `ls` command on Linux or Mac. You should see several files, including `readme.md` and a `quantum` folder. From here, you need to navigate to the appropriate folder under `keyboards/`. For example, if you're building for a Planck, run `cd keyboards/planck`.
4. Once you're in the correct keyboard-specific folder, run the `make` command. This should output a lot of information about the build process. More information about the `make` command can be found below.

# Customizing your keymap

In every keymap folder, the following files are recommended:

* `config.h` - the options to configure your keymap
* `keymap.c` - all of your keymap code, required
* `Makefile` - the features of QMK that are enabled, required to run `make` in your keymap folder
* `readme.md` - a description of your keymap, how others might use it, and explanations of features 

## The `make` command

The `make` command is how you compile the firmware into a .hex file, which can be loaded by a dfu programmer (like dfu-progammer via `make dfu`) or the [Teensy loader](https://www.pjrc.com/teensy/loader.html) (only used with Teensys). You can run `make` from the root (`/`), your keyboard folder (`/keyboards/<keyboard>/`), or your keymap folder (`/keyboards/<keyboard>/keymaps/<keymap>/`) if you have a `Makefile` there (see the example [here](/doc/keymap_makefile_example.mk)).

By default, this will generate a `<keyboard>_<keymap>.hex` file in whichever folder you run `make` from. These files are ignored by git, so don't worry about deleting them when committing/creating pull requests.

Below are some definitions that will be useful:

* The "root" (`/`) folder is the qmk_firmware folder, in which are `doc`, `keyboard`, `quantum`, etc.
* The "keyboard" folder is any keyboard project's folder, like `/keyboards/planck`.
* The "keymap" folder is any keymap's folder, like `/keyboards/planck/keymaps/default`.

Below is a list of the useful `make` commands in QMK:

* `make` - builds your keyboard and keymap depending on which folder you're in. This defaults to the "default" layout (unless in a keymap folder), and Planck keyboard in the root folder
  * `make keyboard=<keyboard>` - specifies the keyboard (only to be used in root)
  * `make keymap=<keymap>` - specifies the keymap (only to be used in root and keyboard folder - not needed when in keymap folder)
* `make clean` - cleans the `.build` folder, ensuring that everything is re-built
* `make dfu` - (requires dfu-programmer) builds and flashes the keymap to your keyboard once placed in reset/dfu mode (button or press `KC_RESET`). This does not work for Teensy-based keyboards like the ErgoDox EZ.
  * `keyboard=` and `keymap=` are compatible with this
* `make all-keyboards` - builds all keymaps for all keyboards and outputs status of each (use in root)
* `make all-keyboards-default` - builds all default keymaps for all keyboards and outputs status of each (use in root)
* `make all-keymaps [keyboard=<keyboard>]` - builds all of the keymaps for whatever keyboard folder you're in, or specified by `<keyboard>`
* `make all-keyboards-*`, `make all-keyboards-default-*` and `make all-keymaps-* [keyboard=<keyboard>]` - like the normal "make-all-*" commands, but the last string aftter the `-` (for example clean) is passed to the keyboard make command.
Other, less useful functionality:

* `make COLOR=false` - turns off color output
* `make SILENT=true` - turns off output besides errors/warnings
* `make VERBOSE=true` - outputs all of the avr-gcc stuff (not interesting)

## The `Makefile`

There are 3 different `make` and `Makefile` locations:

* root (`/`)
* keyboard (`/keyboards/<keyboard>/`)
* keymap (`/keyboards/<keyboard>/keymaps/<keymap>/`)

The root contains the code used to automatically figure out which keymap or keymaps to compile based on your current directory and commandline arguments. It's considered stable, and shouldn't be modified. The keyboard one will contain the MCU set-up and default settings for your keyboard, and shouldn't be modified unless you are the producer of that keyboard. The keymap Makefile can be modified by users, and is optional. It is included automatically if it exists. You can see an example [here](/doc/keymap_makefile_example.mk) - the last few lines are the most important. The settings you set here will override any defaults set in the keyboard Makefile. **It is required if you want to run `make` in the keymap folder.**

### Makefile options

Set the variables to `no` to disable them, and `yes` to enable them.

`BOOTMAGIC_ENABLE`

This allows you to hold a key and the salt key (space by default) and have access to a various EEPROM settings that persist over power loss. It's advised you keep this disabled, as the settings are often changed by accident, and produce confusing results that makes it difficult to debug. It's one of the more common problems encountered in help sessions.

`MOUSEKEY_ENABLE`

This gives you control over cursor movements and clicks via keycodes/custom functions.

`EXTRAKEY_ENABLE`

This allows you to use the system and audio control key codes.

`CONSOLE_ENABLE`

This allows you to print messages that can be read using [`hid_listen`](https://www.pjrc.com/teensy/hid_listen.html). Add this to your `Makefile`, and set it to `yes`. Then put `println`, `printf`, etc. in your keymap or anywhere in the `qmk` source. Finally, open `hid_listen` and enjoy looking at your printed messages.

`COMMAND_ENABLE`

TODO

`SLEEP_LED_ENABLE`

Enables your LED to breath while your computer is sleeping. Timer1 is being used here. This feature is largely unused and untested, and needs updating/abstracting.

`NKRO_ENABLE`

This allows for n-key rollover (default is 6) to be enabled. It is off by default, but can be forced by adding `#define FORCE_NKRO` to your config.h.

`BACKLIGHT_ENABLE`

This enables your backlight on Timer1 and ports B5, B6, or B7 (for now). You can specify your port by putting this in your `config.h`:

    #define BACKLIGHT_PIN B7

`MIDI_ENABLE`

This enables MIDI sending and receiving with your keyboard. To enter MIDI send mode, you can use the keycode `MI_ON`, and `MI_OFF` to turn it off. This is a largely untested feature, but more information can be found in the `quantum/quantum.c` file.

`UNICODE_ENABLE`

This allows you to send unicode symbols via `UC(<unicode>)` in your keymap. Only codes up to 0x7FFF are currently supported.

`BLUETOOTH_ENABLE`

This allows you to interface with a Bluefruit EZ-key to send keycodes wirelessly. It uses the D2 and D3 pins.

`AUDIO_ENABLE`