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diff --git a/docs/feature_converters.md b/docs/feature_converters.md new file mode 100644 index 0000000000..936ab44559 --- /dev/null +++ b/docs/feature_converters.md @@ -0,0 +1,123 @@ +# Converters + +Since many drop-in replacement controllers now exist, we've done our best to make them easy to use in existing designs. + +This page documents the handy automated process for converting keyboards. + +### Supported Converters + +Currently the following converters are available: + +| From | To | +|------------|-------------------| +| `promicro` | `proton_c` | +| `promicro` | `kb2040` | +| `promicro` | `promicro_rp2040` | +| `promicro` | `blok` | +| `promicro` | `bit_c_pro` | +| `promicro` | `stemcell` | + +See below for more in depth information on each converter. + +## Overview + +Each converter category is broken down by its declared `pin compatibility`. +This ensures that only valid combinations are attempted. + +You can generate the firmware by appending `-e CONVERT_TO=<target>` to your compile/flash command. For example: + +```sh +qmk flash -c -kb keebio/bdn9/rev1 -km default -e CONVERT_TO=proton_c +``` + +You can also add the same `CONVERT_TO=<target>` to your keymap's `rules.mk`, which will accomplish the same thing. + +?> If you get errors about `PORTB/DDRB`, etc not being defined, you'll need to convert the keyboard's code to use the [GPIO Controls](gpio_control.md) that will work for both ARM and AVR. This shouldn't affect the AVR builds at all. + +### Conditional Configuration + +Once a converter is enabled, it exposes the `CONVERT_TO_<target_uppercase>` flag that you can use in your code with `#ifdef`s, For example: + +```c +#ifdef CONVERT_TO_PROTON_C + // Proton C code +#else + // Pro Micro code +#endif +``` + +## Pro Micro + +If a board currently supported in QMK uses a [Pro Micro](https://www.sparkfun.com/products/12640) (or compatible board), the supported alternative controllers are: + +| Device | Target | +|------------------------------------------------------------------------|-------------------| +| [Proton C](https://qmk.fm/proton-c/) | `proton_c` | +| [Adafruit KB2040](https://learn.adafruit.com/adafruit-kb2040) | `kb2040` | +| [SparkFun Pro Micro - RP2040](https://www.sparkfun.com/products/18288) | `promicro_rp2040` | +| [Blok](https://boardsource.xyz/store/628b95b494dfa308a6581622) | `blok` | +| [Bit-C PRO](https://nullbits.co/bit-c-pro) | `bit_c_pro` | +| [STeMCell](https://github.com/megamind4089/STeMCell) | `stemcell` | + +Converter summary: + +| Target | Argument | `rules.mk` | Condition | +|-------------------|---------------------------------|------------------------------|-------------------------------------| +| `proton_c` | `-e CONVERT_TO=proton_c` | `CONVERT_TO=proton_c` | `#ifdef CONVERT_TO_PROTON_C` | +| `kb2040` | `-e CONVERT_TO=kb2040` | `CONVERT_TO=kb2040` | `#ifdef CONVERT_TO_KB2040` | +| `promicro_rp2040` | `-e CONVERT_TO=promicro_rp2040` | `CONVERT_TO=promicro_rp2040` | `#ifdef CONVERT_TO_PROMICRO_RP2040` | +| `blok` | `-e CONVERT_TO=blok` | `CONVERT_TO=blok` | `#ifdef CONVERT_TO_BLOK` | +| `bit_c_pro` | `-e CONVERT_TO=bit_c_pro` | `CONVERT_TO=bit_c_pro` | `#ifdef CONVERT_TO_BIT_C_PRO` | +| `stemcell` | `-e CONVERT_TO=stemcell` | `CONVERT_TO=stemcell` | `#ifdef CONVERT_TO_STEMCELL` | + +### Proton C :id=proton_c + +The Proton C only has one on-board LED (C13), and by default, the TXLED (D5) is mapped to it. If you want the RXLED (B0) mapped to it instead, add this line to your `config.h`: + +```c +#define CONVERT_TO_PROTON_C_RXLED +``` + +The following defaults are based on what has been implemented for STM32 boards. + +| Feature | Notes | +|----------------------------------------------|------------------------------------------------------------------------------------------------------------------| +| [Audio](feature_audio.md) | Enabled | +| [RGB Lighting](feature_rgblight.md) | Disabled | +| [Backlight](feature_backlight.md) | Forces [task driven PWM](feature_backlight.md#software-pwm-driver) until ARM can provide automatic configuration | +| USB Host (e.g. USB-USB converter) | Not supported (USB host code is AVR specific and is not currently supported on ARM) | +| [Split keyboards](feature_split_keyboard.md) | Partial - heavily dependent on enabled features | + +### Adafruit KB2040 :id=kb2040 + +The following defaults are based on what has been implemented for [RP2040](platformdev_rp2040.md) boards. + +| Feature | Notes | +|----------------------------------------------|------------------------------------------------------------------------------------------------------------------| +| [RGB Lighting](feature_rgblight.md) | Enabled via `PIO` vendor driver | +| [Backlight](feature_backlight.md) | Forces [task driven PWM](feature_backlight.md#software-pwm-driver) until ARM can provide automatic configuration | +| USB Host (e.g. USB-USB converter) | Not supported (USB host code is AVR specific and is not currently supported on ARM) | +| [Split keyboards](feature_split_keyboard.md) | Partial via `PIO` vendor driver - heavily dependent on enabled features | + +### SparkFun Pro Micro - RP2040, Blok, and Bit-C PRO :id=promicro_rp2040 + +Currently identical to [Adafruit KB2040](#kb2040). + +### STeMCell :id=stemcell + +Feature set currently identical to [Proton C](#proton_c). +There are two versions of STeMCell available, with different pinouts: + - v1.0.0 + - v2.0.0 (pre-release v1.0.1, v1.0.2) +Default official firmware only supports v2.0.0 STeMCell. + +STeMCell has support to swap UART and I2C pins, to enable single-wire uart communication in STM chips. + +The following additional flags has to be used while compiling, based on the pin used for split communication. + +| Split Pin | Compile flags | +|-----------|---------------| +| D3 | -e STMC_US=yes| +| D2 | Not needed | +| D1 | -e STMC_IS=yes| +| D0 | Not needed | |