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qmk_firmware

custom branch of QMK firmware git clone https://anongit.hacktivis.me/git/qmk_firmware.git

readme.md (2712B)

    

  1. # bluepill splittest
  3. This is the splittest example for the bluepill MCU.
  4. To trigger keypress, short together pins _B10_ and _B1_.
  6. ## Keyboard Configuration
  8. The type of communication (bitbang, serial (half/full duplex)) is set by the keymap `config.h` file with variables with `SPLIT_` prefix.
  9. So this example uses:
  11. -   `config.h` to set which SDI to use for serial. Either define `USE_SDI1_ON_STANDARD_ROLE_PINS`, `USE_SDI1_ON_ALTERNATE_ROLE_PINS` or `USE_SDI2` before the `#ifdef` that configures the default case when none of these variable is defined.
  12. -   `post_config.h` for defining the communication pins between the halves once the keymap is configured.
  14. On your keyboard, you most likely will only use `config.h` because you'd have already chosen your communication scheme: serial type, SDI, pins.
  16. ## Wiring
  18. ### Switches
  20. -   Add switches to both Bluepills across B10 and B1 pins
  22. ### Handedness
  24. Have a look at the [handedness documentation](https://docs.qmk.fm/#/feature_split_keyboard?id=setting-handedness)
  26. -   Add pull-up resistor to left side between VCC and A7
  27. -   Add pull-down resistors to right side between GND and A7
  29. ### Send power to the other half
  31. -   Connect the following pins on both sides together: GND, VCC
  33. ### Halves data connection
  35. Choose one of the connection type
  37. #### serial - bitbang
  39. -   Connect the B8 pins on both sides together
  41. #### serial - usart half duplex
  43. Check the [documentation](https://docs.qmk.fm/#/serial_driver?id=usart-half-duplex) to determine the pull-up resistor.
  45. -   To use the default usart (USART1) with the standard role pins,
  46.     -   Connect the A9 pins on both sides together and to add a pull-up resistor on one of these pins
  47.     -   Define USE_SDI1_ON_STANDARD_ROLE_PINS in config.h
  48. -   To use the default usart (USART1) with the alternate role pins,
  49.     -   Connect the B6 pins on both sides together and to add a pull-up resistor on one of these pins
  50.     -   Define USE_SDI1_ON_ALTERNATE_ROLE_PINS in config.h
  51. -   To use the usart2 (USART2) pins,
  52.     -   Connect the A2 pins on both sides together and to add a pull-up resistor on one of these pins
  53.     -   Define USE_SDI2 in config.h
  55. #### serial - usart full duplex
  57. -   To use the default usart (USART1) with the standard role pins,
  58.     -   Connect the mpins on A9, A10 one to the other on each side
  59.     -   Define USE_SDI1_ON_STANDARD_ROLE_PINS in config.h
  60. -   To use the default usart (USART1) with the alternate role pins,
  61.     -   Connect the pins B6, B7 one to the other on each side
  62.     -   Define USE_SDI1_ON_ALTERNATE_ROLE_PINS in config.h
  63. -   To use the usart2 (USART2) pins,
  64.     -   Connect the pins A2, A3 one to the other on each side
  65.     -   Define USE_SDI2 in config.h