keychron_qmk_firmware/keyboards/jj40/README.md
Jack Humbert 800ec55dfc Make arguments redo, subproject elimination (#1784)
* redo make args to use colons, better folder structuring system [skip ci]

* don't put spaces after statements - hard lessons in makefile development

* fix-up some other rules.mk

* give travis a chance

* reset KEYMAPS variable

* start converting keyboards to new system

* try making all with travis

* redo make args to use colons, better folder structuring system [skip ci]

* don't put spaces after statements - hard lessons in makefile development

* fix-up some other rules.mk

* give travis a chance

* reset KEYMAPS variable

* start converting keyboards to new system

* try making all with travis

* start to update readmes and keyboards

* look in keyboard directories for board.mk

* update visualizer rules

* fix up some other keyboards/keymaps

* fix arm board ld includes

* fix board rules

* fix up remaining keyboards

* reset layout variable

* reset keyboard_layouts

* fix remainging keymaps/boards

* update readmes, docs

* add note to makefile error

* update readmes

* remove planck keymap warnings

* update references and docs

* test out tarvis build stages

* don't use stages for now

* don't use stages for now
2017-10-14 11:32:19 -10:00

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Markdown

# jj40
![jj40](https://ae01.alicdn.com/kf/HTB18bq6bOERMeJjSspiq6zZLFXar.jpg?size=359506&height=562&width=750&hash=663a22d0109e2416ec8f54a7658686da)
A compact 40% (12x4) ortholinear keyboard kit made and KPRepublic on AliExpress.
Keyboard Maintainer: [QMK Community](https://github.com/qmk)
Hardware Supported: Atmega32A
Hardware Availability: [AliExpress](https://www.aliexpress.com/store/product/jj40-Custom-Mechanical-Keyboard-40-PCB-programmed-40-planck-layouts-bface-firmware-gh40/3034003_32828781103.html)
Make example for this keyboard (after setting up your build environment):
make jj40:default:program
See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
Note that this is a complete replacement for the firmware, so you won't be
using Bootmapper Client to change any keyboard settings, since not all the
USB report options are supported.
In addition you may need the AVR toolchain and `bootloadHID` for flashing:
```
$ brew cask install crosspack-avr
$ brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
```
In order to use the `./program` script, which can reboot the board into
the bootloader, you'll need Python 2 with PyUSB installed:
```
$ pip install pyusb
```
If you prefer, you can just build it and flash the firmware directly with
`bootloadHID` if you boot the board while holding down `L_Ctrl` to keep it
in the bootloader:
```
$ make jj40
$ bootloadHID -r jj40_default.hex
```
## Troubleshooting
1. Try plugging the board in while pressing `L_Ctrl`. This will force it
to boot only the bootloader without loading the firmware. Once this is
done, just reflash the board with the original firmware.
2. Sometimes USB hubs can act weird, so try connecting the board directly
to your computer or plugging/unplugging the USB hub.
3. If you get an error such as "Resource Unavailable" when attemting to flash
on Linux, you may want to compile and run `tools/usb_detach.c`. See `tools/README.md`
for more info.