1 # Auto Shift: Why Do We Need a Shift Key?
3 Tap a key and you get its character. Tap a key, but hold it *slightly* longer
4 and you get its shifted state. VoilĂ ! No shift key needed!
8 Many people suffer from various forms of RSI. A common cause is stretching your
9 fingers repetitively long distances. For us on the keyboard, the pinky does that
10 all too often when reaching for the shift key. Auto Shift looks to alleviate that
15 When you tap a key, it stays depressed for a short period of time before it is
16 then released. This depressed time is a different length for everyone. Auto Shift
17 defines a constant `AUTO_SHIFT_TIMEOUT` which is typically set to twice your
18 normal pressed state time. When you press a key, a timer starts and then stops
19 when you release the key. If the time depressed is greater than or equal to the
20 `AUTO_SHIFT_TIMEOUT`, then a shifted version of the key is emitted. If the time
21 is less than the `AUTO_SHIFT_TIMEOUT` time, then the normal state is emitted.
23 ## Are There Limitations to Auto Shift?
27 1. Key repeat will cease to work. For example, before if you wanted 20 'a'
28 characters, you could press and hold the 'a' key for a second or two. This no
29 longer works with Auto Shift because it is timing your depressed time instead
30 of emitting a depressed key state to your operating system.
31 2. You will have characters that are shifted when you did not intend on shifting, and
32 other characters you wanted shifted, but were not. This simply comes down to
33 practice. As we get in a hurry, we think we have hit the key long enough
34 for a shifted version, but we did not. On the other hand, we may think we are
35 tapping the keys, but really we have held it for a little longer than
38 ## How Do I Enable Auto Shift?
40 Add to your `rules.mk` in the keymap folder:
42 AUTO_SHIFT_ENABLE = yes
44 If no `rules.mk` exists, you can create one.
46 Then compile and install your new firmware with Auto Key enabled! That's it!
50 By default, Auto Shift is disabled for any key press that is accompanied by one or more
51 modifiers. Thus, Ctrl+A that you hold for a really long time is not the same
54 You can re-enable Auto Shift for modifiers by adding another rule to your `rules.mk`
56 AUTO_SHIFT_MODIFIERS = yes
58 In which case, Ctrl+A held past the `AUTO_SHIFT_TIMEOUT` will be sent as Ctrl+Shift+A
60 ## Configuring Auto Shift
62 If desired, there is some configuration that can be done to change the
63 behavior of Auto Shift. This is done by setting various variables the
64 `config.h` file located in your keymap folder. If no `config.h` file exists, you can create one.
71 #include "../../config.h"
73 #define AUTO_SHIFT_TIMEOUT 150
74 #define NO_AUTO_SHIFT_SPECIAL
78 ### AUTO_SHIFT_TIMEOUT (Value in ms)
80 This controls how long you have to hold a key before you get the shifted state.
81 Obviously, this is different for everyone. For the common person, a setting of
82 135 to 150 works great. However, one should start with a value of at least 175, which
83 is the default value. Then work down from there. The idea is to have the shortest time required to get the shifted state without having false positives.
85 Play with this value until things are perfect. Many find that all will work well
86 at a given value, but one or two keys will still emit the shifted state on
87 occasion. This is simply due to habit and holding some keys a little longer
88 than others. Once you find this value, work on tapping your problem keys a little
89 quicker than normal and you will be set.
91 ?> Auto Shift has three special keys that can help you get this value right very quick. See "Auto Shift Setup" for more details!
93 ### NO_AUTO_SHIFT_SPECIAL (simple define)
95 Do not Auto Shift special keys, which include -\_, =+, [{, ]}, ;:, '", ,<, .>,
98 ### NO_AUTO_SHIFT_NUMERIC (simple define)
100 Do not Auto Shift numeric keys, zero through nine.
102 ### NO_AUTO_SHIFT_ALPHA (simple define)
104 Do not Auto Shift alpha characters, which include A through Z.
106 ## Using Auto Shift Setup
108 This will enable you to define three keys temporarily to increase, decrease and report your `AUTO_SHIFT_TIMEOUT`.
112 Map three keys temporarily in your keymap:
114 | Key Name | Description |
115 |----------|-----------------------------------------------------|
116 | KC_ASDN | Lower the Auto Shift timeout variable (down) |
117 | KC_ASUP | Raise the Auto Shift timeout variable (up) |
118 | KC_ASRP | Report your current Auto Shift timeout value |
119 | KC_ASON | Turns on the Auto Shift Function |
120 | KC_ASOFF | Turns off the Auto Shift Function |
121 | KC_ASTG | Toggles the state of the Auto Shift feature |
123 Compile and upload your new firmware.
127 It is important to note that during these tests, you should be typing
128 completely normal and with no intention of shifted keys.
130 1. Type multiple sentences of alphabetical letters.
131 2. Observe any upper case letters.
132 3. If there are none, press the key you have mapped to `KC_ASDN` to decrease
133 time Auto Shift timeout value and go back to step 1.
134 4. If there are some upper case letters, decide if you need to work on tapping
135 those keys with less down time, or if you need to increase the timeout.
136 5. If you decide to increase the timeout, press the key you have mapped to
137 `KC_ASUP` and go back to step 1.
138 6. Once you are happy with your results, press the key you have mapped to
139 `KC_ASRP`. The keyboard will type by itself the value of your
140 `AUTO_SHIFT_TIMEOUT`.
141 7. Update `AUTO_SHIFT_TIMEOUT` in your `config.h` with the value reported.
142 8. Remove `AUTO_SHIFT_SETUP` from your `config.h`.
143 9. Remove the key bindings `KC_ASDN`, `KC_ASUP` and `KC_ASRP`.
144 10. Compile and upload your new firmware.
148 hello world. my name is john doe. i am a computer programmer playing with
151 [PRESS KC_ASDN quite a few times]
153 heLLo woRLd. mY nAMe is JOHn dOE. i AM A compUTeR proGRaMMER PlAYiNG witH
156 [PRESS KC_ASUP a few times]
158 hello world. my name is john Doe. i am a computer programmer playing with
165 The keyboard typed `115` which represents your current `AUTO_SHIFT_TIMEOUT`
166 value. You are now set! Practice on the *D* key a little bit that showed up
167 in the testing and you'll be golden.