Update `dactyl_promicro` readme (#21144)

keyboards/handwired/dactyl_promicro/keymaps/default/keymap.c

@@ -1,5 +1,22 @@
-#include QMK_KEYBOARD_H
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
 
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
 
 #define _QWERTY 0
 #define _LOWER 1

keyboards/handwired/dactyl_promicro/readme.md

@@ -1,93 +1,30 @@
-# Dactyl with Arduino Pro Micro
+# Dactyl (Pro Micro)
 
-See https://github.com/adereth/dactyl-keyboard for the original Version.
+![Dactyl](https://i.imgur.com/a7uY1eSh.png)
 
-This Dactyl uses the Arduino Pro Mirco (2x).
-Wiring is a 6x6 Matrix like the [Dactyl Manuform](https://github.com/qmk/qmk_firmware/tree/master/keyboards/handwired/dactyl_manuform)
+A split body, concave shaped key well, columnar keyboard with a 6 key thumb cluster that takes inspiration from the Kinesis Advantage keyboard range. This rendition of the *Dactyl* requires two micro controllers rather than the [original implementation](/keyboards/handwired/dactyl/) of a micro controller and I/O expander.
 
+* Keyboard Maintainer: [Matt Adereth](https://github.com/adereth)
+* Hardware Supported: Pro Micro controller, or clones of
+* Hardware Availability: [GitHub](https://github.com/adereth/dactyl-keyboard)
 
-## Build the Firmware:
+Make example for this keyboard (after setting up your build environment):
 
-  - Build the firmware with `make handwired/dactyl_promicro:<keymapname>`, for example `make handwired/dactyl:default`
-  - This will result in a hex file called `handwired_dactyl_promicro_<keymapname>.hex`, e.g.
-    `handwired_dactyl_promicro_default.hex`
+    make handwired/dactyl_promicro:default
 
-How to setup your build enviroment can be found here: [Installing Build Tools](https://docs.qmk.fm/#/getting_started_build_tools)
+Flashing example for this keyboard:
 
-## Required Hardware
+    make handwired/dactyl_promicro:default:flash
 
-Apart from diodes and key switches for the keyboard matrix in each half, you
-will need:
-
-* 2 Arduino Pro Micros. You can find these on AliExpress for ≈3.50USD each.
-* 2 TRRS sockets and 1 TRRS cable, or 2 TRS sockets and 1 TRS cable
-
-Alternatively, you can use any sort of cable and socket that has at least 3
-wires. If you want to use I2C to communicate between halves, you will need a
-cable with at least 4 wires and 2x 4.7kΩ pull-up resistors
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
 
 ## Optional Hardware
-A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and turned on via `AUDIO_ENABLE`.
-
-## Wiring
-
-The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
-PD0 on the ATmega32u4) between the two Pro Micros.
-
-Next, wire your key matrix to any of the remaining 17 IO pins of the pro micro
-and modify the `matrix.c` accordingly.
-
-The wiring for serial:
-
-![serial wiring](https://i.imgur.com/C3D1GAQ.png)
-
-The wiring for i2c:
-
-![i2c wiring](https://i.imgur.com/Hbzhc6E.png)
-
-The pull-up resistors may be placed on either half. It is also possible
-to use 4 resistors and have the pull-ups in both halves, but this is
-unnecessary in simple use cases.
-
-You can change your configuration between serial and i2c by modifying your `config.h` file.
-
-## Notes on Software Configuration
 
-the keymaps in here are for the 4x5 layout of the keyboard only.
-
-## Flashing
-
-To flash your firmware take a look at: [Flashing Instructions and Bootloader Information](https://docs.qmk.fm/#/flashing).
-
-Under Windows the most convenient way is installing the [QMK Drivers](https://github.com/qmk/qmk_driver_installer/releases) and use the [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases).
-
-
-## Choosing which board to plug the USB cable into (choosing Master)
-
-### Setting the right or left hand as master
-
-If you always plug the usb cable into the right board, add an extra flag to your `config.h`
-```
- #define MASTER_RIGHT
-```
-
-OR
-
-```
- #define MASTER_LEFT
-```
-
-
-Notes on Using Pro Micro 3.3V
------------------------------
+A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and turned on via `AUDIO_ENABLE`.
 
-Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
-the frequency on the 3.3V board.
+## Bootloader
 
-Also, if the slave board is producing weird characters in certain columns,
-update the following line in `matrix.c` to the following:
+Enter the bootloader in 2 ways:
 
-```
-// _delay_us(30);  // without this wait read unstable value.
-_delay_us(300);  // without this wait read unstable value.
-```
+* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available