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| -rw-r--r-- | docs/proton_c_conversion.md | 69 |
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diff --git a/docs/proton_c_conversion.md b/docs/proton_c_conversion.md index dc0a3f4849..98f1508a9e 100644 --- a/docs/proton_c_conversion.md +++ b/docs/proton_c_conversion.md @@ -1,5 +1,9 @@ # Converting a board to use the Proton C +Since the Proton C is a drop-in replacement for a Pro Micro we've made it easy to use. This page documents a handy automated process for converting keyboards, as well as documenting the manual process if you'd like to make use of Proton C features that aren't available on Pro Micros. + +## Automatic Conversion + If a board currently supported in QMK uses a Pro Micro (or compatible board) and you want to use the Proton C, you can generate the firmware by appending `CONVERT_TO_PROTON_C=yes` (or `CTPC=yes`) to your make argument, like this: make 40percentclub/mf68:default CTPC=yes @@ -8,13 +12,15 @@ You can add the same argument to your keymap's `rules.mk`, which will accomplish This exposes the `CONVERT_TO_PROTON_C` flag that you can use in your code with `#ifdef`s, like this: - #ifdef CONVERT_TO_PROTON_C - // Proton C code - #else - // Pro Micro code - #endif +```c +#ifdef CONVERT_TO_PROTON_C + // Proton C code +#else + // Pro Micro code +#endif +``` -Before being able to compile, you may get some errors about `PORTB/DDRB`, etc not being defined, so you'll need to convert the keyboard's code to use the [GPIO Controls](internals_gpio_control.md) that will work for both ARM and AVR. This shouldn't affect the AVR builds at all. +If you get errors about `PORTB/DDRB`, etc not being defined, so you'll need to convert the keyboard's code to use the [GPIO Controls](internals_gpio_control.md) that will work for both ARM and AVR. This shouldn't affect the AVR builds at all. 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 like to your `config.h`: @@ -31,3 +37,54 @@ These are defaults based on what has been implemented for ARM boards. | [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) | Not supported yet | + +## Manual Conversion + +To use the Proton C natively, without having to specify `CTPC=yes`, you need to change the `MCU` line in `rules.mk`: + +``` +MCU = STM32F303 +``` + +Remove these variables if they exist: + +* `BOOTLOADER` +* `EXTRA_FLAGS` + +Finally convert all pin assignments in `config.h` to the stm32 equivalents. + +| Pro Micro Left | Proton C Left | | Proton C Right | Pro Micro Right | +|-----------|----------|-|----------|-----------| +| `D3` | `A9` | | 5v | RAW (5v) | +| `D2` | `A10` | | GND | GND | +| GND | GND | | FLASH | RESET | +| GND | GND | | 3.3v | VCC <sup>1</sup> | +| `D1` | `B7` | | `A2` | `F4` | +| `D0` | `B6` | | `A1` | `F5` | +| `D4` | `B5` | | `A0` | `F6` | +| `C6` | `B4` | | `B8` | `F7` | +| `D7` | `B3` | | `B13` | `B1` | +| `E6` | `B2` | | `B14` | `B3` | +| `B4` | `B1` | | `B15` | `B2` | +| `B5` | `B0` | | `B9` | `B6` | +| `B0` (RX LED) | `C13` <sup>2</sup> | | `C13` <sup>2</sup> | `D5` (TX LED) | + +You can also make use of several new pins on the extended portion of the Proton C: + +| Left | | Right | +|------|-|-------| +| `A4`<sup>3</sup> | | `B10` | +| `A5`<sup>4</sup> | | `B11` | +| `A6` | | `B12` | +| `A7` | | `A14`<sup>5</sup> (SWCLK) | +| `A8` | | `A13`<sup>5</sup> (SWDIO) | +| `A15` | | RESET<sup>6</sup> | + +Notes: + +1. On a Pro Micro VCC can be 3.3v or 5v. +2. A Proton C only has one onboard LED, not two like a Pro Micro. The Pro Micro has an RX LED on `D5` and a TX LED on `B0`. +3. `A4` is shared with the speaker. +4. `A5` is shared with the speaker. +5. `A13` and `A14` are used for hardware debugging (SWD). You can also use them for GPIO, but should use them last. +6. Short RESET to 3.3v (pull high) to reboot the MCU. This does not enter bootloader mode like a Pro Micro, it only resets the MCU. |