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1# QMK Breaking Change - 2020 Nov 28 Changelog
2
3Four times a year QMK runs a process for merging Breaking Changes. A Breaking Change is any change which modifies how QMK behaves in a way that is incompatible or potentially dangerous. We limit these changes to 4 times per year so that users can have confidence that updating their QMK tree will not break their keymaps.
4
5
6## Changes Requiring User Action :id=changes-requiring-user-action
7
8### Relocated Keyboards :id-relocated-keyboards
9
10#### Reduce Helix keyboard build variation ([#8669](https://github.com/qmk/qmk_firmware/pull/8669))
11
12The build commands for the Helix keyboard are:
13
14```
15make <helix_build_name>:<keymap_name>
16```
17
18For `<helix_build_name>`, specify the one in the rightmost column of the table below, such as `helix`,` helix/pico`.
19
20| before Oct 17 2019 | Oct 17 2019 | Mar 10 2020 | Nov 28 2020 |
21| ---------------------|-------------------------|-------------------------| ------------------------|
22| helix/rev1 | helix/rev1 | helix/rev1 | helix/rev1 |
23| helix/pico | helix/pico | helix/pico | helix/pico |
24| | helix/pico/back | helix/pico/back | helix/pico/back |
25| | helix/pico/under | helix/pico/under | helix/pico/under |
26| | | helix/pico/sc | -- |
27| | | helix/pico/sc/back | helix/pico/sc |
28| | | helix/pico/sc/under | -- |
29| helix/rev2 (=helix) | helix/rev2 (=helix) | helix/rev2 (=helix) | -- |
30| | helix/rev2/back | helix/rev2/back | -- |
31| | helix/rev2/back/oled | helix/rev2/back/oled | ( --> helix/rev2/back) |
32| | helix/rev2/oled | helix/rev2/oled | helix/rev2　(=helix) |
33| | helix/rev2/oled/back | helix/rev2/oled/back | helix/rev2/back |
34| | helix/rev2/oled/under | helix/rev2/oled/under | helix/rev2/under |
35| | | helix/rev2/sc | -- |
36| | | helix/rev2/sc/back | -- |
37| | | helix/rev2/sc/oled | -- |
38| | | helix/rev2/sc/oledback | helix/rev2/sc |
39| | | helix/rev2/sc/oledunder | -- |
40| | | helix/rev2/sc/under | -- |
41| | helix/rev2/under | helix/rev2/under | -- |
42| | helix/rev2/under/oled | helix/rev2/under/oled | ( --> helix/rev2/under) |
43
44#### Update the Speedo firmware for v3.0 ([#10657](https://github.com/qmk/qmk_firmware/pull/10657))
45
46The Speedo keyboard has moved to `cozykeys/speedo/v2` as the designer prepares to release the Speedo v3.0.
47
48| Previous Name | New Name |
49| :------------ | :------------------------- |
50| speedo | cozykeys/speedo/v2 |
51| -- | cozykeys/speedo/v3 **new** |
52
53#### Maartenwut/Maarten name change to evyd13/Evy ([#10274](https://github.com/qmk/qmk_firmware/pull/10274))
54
55Maartenwut has rebranded as @evyd13, and all released Maartenwut boards have moved.
56
57| Previous Name | New Name |
58| :--------------------- | :----------------- |
59| maartenwut/atom47/rev2 | evyd13/atom47/rev2 |
60| maartenwut/atom47/rev3 | evyd13/atom47/rev3 |
61| maartenwut/eon40 | evyd13/eon40 |
62| maartenwut/eon65 | evyd13/eon65 |
63| maartenwut/eon75 | evyd13/eon75 |
64| maartenwut/eon87 | evyd13/eon87 |
65| maartenwut/eon95 | evyd13/eon95 |
66| maartenwut/gh80_1800 | evyd13/gh80_1800 |
67| maartenwut/gh80_3700 | evyd13/gh80_3700 |
68| maartenwut/minitomic | evyd13/minitomic |
69| maartenwut/mx5160 | evyd13/mx5160 |
70| maartenwut/nt660 | evyd13/nt660 |
71| maartenwut/omrontkl | evyd13/omrontkl |
72| maartenwut/plain60 | evyd13/plain60 |
73| maartenwut/pockettype | evyd13/pockettype |
74| maartenwut/quackfire | evyd13/quackfire |
75| maartenwut/solheim68 | evyd13/solheim68 |
76| maartenwut/ta65 | evyd13/ta65 |
77| maartenwut/wasdat | evyd13/wasdat |
78| maartenwut/wasdat_code | evyd13/wasdat_code |
79| maartenwut/wonderland | evyd13/wonderland |
80
81#### Xelus Valor and Dawn60 Refactors ([#10512](https://github.com/qmk/qmk_firmware/pull/10512), [#10584](https://github.com/qmk/qmk_firmware/pull/10584))
82
83The Valor and Dawn60 keyboards by Xelus22 both now require their revisions to be specified when compiling.
84
85| Previous Name | New Name |
86| :------------ | :---------------- |
87| xelus/dawn60 | xelus/dawn60/rev1 |
88| xelus/valor | xelus/valor/rev1 |
89
90
91### Updated Keyboard Codebases :id=keyboard-updates
92
93#### AEboards EXT65 Refactor ([#10820](https://github.com/qmk/qmk_firmware/pull/10820))
94
95The EXT65 codebase has been reworked so keymaps can be used with either revision.
96
97
98## Core Changes :id=core-changes
99
100### Fixes :id=core-fixes
101
102* Reconnect the USB if users wake up a computer from the keyboard to restore the USB state ([#10088](https://github.com/qmk/qmk_firmware/pull/10088))
103* Fix cursor position bug in oled_write_raw functions ([#10800](https://github.com/qmk/qmk_firmware/pull/10800))
104
105### Additions and Enhancements :id=core-additions
106
107* Allow MATRIX_ROWS to be greater than 32 ([#10183](https://github.com/qmk/qmk_firmware/pull/10183))
108* Add support for soft serial to ATmega32U2 ([#10204](https://github.com/qmk/qmk_firmware/pull/10204))
109* Allow direct control of MIDI velocity value ([#9940](https://github.com/qmk/qmk_firmware/pull/9940))
110* Joystick 16-bit support ([#10439](https://github.com/qmk/qmk_firmware/pull/10439))
111* Allow encoder resolutions to be set per encoder ([#10259](https://github.com/qmk/qmk_firmware/pull/10259))
112* Share button state from mousekey to pointing_device ([#10179](https://github.com/qmk/qmk_firmware/pull/10179))
113* Add advanced/efficient RGB Matrix Indicators ([#8564](https://github.com/qmk/qmk_firmware/pull/8564))
114* OLED display update interval support ([#10388](https://github.com/qmk/qmk_firmware/pull/10388))
115* Per-Key Retro Tapping ([#10622](https://github.com/qmk/qmk_firmware/pull/10622))
116* Allow backlight duty cycle limit ([#10260](https://github.com/qmk/qmk_firmware/pull/10260))
117* Add step sequencer feature ([#9703](https://github.com/qmk/qmk_firmware/pull/9703))
118* Added `add_oneshot_mods` & `del_oneshot_mods` ([#10549](https://github.com/qmk/qmk_firmware/pull/10549))
119* Add AT90USB support for serial.c ([#10706](https://github.com/qmk/qmk_firmware/pull/10706))
120* Auto shift: support repeats and early registration (#9826)
121
122### Clean-ups and Optimizations :id=core-optimizations
123
124* Haptic and solenoid cleanup ([#9700](https://github.com/qmk/qmk_firmware/pull/9700))
125* XD75 cleanup ([#10524](https://github.com/qmk/qmk_firmware/pull/10524))
126* Minor change to behavior allowing display updates to continue between task ticks ([#10750](https://github.com/qmk/qmk_firmware/pull/10750))
127* Change some GPIO manipulations in matrix.c to be atomic ([#10491](https://github.com/qmk/qmk_firmware/pull/10491))
128* combine repeated lines of code for ATmega32U2, ATmega16U2, ATmega328 and ATmega328P ([#10837](https://github.com/qmk/qmk_firmware/pull/10837))
129* Remove references to HD44780 ([#10735](https://github.com/qmk/qmk_firmware/pull/10735))
130
131
132## QMK Infrastructure and Internals :id=qmk-internals
133
134* Add ability to build a subset of all keyboards based on platform. ([#10420](https://github.com/qmk/qmk_firmware/pull/10420))
135* Initialise EEPROM drivers at startup, instead of upon first execution ([#10438](https://github.com/qmk/qmk_firmware/pull/10438))
136* Make bootloader_jump weak for ChibiOS ([#10417](https://github.com/qmk/qmk_firmware/pull/10417))
137* Support for STM32 GPIOF,G,H,I,J,K ([#10206](https://github.com/qmk/qmk_firmware/pull/10206))
138* Add milc as a dependency and remove the installed milc ([#10563](https://github.com/qmk/qmk_firmware/pull/10563))
139* ChibiOS upgrade: early init conversions ([#10214](https://github.com/qmk/qmk_firmware/pull/10214))
140* ChibiOS upgrade: configuration file migrator ([#9952](https://github.com/qmk/qmk_firmware/pull/9952))
141* Add definition based on currently-selected serial driver. ([#10716](https://github.com/qmk/qmk_firmware/pull/10716))
142* Allow for modification of output RGB values when using rgblight/rgb_matrix. ([#10638](https://github.com/qmk/qmk_firmware/pull/10638))
143* Allow keyboards/keymaps to execute code at each main loop iteration ([#10530](https://github.com/qmk/qmk_firmware/pull/10530))
144* qmk cformat ([#10767](https://github.com/qmk/qmk_firmware/pull/10767))
145* Add a Make variable to easily enable DEBUG_MATRIX_SCAN_RATE on the command line ([#10824](https://github.com/qmk/qmk_firmware/pull/10824))
146* update Chibios OS USB for the OTG driver ([#8893](https://github.com/qmk/qmk_firmware/pull/8893))
147* Fixup version.h writing when using `SKIP_VERSION=yes` ([#10972](https://github.com/qmk/qmk_firmware/pull/10972), [#10974](https://github.com/qmk/qmk_firmware/pull/10974))
148* Rename ledmatrix.h to match .c file ([#7949](https://github.com/qmk/qmk_firmware/pull/7949))
149* Split RGB_MATRIX_ENABLE into _ENABLE and _DRIVER ([#10231](https://github.com/qmk/qmk_firmware/pull/10231))
150* Split LED_MATRIX_ENABLE into _ENABLE and _DRIVER ([#10840](https://github.com/qmk/qmk_firmware/pull/10840))
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