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Jack Humbert 65faab3b89 Moves features to their own files (process_*), adds tap dance feature (#460) 
* non-working commit

* working

* subprojects implemented for planck

* pass a subproject variable through to c

* consolidates clueboard revisions

* thanks for letting me know about conflicts..

* turn off audio for yang's

* corrects starting paths for subprojects

* messing around with travis

* semicolon

* travis script

* travis script

* script for travis

* correct directory (probably), amend files to commit

* remove origin before adding

* git pull, correct syntax

* git checkout

* git pull origin branch

* where are we?

* where are we?

* merging

* force things to happen

* adds commit message, adds add

* rebase, no commit message

* rebase branch

* idk!

* try just pull

* fetch - merge

* specify repo branch

* checkout

* goddammit

* merge? idk

* pls

* after all

* don't split up keyboards

* syntax

* adds quick for all-keyboards

* trying out new script

* script update

* lowercase

* all keyboards

* stop replacing compiled.hex automatically

* adds if statement

* skip automated build branches

* forces push to automated build branch

* throw an add in there

* upstream?

* adds AUTOGEN

* ignore all .hex files again

* testing out new repo

* global ident

* generate script, keyboard_keymap.hex

* skip generation for now, print pandoc info, submodule update

* try trusty

* and sudo

* try generate

* updates subprojects to keyboards

* no idea

* updates to keyboards

* cleans up clueboard stuff

* setup to use local readme

* updates cluepad, planck experimental

* remove extra led.c [ci skip]

* audio and midi moved over to separate files

* chording, leader, unicode separated

* consolidate each [skip ci]

* correct include

* quantum: Add a tap dance feature (#451)

* quantum: Add a tap dance feature

With this feature one can specify keys that behave differently, based on
the amount of times they have been tapped, and when interrupted, they
get handled before the interrupter.

To make it clear how this is different from `ACTION_FUNCTION_TAP`, lets
explore a certain setup! We want one key to send `Space` on single tap,
but `Enter` on double-tap.

With `ACTION_FUNCTION_TAP`, it is quite a rain-dance to set this up, and
has the problem that when the sequence is interrupted, the interrupting
key will be send first. Thus, `SPC a` will result in `a SPC` being sent,
if they are typed within `TAPPING_TERM`. With the tap dance feature,
that'll come out as `SPC a`, correctly.

The implementation hooks into two parts of the system, to achieve this:
into `process_record_quantum()`, and the matrix scan. We need the latter
to be able to time out a tap sequence even when a key is not being
pressed, so `SPC` alone will time out and register after `TAPPING_TERM`
time.

But lets start with how to use it, first!

First, you will need `TAP_DANCE_ENABLE=yes` in your `Makefile`, because
the feature is disabled by default. This adds a little less than 1k to
the firmware size. Next, you will want to define some tap-dance keys,
which is easiest to do with the `TD()` macro, that - similar to `F()`,
takes a number, which will later be used as an index into the
`tap_dance_actions` array.

This array specifies what actions shall be taken when a tap-dance key is
in action. Currently, there are two possible options:

* `ACTION_TAP_DANCE_DOUBLE(kc1, kc2)`: Sends the `kc1` keycode when
  tapped once, `kc2` otherwise.
* `ACTION_TAP_DANCE_FN(fn)`: Calls the specified function - defined in
  the user keymap - with the current state of the tap-dance action.

The first option is enough for a lot of cases, that just want dual
roles. For example, `ACTION_TAP_DANCE(KC_SPC, KC_ENT)` will result in
`Space` being sent on single-tap, `Enter` otherwise.

And that's the bulk of it!

Do note, however, that this implementation does have some consequences:
keys do not register until either they reach the tapping ceiling, or
they time out. This means that if you hold the key, nothing happens, no
repeat, no nothing. It is possible to detect held state, and register an
action then too, but that's not implemented yet. Keys also unregister
immediately after being registered, so you can't even hold the second
tap. This is intentional, to be consistent.

And now, on to the explanation of how it works!

The main entry point is `process_tap_dance()`, called from
`process_record_quantum()`, which is run for every keypress, and our
handler gets to run early. This function checks whether the key pressed
is a tap-dance key. If it is not, and a tap-dance was in action, we
handle that first, and enqueue the newly pressed key. If it is a
tap-dance key, then we check if it is the same as the already active
one (if there's one active, that is). If it is not, we fire off the old
one first, then register the new one. If it was the same, we increment
the counter and the timer.

This means that you have `TAPPING_TERM` time to tap the key again, you
do not have to input all the taps within that timeframe. This allows for
longer tap counts, with minimal impact on responsiveness.

Our next stop is `matrix_scan_tap_dance()`. This handles the timeout of
tap-dance keys.

For the sake of flexibility, tap-dance actions can be either a pair of
keycodes, or a user function. The latter allows one to handle higher tap
counts, or do extra things, like blink the LEDs, fiddle with the
backlighting, and so on. This is accomplished by using an union, and
some clever macros.

In the end, lets see a full example!

```c
enum {
 CT_SE = 0,
 CT_CLN,
 CT_EGG
};

/* Have the above three on the keymap, TD(CT_SE), etc... */

void dance_cln (qk_tap_dance_state_t *state) {
  if (state->count == 1) {
    register_code (KC_RSFT);
    register_code (KC_SCLN);
    unregister_code (KC_SCLN);
    unregister_code (KC_RSFT);
  } else {
    register_code (KC_SCLN);
    unregister_code (KC_SCLN);
    reset_tap_dance (state);
  }
}

void dance_egg (qk_tap_dance_state_t *state) {
  if (state->count >= 100) {
    SEND_STRING ("Safety dance!");
    reset_tap_dance (state);
  }
}

const qk_tap_dance_action_t tap_dance_actions[] = {
  [CT_SE]  = ACTION_TAP_DANCE_DOUBLE (KC_SPC, KC_ENT)
 ,[CT_CLN] = ACTION_TAP_DANCE_FN (dance_cln)
 ,[CT_EGG] = ACTION_TAP_DANCE_FN (dance_egg)
};
```

This addresses #426.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* hhkb: Fix the build with the new tap-dance feature

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* tap_dance: Move process_tap_dance further down

Process the tap dance stuff after midi and audio, because those don't
process keycodes, but row/col positions.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* tap_dance: Use conditionals instead of dummy functions

To be consistent with how the rest of the quantum features are
implemented, use ifdefs instead of dummy functions.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* Merge branch 'master' into quantum-keypress-process

# Conflicts:
#	Makefile
#	keyboards/planck/rev3/config.h
#	keyboards/planck/rev4/config.h

* update build script
2016-06-29 17:49:41 -04:00
..
keymaps zoom and undo keys 2016-06-26 20:24:43 -07:00
util
190hotfix.sh
config.h
ergodox_ez.c Backlight abstraction and other changes (#439) 2016-06-23 22:18:20 -04:00
ergodox_ez.h Backlight abstraction and other changes (#439) 2016-06-23 22:18:20 -04:00
i2cmaster.h
Makefile
matrix.c Moves features to their own files (process_*), adds tap dance feature (#460) 2016-06-29 17:49:41 -04:00
readme.md Backlight abstraction and other changes (#439) 2016-06-23 22:18:20 -04:00
twimaster.c

readme.md

Getting started

There are two main ways you could customize the ErgoDox EZ.

The Easy Way: Use an existing firmware file and just flash it

  1. Download and install the Teensy Loader. Some Linux distributions already provide a binary (may be called teensy-loader-cli), so you may prefer to use this.
  2. Find a firmware file you like. You can find a few if these in the keymaps subdirectory right here. The file you need ends with .hex, and you can look at its .c counterpart (or its PNG image) to see what you'll be getting. You can also use the Massdrop configurator to create a firmware Hex file you like.
  3. Download the firmware file
  4. Connect the keyboard, press its Reset button (gently insert a paperclip into the hole in the top-right corner) and flash it using the Teensy loader you installed on step 1 and the firmware you downloaded.

More technical: create your own totally custom firmware by editing the source files.

This requires a little bit of familiarity with coding.

  1. Go to https://github.com/jackhumbert/qmk_firmware and read the readme at the base of this repository, top to bottom. Then come back here :)
  2. Clone the repository (download it)
  3. Set up a build environment as per the build guide
    • Using a Mac and have homebrew? just run brew tap osx-cross/avr && brew install avr-libc
  4. Copy keyboards/ergodox_ez/keymaps/default/keymap.c into keymaps/your_name/keymap.c (for example, keymaps/german/keymap.c)
  5. Edit this file, changing keycodes to your liking (see "Finding the keycodes you need" below). Try to edit the comments as well, so the "text graphics" represent your layout correctly. See below for more tips on sharing your work.
  6. Compile your firmware by running make keymap=your_name. For example, make keymap=german. This will result in a hex file, which will be called ergodox_ez_your_name.hex, e.g. ergodox_ez_german.hex.
  7. Flash this hex file using the Teensy loader as described in step 4 in the "Easy Way" above. If you prefer you can automatically flash the hex file after successfull build by running make teensy keymap=your_name.
  8. Submit your work as a pull request to this repository, so others can also use it. :) See below on specifics.

Good luck! :)

Contributing your keymap

The ErgoDox EZ firmware is open-source, so it would be wonderful to have your contribution! Within a very short time after launching we already amassed almost 20 user-contributed keymaps, with all sorts of creative improvements and tweaks. This is very valuable for people who aren't comfortable coding, but do want to customize their ErgoDox EZ. To make it easy for these people to use your layout, I recommend submitting your PR in the following format.

  1. All work goes inside your keymap subdirectory (keymaps/german in this example).
  2. keymap.c - this is your actual keymap file; please update the ASCII comments in the file so they correspond with what you did.
  3. readme.md - a readme file, which GitHub would display by default when people go to your directory. Explain what's different about your keymap, what you tweaked or how it works. No specific format to follow, just communicate what you did. :)
  4. Any graphics you wish to add. This is absolutely not a must. If you feel like it, you can use Keyboard Layout Editor to make something and grab a screenshot, but it's really not a must. If you do have graphics, your readme can just embed the graphic as a link, just like I did with the default layout.

Finding the keycodes you need

Let's say you want a certain key in your layout to send a colon; to figure out what keycode to use to make it do that, you're going to need quantum/keymap_common.h.

That file contains a big list of all of the special, fancy keys (like, being able to send % on its own and whatnot).

If you want to send a plain vanilla key, you can look up its code under doc/keycode.txt. That's where all the boring keys hang out.