84 lines
3.9 KiB
Markdown
84 lines
3.9 KiB
Markdown
YMD75 / MT84
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==========================
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This is a port of the QMK firmware for boards that are based on the
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ps2avrGB firmware, like the [ps2avrGB keyboard] (https://www.keyclack.com/product/gb-ps2avrgb/), for use on the YMD75, from YMDK. YMDK sell the board and name it "YMD75", however the PCB has "MT84" printed on both sides.
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Most of the code was taken and amended from YMD96 and my port JJ50, which in itself was taken from ps2avrGB and amended by Andrew Novak.
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Note that this is a complete replacement for the firmware, so you won't be
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using Bootmapper Client to change any keyboard settings, since not all the
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USB report options are supported.
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Hardware Supported: YMD75/MT84 with the ATmega32a chip.
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Hardware Availability: The YMD75/MT84 PCB is available from YMDK on AliExpress and suchlike.
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This version by Wayne K Jones (github.com/WarmCatUK)
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## Installing and Building
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Make example for this keyboard (after setting up your build environment):
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```
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$ make ymd75:default:program
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```
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It should detect the keyboard and set it to bootloader mode automatically, prior to flashing firmware.
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I've found that I need to remove the previous build/file before making a new one as it doesn't overwrite it; but this might just be my personal experience.
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See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
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Note that this is a complete replacement for the firmware, so you won't be
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using Bootmapper Client to change any keyboard settings, since not all the
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USB report options are supported.
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In addition you may need the AVR toolchain and `bootloadHID` for flashing:
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```
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$ brew cask install crosspack-avr
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$ brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
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```
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In order to use the `./program` script, which can reboot the board into
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the bootloader, you'll need Python 2 with PyUSB installed:
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```
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$ pip install pyusb
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```
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If you prefer, you can just build it and flash the firmware directly with
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`bootloadHID` if you boot the board while holding down `Left Control` to keep it
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in the bootloader:
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```
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$ make ymd75
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$ bootloadHID -r ymd75_default.hex
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```
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I dont use windows personally, but the following is from ymd96 regarding flashing the atmega32a:
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Since the YMD75/MT84 uses an ATmega32a chip instead of the 32u4, you need to download [HIDBootFlash v.1.0](http://vusb.wikidot.com/project:hidbootflash) for Windows. If anyone knows of a Linux/Mac bootflasher that works, edit this readme!
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On Windows, I use [MINGw](http://www.mingw.org/) to compile the keymaps. On Linux or OSX you can simply use the terminal.
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Once you have those two pieces of software:
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Build the keyboard with
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```
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$ make ymd75:default
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```
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If you make your own layout, change the `default` word to whatever your layout is.
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And flash the compiled hex file with `HIDBootFlash`. Simply put the board in flashing mode by plugging it in while holding the key below the top right key, and click `find device`. Then you can specify the .hex file and flash it to the device.
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## Troubleshooting
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1. Try plugging the board in while pressing `Backspace` (`Key below the 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.
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2. Sometimes USB hubs can act weird, so try connecting the board directly to your computer or plugging/unplugging the USB hub.
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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.
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4. I was occasionally finding that I wasn't flashing changes that I was making to my keymap. If that happens, remove the previous build and simply force rebuild by making with:
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```
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$ rm ymd75_default.hex
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$ make -B ymd75:default
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$ make -B ymd75:default:program
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```
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