[Keymap] Drashna updates for 0.19 (#19175)

* Fix up bastardkb boards since blackpill support is officially added.
  * Check for blackpill version, not elite c.
  * Add checks in chibiOS config since multiple ARM controllers supported.
  * Rework rules.mk for keymaps to better handle arm vs avr support
* Start moving away from `matrix_*_*` functions.
  * `housekeeping_task_*` instead of `matrix_scan_*`
  * `keyboard_(pre|post)_init_*` instead of `matrix_init_*` 
* Add ℂℴmⅈℂ unicode input method.
* Clean up unicode code to be more compact and flexible.
* Remove/move Pro Micro LED commands to userspace and better filter them
* Fixup OLED code
  * Use newer quantum keycode functions/preprocessors rather than manual bit manipulation
  * Make unicode mode render much more compact/simple.
* Make qmk secrets more self contained
* Remove custom implementation of split watchdog

10 files changed, 238 insertions, 271 deletions

diff --git a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/config.h b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/config.h
index ad549a5e22..514a153623 100644
--- a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/config.h
+++ b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/config.h
@@ -18,87 +18,90 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#undef PRODUCT
-#define PRODUCT "Charybdis Nano (Blackpill)"
-
-#undef MATRIX_ROW_PINS
-#define MATRIX_ROW_PINS \
-    { B12, B13, B14, B15 }
-#undef MATRIX_COL_PINS
-#define MATRIX_COL_PINS \
-    { A15, B3, B4, B5, B6 }
-
-
-#undef MATRIX_ROW_PINS_RIGHT
-#define MATRIX_ROW_PINS_RIGHT \
-    { B12, B13, B14, B15 }
-#undef MATRIX_COL_PINS_RIGHT
-#define MATRIX_COL_PINS_RIGHT \
-    { A15, B3, B4, B5, B6 }
-
-#define USB_VBUS_PIN        B10
-#define SPLIT_HAND_PIN      C14  // high = left, low = right
+#ifdef KEYBOARD_bastardkb_charybdis_3x5_blackpill
+
+#    undef MATRIX_ROW_PINS
+#    define MATRIX_ROW_PINS \
+        { B12, B13, B14, B15 }
+#    undef MATRIX_COL_PINS
+#    define MATRIX_COL_PINS \
+        { A15, B3, B4, B5, B6 }
+
+#    undef MATRIX_ROW_PINS_RIGHT
+#    define MATRIX_ROW_PINS_RIGHT \
+        { B12, B13, B14, B15 }
+#    undef MATRIX_COL_PINS_RIGHT
+#    define MATRIX_COL_PINS_RIGHT \
+        { A15, B3, B4, B5, B6 }
+
+#    define USB_VBUS_PIN B10
+#    undef SPLIT_HAND_PIN
+#    define SPLIT_HAND_PIN C14 // high = left, low = right
 
 // WS2812 RGB LED strip input and number of LEDs
-#undef RGB_DI_PIN
-#define RGB_DI_PIN          A1
-#undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
-#define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150
-#define WS2812_PWM_DRIVER   PWMD2  // default: PWMD2
-#define WS2812_PWM_CHANNEL  2      // default: 2
-#define WS2812_PWM_PAL_MODE 1      // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 2
-#define WS2812_EXTERNAL_PULLUP
+#    undef RGB_DI_PIN
+#    define RGB_DI_PIN A1
+#    undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150
+#    define WS2812_PWM_DRIVER PWMD2 // default: PWMD2
+#    define WS2812_PWM_CHANNEL 2    // default: 2
+#    define WS2812_PWM_PAL_MODE 1   // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 2
+#    define WS2812_EXTERNAL_PULLUP
 //#define WS2812_PWM_COMPLEMENTARY_OUTPUT // Define for a complementary timer output (TIMx_CHyN); omit for a normal timer output (TIMx_CHy).
-#define WS2812_DMA_STREAM   STM32_DMA1_STREAM7  // DMA Stream for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
-#define WS2812_DMA_CHANNEL  3                   // DMA Channel for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
-#define WS2812_PWM_TARGET_PERIOD 800000
+#    undef WS2812_DMA_STREAM
+#    define WS2812_DMA_STREAM STM32_DMA1_STREAM7 // DMA Stream for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
+#    define WS2812_DMA_CHANNEL 3                 // DMA Channel for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
+#    define WS2812_PWM_TARGET_PERIOD 800000
 
-#define DEBUG_LED_PIN     C13
+#    define DEBUG_LED_PIN C13
 
 /* Audio config */
-#define AUDIO_PIN          B1
-#define AUDIO_PWM_DRIVER   PWMD3
-#define AUDIO_PWM_CHANNEL  4
-#define AUDIO_PWM_PAL_MODE 2
+#    define AUDIO_PIN B1
+#    define AUDIO_PWM_DRIVER PWMD3
+#    define AUDIO_PWM_CHANNEL 4
+#    define AUDIO_PWM_PAL_MODE 2
 
 /* serial.c configuration for split keyboard */
-#undef SOFT_SERIAL_PIN
-#define SERIAL_USART_FULL_DUPLEX  // Enable full duplex operation mode.
-#define SERIAL_USART_TX_PIN      A2
-#define SERIAL_USART_RX_PIN      A3
-#define SERIAL_USART_DRIVER      SD2
-#define SERIAL_USART_TX_PAL_MODE 7    // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-#define SERIAL_USART_RX_PAL_MODE 7    // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-#define SERIAL_USART_TIMEOUT     100  // USART driver timeout. default 100
-#define SERIAL_USART_SPEED       921600
+#    undef SOFT_SERIAL_PIN
+#    define SERIAL_USART_FULL_DUPLEX // Enable full duplex operation mode.
+#    undef SERIAL_USART_TX_PIN
+#    define SERIAL_USART_TX_PIN A2
+#    undef SERIAL_USART_RX_PIN
+#    define SERIAL_USART_RX_PIN A3
+#    define SERIAL_USART_DRIVER SD2
+#    define SERIAL_USART_TX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
+#    define SERIAL_USART_RX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
+#    define SERIAL_USART_TIMEOUT 100   // USART driver timeout. default 100
+#    define SERIAL_USART_SPEED 921600
 // #define SERIAL_USART_PIN_SWAP // swap RX and TX pins on master
 // To use the highest possible baudrate (3.75Mbit/s) uncomment the following
 // line, this can result in dropped communications so lower the speed if there
 // are many timeouts.
 // #define SERIAL_USART_SPEED (STM32_PCLK2 >> 4)
 
-#define CRC8_USE_TABLE
-#define CRC8_OPTIMIZE_SPEED
+#    define CRC8_USE_TABLE
+#    define CRC8_OPTIMIZE_SPEED
 
 /* spi config for eeprom and pmw3360 sensor */
-#define SPI_DRIVER                           SPID1
-#define SPI_SCK_PIN                          A5
-#define SPI_SCK_PAL_MODE                     5
-#define SPI_MOSI_PIN                         A7
-#define SPI_MOSI_PAL_MODE                    5
-#define SPI_MISO_PIN                         A6
-#define SPI_MISO_PAL_MODE                    5
+#    define SPI_DRIVER SPID1
+#    define SPI_SCK_PIN A5
+#    define SPI_SCK_PAL_MODE 5
+#    define SPI_MOSI_PIN A7
+#    define SPI_MOSI_PAL_MODE 5
+#    define SPI_MISO_PIN A6
+#    define SPI_MISO_PAL_MODE 5
 
 /* eeprom config */
-#define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN A4
-#define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR    64
+#    define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN A4
+#    define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 64
 // #define EXTERNAL_EEPROM_BYTE_COUNT           8196
 // #define EXTERNAL_EEPROM_PAGE_SIZE            32
 // #define EXTERNAL_EEPROM_ADDRESS_SIZE         2
 
 /* pmw3360 config  */
-#undef PMW33XX_CS_PIN
-#define PMW33XX_CS_PIN                       B0
+#    undef PMW33XX_CS_PIN
+#    define PMW33XX_CS_PIN B0
+#endif
 
 #define CHARYBDIS_MINIMUM_DEFAULT_DPI 1200
 #define CHARYBDIS_DEFAULT_DPI_CONFIG_STEP 400
diff --git a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/halconf.h b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/halconf.h
index bc07c10527..3b254172b4 100644
--- a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/halconf.h
+++ b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/halconf.h
@@ -15,11 +15,13 @@
  */
 #pragma once
 
-#define HAL_USE_PWM     TRUE
-#define HAL_USE_SERIAL  TRUE
-#define HAL_USE_I2C     TRUE
-#define HAL_USE_SPI     TRUE
-#define SPI_USE_WAIT    TRUE
-#define SPI_SELECT_MODE SPI_SELECT_MODE_PAD
+#if defined(KEYBOARD_bastardkb_charybdis_3x5_blackpill)
+#    define HAL_USE_PWM TRUE
+#    define HAL_USE_SERIAL TRUE
+#    define HAL_USE_I2C TRUE
+#    define HAL_USE_SPI TRUE
+#    define SPI_USE_WAIT TRUE
+#    define SPI_SELECT_MODE SPI_SELECT_MODE_PAD
+#endif
 
 #include_next <halconf.h>
diff --git a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/keymap.c b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/keymap.c
index a923a80b40..02cb89fe65 100644
--- a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/keymap.c
+++ b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/keymap.c
@@ -83,24 +83,28 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 };
 
-void matrix_init_keyemap(void) { setPinInputHigh(A0); }
+#if defined(KEYBOARD_bastardkb_charybdis_3x5_blackpill)
+void keyboard_pre_init_keymap(void) {
+    setPinInputHigh(A0);
+}
 
-void matrix_scan_keymap(void) {
+void housekeeping_task_keymap(void) {
     if (!readPin(A0)) {
         reset_keyboard();
     }
 }
 
-#ifdef USB_VBUS_PIN
+#    ifdef USB_VBUS_PIN
 bool usb_vbus_state(void) {
     setPinInputLow(USB_VBUS_PIN);
     wait_us(5);
     return readPin(USB_VBUS_PIN);
 }
-#endif
+#    endif
 
 void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
     for (int32_t i = 0; i < 40; i++) {
         __asm__ volatile("nop" ::: "memory");
     }
 }
+#endif
diff --git a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/mcuconf.h b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/mcuconf.h
index fd71b54b77..9c40967015 100644
--- a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/mcuconf.h
+++ b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/mcuconf.h
@@ -18,25 +18,27 @@
 
 #include_next "mcuconf.h"
 
-#undef STM32_I2C_USE_I2C1
-#define STM32_I2C_USE_I2C1 TRUE
+#if defined(KEYBOARD_bastardkb_charybdis_3x5_blackpill)
+#    undef STM32_I2C_USE_I2C1
+#    define STM32_I2C_USE_I2C1 TRUE
 
 // #undef STM32_I2C_I2C1_RX_DMA_STREAM
 // #define STM32_I2C_I2C1_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
-#undef STM32_I2C_I2C1_TX_DMA_STREAM
-#define STM32_I2C_I2C1_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 1)
+#    undef STM32_I2C_I2C1_TX_DMA_STREAM
+#    define STM32_I2C_I2C1_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 1)
 
-#undef STM32_PWM_USE_TIM2
-#define STM32_PWM_USE_TIM2 TRUE
+#    undef STM32_PWM_USE_TIM2
+#    define STM32_PWM_USE_TIM2 TRUE
 
-#undef STM32_PWM_USE_TIM3
-#define STM32_PWM_USE_TIM3 TRUE
+#    undef STM32_PWM_USE_TIM3
+#    define STM32_PWM_USE_TIM3 TRUE
 
-#undef STM32_SPI_USE_SPI1
-#define STM32_SPI_USE_SPI1           TRUE
+#    undef STM32_SPI_USE_SPI1
+#    define STM32_SPI_USE_SPI1 TRUE
 
-#undef STM32_SERIAL_USE_USART2
-#define STM32_SERIAL_USE_USART2 TRUE
+#    undef STM32_SERIAL_USE_USART2
+#    define STM32_SERIAL_USE_USART2 TRUE
 
-#undef STM32_ST_USE_TIMER
-#define STM32_ST_USE_TIMER 5
+#    undef STM32_ST_USE_TIMER
+#    define STM32_ST_USE_TIMER 5
+#endif
diff --git a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/rules.mk b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/rules.mk
index dc0395c800..ff4ede45ca 100644
--- a/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/rules.mk
+++ b/keyboards/bastardkb/charybdis/3x5/keymaps/drashna/rules.mk
@@ -1,28 +1,45 @@
-# MCU name
-MCU = STM32F411
-BOARD = BLACKPILL_STM32_F411
+RGB_MATRIX_ENABLE = no
+CUSTOM_UNICODE_ENABLE = no
+CUSTOM_POINTING_DEVICE = no
+CUSTOM_SPLIT_TRANSPORT_SYNC = no
 
-# Bootloader selection
-# BOOTLOADER = stm32-dfu
-BOOTLOADER := tinyuf2
 
-LTO_ENABLE := no
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/3x5/blackpill)
+    # Bootloader selection
+    BOOTLOADER := tinyuf2
 
-BOOTMAGIC_ENABLE = yes     # Enable Bootmagic Lite
-KEYBOARD_SHARED_EP = yes
-MOUSE_SHARED_EP = yes
+    LTO_ENABLE := no
 
-EEPROM_DRIVER = spi
-WS2812_DRIVER = pwm
-SERIAL_DRIVER = usart
-AUDIO_DRIVER = pwm_hardware
+    AUDIO_SUPPORTED = yes
+    AUDIO_ENABLE = yes
+    AUDIO_DRIVER = pwm_hardware
 
-AUDIO_SUPPORTED = yes
-AUDIO_ENABLE = yes
-MOUSEKEY_ENABLE = yes
-NKRO_ENABLE = yes
-CONSOLE_ENABLE = yes
+    OVERLOAD_FEATURES = yes
+endif
 
-AUTOCORRECT_ENABLE = yes
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/3x5/v2/stemcell)
+    OVERLOAD_FEATURES = yes
+endif
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/3x5/v2/splinky)
+    OVERLOAD_FEATURES = yes
+endif
 
-DEBOUNCE_TYPE = asym_eager_defer_pk
+
+ifeq ($(strip $(OVERLOAD_FEATURES)), yes)
+    BOOTMAGIC_ENABLE = yes     # Enable Bootmagic Lite
+    KEYBOARD_SHARED_EP = yes
+    MOUSE_SHARED_EP = yes
+
+    MOUSEKEY_ENABLE = yes
+    NKRO_ENABLE = yes
+    CONSOLE_ENABLE = yes
+    RGB_MATRIX_ENABLE = yes
+
+    AUTOCORRECT_ENABLE = yes
+
+    CUSTOM_UNICODE_ENABLE = yes
+    CUSTOM_POINTING_DEVICE = yes
+    CUSTOM_SPLIT_TRANSPORT_SYNC = yes
+
+    DEBOUNCE_TYPE = asym_eager_defer_pk
+endif
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/config.h b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/config.h
index e29ff644da..cb11ea2748 100644
--- a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/config.h
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/config.h
@@ -16,99 +16,49 @@
  */
 #pragma once
 
-#undef PRODUCT
-#define PRODUCT "Charybdis (4x6) Blackpill"
+#if defined(KEYBOARD_bastardkb_charybdis_4x6_blackpill)
+#    undef MATRIX_COL_PINS
+#    define MATRIX_COL_PINS \
+        { B0, B1, B12, B3, B4, B5 }
 
-#undef MATRIX_COL_PINS
-#define MATRIX_COL_PINS \
-    { B0, B1, B12, B3, B4, B5 }
-#undef MATRIX_COL_PINS_RIGHT
-#define MATRIX_COL_PINS_RIGHT \
-    { B0, B1, B12, B3, B4, B5 }
+#    define USB_VBUS_PIN B10
+#    define DEBUG_LED_PIN C13
 
-#undef MATRIX_ROW_PINS
-#define MATRIX_ROW_PINS \
-    { B15, A2, B8, A8, B9 }
-#undef MATRIX_ROW_PINS_RIGHT
-#define MATRIX_ROW_PINS_RIGHT \
-    { B15, A2, B8, A8, B9 }
+#    define AUDIO_PIN B7
+#    define AUDIO_PWM_DRIVER PWMD4
+#    define AUDIO_PWM_CHANNEL 2
+#    define AUDIO_PWM_PAL_MODE 2
+#    define AUDIO_INIT_DELAY
+#    define AUDIO_ENABLE_TONE_MULTIPLEXING
+#    define AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT 10
 
+#    define SERIAL_USART_SPEED (1 * 1024 * 1024)
 
-#define DIODE_DIRECTION ROW2COL
-#define SPLIT_HAND_PIN A3
-#undef MASTER_RIGHT
-#define USB_VBUS_PIN B10
+#    undef POINTING_DEVICE_CS_PIN
+#    define POINTING_DEVICE_CS_PIN A15 // b14
+#    define PMW33XX_LIFTOFF_DISTANCE 0b1111
+#endif
 
-#undef RGB_DI_PIN
-#define RGB_DI_PIN A1
-#define WS2812_EXTERNAL_PULLUP
-#define WS2812_PWM_DRIVER PWMD2
-#define WS2812_PWM_CHANNEL 2
-#define WS2812_PWM_PAL_MODE 1
-#define WS2812_EXTERNAL_PULLUP
-#define WS2812_DMA_STREAM STM32_DMA1_STREAM1
-#define WS2812_DMA_CHANNEL 3
-#define WS2812_PWM_TARGET_PERIOD 800000
-
-#define DEBUG_LED_PIN     C13
-
-#define AUDIO_PIN          B7
-#define AUDIO_PWM_DRIVER   PWMD4
-#define AUDIO_PWM_CHANNEL  2
-#define AUDIO_PWM_PAL_MODE 2
-#define AUDIO_INIT_DELAY
-#define AUDIO_ENABLE_TONE_MULTIPLEXING
-#define AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT 10
-
-#undef SOFT_SERIAL_PIN
-// #define SERIAL_USART_FULL_DUPLEX  // Enable full duplex operation mode.
-#define SERIAL_USART_TX_PIN      A9
-// #define SERIAL_USART_RX_PIN      A3
-// #define SERIAL_USART_DRIVER      SD2
-// #define SERIAL_USART_TX_PAL_MODE 7    // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-// #define SERIAL_USART_RX_PAL_MODE 7    // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-// #define SERIAL_USART_TIMEOUT     100  // USART driver timeout. default 100
-// #define SERIAL_USART_SPEED       921600
-#define SERIAL_USART_SPEED (1.5 * 1024 * 1024)
-
-#define CRC8_USE_TABLE
-#define CRC8_OPTIMIZE_SPEED
-
-/* spi config for eeprom and pmw3360 sensor */
-#define SPI_DRIVER                           SPID1
-#define SPI_SCK_PIN                          A5
-#define SPI_SCK_PAL_MODE                     5
-#define SPI_MOSI_PIN                         A7
-#define SPI_MOSI_PAL_MODE                    5
-#define SPI_MISO_PIN                         A6
-#define SPI_MISO_PAL_MODE                    5
-
-#define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN A4
-#define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR    64
-
-#undef PMW33XX_CS_PIN
-#define PMW33XX_CS_PIN                       A15  // b14
-#define PMW33XX_LIFTOFF_DISTANCE 0b1111
 #undef ROTATIONAL_TRANSFORM_ANGLE
-#define ROTATIONAL_TRANSFORM_ANGLE -65
-
-#define CHARYBDIS_MINIMUM_DEFAULT_DPI     1200
-#define CHARYBDIS_DEFAULT_DPI_CONFIG_STEP 400
-#define CHARYBDIS_MINIMUM_SNIPING_DPI     200
-#define CHARYBDIS_SNIPING_DPI_CONFIG_STEP 100
+#define ROTATIONAL_TRANSFORM_ANGLE 25
+#define POINTING_DEVICE_ROTATION_270
 
 /* RGB Matrix. */
-
 #undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
 #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150
 
+#define CHARYBDIS_MINIMUM_DEFAULT_DPI 1200
+#define CHARYBDIS_DEFAULT_DPI_CONFIG_STEP 400
+#define CHARYBDIS_MINIMUM_SNIPING_DPI 200
+#define CHARYBDIS_SNIPING_DPI_CONFIG_STEP 100
+
 #define CHARYBDIS_CONFIG_SYNC
 
-#define BOOTMAGIC_LITE_ROW    0
+#define BOOTMAGIC_LITE_ROW 0
 #define BOOTMAGIC_LITE_COLUMN 0
-#define BOOTMAGIC_LITE_ROW_RIGHT    5
+#define BOOTMAGIC_LITE_ROW_RIGHT 5
 #define BOOTMAGIC_LITE_COLUMN_RIGHT 0
-#define BOOTMAGIC_LITE_EEPROM_ROW    1
+#define BOOTMAGIC_LITE_EEPROM_ROW 1
 #define BOOTMAGIC_LITE_EEPROM_COLUMN 0
-#define BOOTMAGIC_LITE_EEPROM_ROW_RIGHT    1
+#define BOOTMAGIC_LITE_EEPROM_ROW_RIGHT 1
 #define BOOTMAGIC_LITE_EEPROM_COLUMN_RIGHT 0
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/halconf.h b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/halconf.h
deleted file mode 100644
index 8aad829e5c..0000000000
--- a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/halconf.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/* Copyright 2020 Nick Brassel (tzarc)
- *
- *  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 3 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 <https://www.gnu.org/licenses/>.
- */
-#pragma once
-
-#define HAL_USE_PWM     TRUE
-#define HAL_USE_PAL     TRUE
-#define HAL_USE_SERIAL  TRUE
-// #define HAL_USE_I2C     TRUE
-#define HAL_USE_SPI     TRUE
-#define SPI_USE_WAIT    TRUE
-#define SPI_SELECT_MODE SPI_SELECT_MODE_PAD
-
-#include_next <halconf.h>
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/keymap.c b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/keymap.c
index cc6dbc34e9..50a05e1b35 100644
--- a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/keymap.c
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/keymap.c
@@ -83,12 +83,12 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
                                SFT_T(KC_SPACE),  ALT_T(KC_Q),      _______
     ),
     [_MOUSE] = LAYOUT_charybdis_4x6(
-        _______, _______, _______, _______, _______, _______,   _______, _______, _______, _______, _______, _______,
-        _______, _______, _______, _______, _______, _______,   KC_WH_U, DPI_RMOD,DPI_MOD, S_D_RMOD,S_D_MOD, _______,
+        _______, _______, _______, _______, _______, _______,   _______, DPI_RMOD,DPI_MOD, S_D_RMOD,S_D_MOD, _______,
+        _______, _______, _______, _______, _______, _______,   KC_WH_U, _______, _______, _______, _______, DRGSCRL,
         _______, _______, _______, _______, _______, _______,   KC_WH_D, KC_BTN1, KC_BTN3, KC_BTN2, KC_BTN6, SNIPING,
-        _______, _______, _______, _______, _______, _______,   KC_BTN7, KC_BTN4, KC_BTN5, KC_BTN8, DRGSCRL, _______,
-                                   _______, SNIPING, SNIPING,    _______, _______,
-                                           _______, _______,      _______
+        _______, _______, _______, _______, _______, _______,   KC_BTN7, KC_BTN4, KC_BTN5, KC_BTN8, _______, _______,
+                                   _______, _______, _______,   _______, _______,
+                                           _______, _______,     _______
     ),
 
     [_LOWER] = LAYOUT_charybdis_4x6_wrapper(
@@ -110,7 +110,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 
     [_ADJUST] = LAYOUT_charybdis_4x6_wrapper(
-        QK_MAKE, KC_WIDE,KC_AUSSIE,KC_SCRIPT,KC_ZALGO,KC_SUPER, KC_NOMODE,KC_BLOCKS,KC_REGIONAL,TG_GAME,TG_DBLO, QK_BOOT,
+        QK_MAKE, KC_WIDE,KC_AUSSIE,KC_SCRIPT,KC_ZALGO,KC_SUPER, KC_NOMODE,KC_COMIC,KC_REGIONAL,TG_GAME,TG_DBLO, QK_BOOT,
         VRSN,    _________________ADJUST_L1_________________,    _________________ADJUST_R1_________________, EE_CLR,
         KEYLOCK, _________________ADJUST_L2_________________,    _________________ADJUST_R2_________________, TG_MODS,
         UC_NEXT, _________________ADJUST_L3_________________,    _________________ADJUST_R3_________________, KC_MPLY,
@@ -121,8 +121,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 // clang-format on
 
 
-void matrix_init_keymap(void) {
-    setPinInputHigh(A0);
+void keyboard_post_init_keymap(void) {
 #ifdef RGB_MATRIX_ENABLE
      g_led_config.flags[53] = g_led_config.flags[54] = g_led_config.flags[55] =
         g_led_config.flags[0] = g_led_config.flags[1] = g_led_config.flags[2] = g_led_config.flags[3] =
@@ -131,11 +130,17 @@ void matrix_init_keymap(void) {
 #endif
 }
 
-void matrix_scan_keymap(void) {
+#if defined(KEYBOARD_bastardkb_charybdis_4x6_blackpill)
+void keyboard_pre_init_keymap(void) {
+    setPinInputHigh(A0);
+}
+
+void housekeeping_task_keymap(void) {
     if (!readPin(A0)) {
         reset_keyboard();
     }
 }
+#endif
 
 #ifdef USB_VBUS_PIN
 bool usb_vbus_state(void) {
@@ -145,12 +150,13 @@ bool usb_vbus_state(void) {
 }
 #endif
 
+#if defined(KEYBOARD_bastardkb_charybdis_4x6_blackpill)
 void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
     for (int32_t i = 0; i < 40; i++) {
         __asm__ volatile("nop" ::: "memory");
     }
 }
-
+#endif
 
 #ifdef SWAP_HANDS_ENABLE
 const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/mcuconf.h b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/mcuconf.h
index 4f04811e54..3a23d5f370 100644
--- a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/mcuconf.h
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/mcuconf.h
@@ -18,23 +18,10 @@
 
 #include_next "mcuconf.h"
 
-#undef STM32_PWM_USE_ADVANCED
-#define STM32_PWM_USE_ADVANCED TRUE
+#if defined(KEYBOARD_bastardkb_charybdis_4x6_blackpill)
+#    undef STM32_PWM_USE_ADVANCED
+#    define STM32_PWM_USE_ADVANCED TRUE
 
-#undef STM32_PWM_USE_TIM1
-#define STM32_PWM_USE_TIM1 TRUE
-
-#undef STM32_PWM_USE_TIM2
-#define STM32_PWM_USE_TIM2 TRUE
-
-#undef STM32_PWM_USE_TIM4
-#define STM32_PWM_USE_TIM4 TRUE
-
-#undef STM32_SPI_USE_SPI1
-#define STM32_SPI_USE_SPI1 TRUE
-
-#undef STM32_SERIAL_USE_USART1
-#define STM32_SERIAL_USE_USART1 TRUE
-
-#undef STM32_ST_USE_TIMER
-#define STM32_ST_USE_TIMER 5
+#    undef STM32_PWM_USE_TIM4
+#    define STM32_PWM_USE_TIM4 TRUE
+#endif
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/rules.mk b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/rules.mk
index d655fbd5dc..12e9cecda0 100644
--- a/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/rules.mk
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/drashna/rules.mk
@@ -1,34 +1,56 @@
-# MCU name
-MCU = STM32F411
-BOARD = BLACKPILL_STM32_F411
-
-# Bootloader selection
-BOOTLOADER := tinyuf2
-
-BOOTMAGIC_ENABLE      = yes # Enable Bootmagic Lite
-MOUSEKEY_ENABLE       = yes # Mouse keys
-EXTRAKEY_ENABLE       = yes # Audio control and System control
-CONSOLE_ENABLE        = yes # Console for debug
-COMMAND_ENABLE        = no  # Commands for debug and configuration
-NKRO_ENABLE           = yes # Enable N-Key Rollover
-RGBLIGHT_ENABLE       = no  # Enable keyboard RGB underglow
-AUDIO_ENABLE          = yes # Audio output
-AUDIO_SUPPORTED       = yes # is set to no in kb, needs to be forcibly enabled
-
-KEYBOARD_SHARED_EP    = yes
-MOUSE_SHARED_EP       = yes
-
-EEPROM_DRIVER         = spi
-WS2812_DRIVER         = pwm
-SERIAL_DRIVER         = usart
-AUDIO_DRIVER          = pwm_hardware
-BACKLIGHT_DRIVER      = pwm
-
-AUTOCORRECT_ENABLE = yes
-CAPS_WORD_ENABLE      = yes
-SWAP_HANDS_ENABLE     = yes
-TAP_DANCE_ENABLE      = yes
-DEBOUNCE_TYPE         = asym_eager_defer_pk
-WPM_ENABLE            = yes
-LTO_ENABLE            = no
-# OPT                   = 3
+CUSTOM_UNICODE_ENABLE = no
+CUSTOM_POINTING_DEVICE = no
+CUSTOM_SPLIT_TRANSPORT_SYNC = no
+
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/4x6/blackpill)
+    # MCU name
+    # Bootloader selection
+    BOOTLOADER := tinyuf2
+
+    AUDIO_ENABLE          = yes # Audio output
+    AUDIO_SUPPORTED       = yes # is set to no in kb, needs to be forcibly enabled
+    AUDIO_DRIVER          = pwm_hardware
+
+    BACKLIGHT_DRIVER      = pwm
+
+    OVERLOAD_FEATURES = yes
+endif
+
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/4x6/v2/stemcell)
+    OVERLOAD_FEATURES = yes
+endif
+ifeq ($(strip $(KEYBOARD)), bastardkb/charybdis/4x6/v2/splinky)
+    OVERLOAD_FEATURES = yes
+endif
+ifeq ($(strip $(MCU)), atmega32u4)
+    LTO_ENABLE = yes
+    BOOTLOADER = qmk-hid
+    BOOTLOADER_SIZE = 512
+endif
+
+ifeq ($(strip $(OVERLOAD_FEATURES)), yes)
+    BOOTMAGIC_ENABLE      = yes # Enable Bootmagic Lite
+    MOUSEKEY_ENABLE       = yes # Mouse keys
+    EXTRAKEY_ENABLE       = yes # Audio control and System control
+    CONSOLE_ENABLE        = yes # Console for debug
+    COMMAND_ENABLE        = no  # Commands for debug and configuration
+    NKRO_ENABLE           = yes # Enable N-Key Rollover
+    RGBLIGHT_ENABLE       = no  # Enable keyboard RGB underglow
+
+    KEYBOARD_SHARED_EP    = yes
+    MOUSE_SHARED_EP       = yes
+
+    AUTOCORRECT_ENABLE    = yes
+    CAPS_WORD_ENABLE      = yes
+    SWAP_HANDS_ENABLE     = yes
+    TAP_DANCE_ENABLE      = yes
+    DEBOUNCE_TYPE         = asym_eager_defer_pk
+    WPM_ENABLE            = yes
+    LTO_ENABLE            = no
+    # OPT                   = 3
+
+    CUSTOM_UNICODE_ENABLE = yes
+    CUSTOM_POINTING_DEVICE = yes
+    CUSTOM_SPLIT_TRANSPORT_SYNC = yes
+
+endif