124 lines
4.3 KiB
Markdown
124 lines
4.3 KiB
Markdown
DeltaSplit75
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======
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This readme and most of the code are from https://github.com/ahtn/tmk_keyboard/ and https://github.com/qmk/qmk_firmware/tree/master/keyboards/lets_split
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Credit to ahtn and wootpatoot for work on the split keyboard firmware
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Split keyboard firmware for Arduino Pro Micro or other ATmega32u4
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based boards.
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## First Time Setup
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Download or clone the whole firmware and navigate to the keyboards/DeltaSplit75 directory. Once your dev env is setup, you'll be able to generate the default .hex using:
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```
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$ make V2
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or
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$ make ProtoSplit (if you have one of the prototype PCBs)
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```
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You will see a lot of output and if everything worked correctly you will see the built hex files:
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```
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DeltaSplit75_ProtoSplit_Default
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or
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DeltaSplit75_V2_Default.hex
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```
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For more information on customizing keymaps, take a look at the primary documentation for [Customizing Your Keymap](/readme.md##customizing-your-keymap) in the main readme.md.
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### DeltaSplit75 V2
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The PCBs available in groupbuy are all v2, if you've bought one of my prototype PCBs (it says DeltaSplit65 on the silkscreen instead of 75), use the code $make ProtoSplit instead
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Features
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--------
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For the full Quantum Mechanical Keyboard feature list, see [the parent readme.md](/readme.md).
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Some features supported by the firmware:
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* Either half can connect to the computer via USB, or both halves can be used
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independently.
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* 75% formfactor
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* Support for multiple Bottom Rows
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* RGB underglow support
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* Split Backspace and ISO support
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Flashing
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-------
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I personally use xLoader to upload my hex files to the keyboard, though any other working software is fine too
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Choosing which board to plug the USB cable into (choosing Master)
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--------
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Because the two boards are identical, the firmware has logic to differentiate the left and right board.
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It uses two strategies to figure things out: look at the EEPROM (memory on the chip) or looks if the current board has the usb cable.
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The EEPROM approach requires additional setup (flashing the eeeprom) but allows you to swap the usb cable to either side.
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The USB cable approach is easier to setup and if you just want the usb cable on the left board, you do not need to do anything extra.
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### Setting the left hand as master
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If you always plug the usb cable into the left board, nothing extra is needed as this is the default. Comment out `EE_HANDS` and comment out `I2C_MASTER_RIGHT` or `MASTER_RIGHT` if for some reason it was set.
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### Setting the right hand as master
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If you always plug the usb cable into the right board, add an extra flag to your `config.h`
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```
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#define MASTER_RIGHT
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```
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### Setting EE_hands to use either hands as master
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If you define `EE_HANDS` in your `config.h`, you will need to set the
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EEPROM for the left and right halves.
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The EEPROM is used to store whether the
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half is left handed or right handed. This makes it so that the same firmware
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file will run on both hands instead of having to flash left and right handed
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versions of the firmware to each half. To flash the EEPROM file for the left
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half run:
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```
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avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-lefthand.eep
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// or the equivalent in dfu-programmer
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```
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and similarly for right half
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```
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avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-righhand.eep
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// or the equivalent in dfu-programmer
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```
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NOTE: replace `$(COM_PORT)` with the port of your device (e.g. `/dev/ttyACM0`)
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After you have flashed the EEPROM, you then need to set `EE_HANDS` in your config.h, rebuild the hex files and reflash.
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Note that you need to program both halves, but you have the option of using
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different keymaps for each half. You could program the left half with a QWERTY
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layout and the right half with a Colemak layout using bootmagic's default layout option.
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Then if you connect the left half to a computer by USB the keyboard will use QWERTY and Colemak when the
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right half is connected.
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Notes on Using Pro Micro 3.3V
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-----------------------------
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Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
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the frequency on the 3.3V board.
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Also, if the slave board is producing weird characters in certain columns,
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update the following line in `matrix.c` to the following:
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```
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// _delay_us(30); // without this wait read unstable value.
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_delay_us(300); // without this wait read unstable value.
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```
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