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keychron_qmk_firmware/keyboards/jj40
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Jack Humbert 9fdc276260
Updates bootloader settings, adds file size check (#2029) 
* pull fuse settings for bootloader jump

* fix 32a chips

* make automatic bootloader selection optional

* quantify bootloaders

* fixs #164, speeds up dfu reset

* fix for chips w/o usb

* missing an n

* fix bootloader sizes, use words for addresses

* fix bmini, pearl, and [[ issue, make things quiet

* ignore avr errors on arm for now

* update settings for the light

* document bootloader stuff

* add bootloader title
2017-11-27 23:08:21 -05:00
..
keymaps JJ40 updates (#2056) 2017-11-27 16:08:53 -05:00
tools Add multiple layout support and Linux flash utility to JJ40 (#1837) 2017-10-13 19:04:36 -10:00
config.h Updates bootloader settings, adds file size check (#2029) 2017-11-27 23:08:21 -05:00
i2c.c
i2c.h
jj40.c JJ40 updates (#2056) 2017-11-27 16:08:53 -05:00
jj40.h Add multiple layout support and Linux flash utility to JJ40 (#1837) 2017-10-13 19:04:36 -10:00
matrix.c
README.md Fixed bootloader access key 2017-11-26 02:22:23 -05:00
rules.mk Updates bootloader settings, adds file size check (#2029) 2017-11-27 23:08:21 -05:00
usbconfig.h

README.md

jj40

jj40

A compact 40% (12x4) ortholinear keyboard kit made and KPRepublic on AliExpress.

Keyboard Maintainer: QMK Community
Hardware Supported: Atmega32A
Hardware Availability: AliExpress

Make example for this keyboard (after setting up your build environment):

make jj40:default:program

See build environment setup then the make instructions 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 Backspace (Top Right Key) to keep it in the bootloader:

$ make jj40
$ bootloadHID -r jj40_default.hex

Troubleshooting

  1. Try plugging the board in while pressing Backspace (Top Right Key). 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.