5 files changed, 138 insertions, 0 deletions
diff --git a/keyboards/bastardkb/scylla/v2/stemcell/config.h b/keyboards/bastardkb/scylla/v2/stemcell/config.h
new file mode 100644
index 0000000000..578e23f40a
--- /dev/null
+++ b/keyboards/bastardkb/scylla/v2/stemcell/config.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2022 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+/* Key matrix configuration. */
+#define MATRIX_ROW_PINS \
+    { F4, F7, C6, D4, B5 }
+#define MATRIX_COL_PINS \
+    { F6, F5, B6, D7, E6, B4 }
+
+/* Handedness. */
+#define MASTER_RIGHT
+
+// To use the handedness pin, resistors need to be installed on the adapter PCB.
+// If so, uncomment the following code, and undefine MASTER_RIGHT above.
+// #define A0 PAL_LINE(GPIOA, 0)
+// #define SPLIT_HAND_PIN A0
+// #define SPLIT_HAND_PIN_LOW_IS_LEFT  // High -> right, Low -> left.
+
+/* serial.c configuration (for split keyboard). */
+#define SOFT_SERIAL_PIN D2
+
+/* RGB settings. */
+#define RGB_DI_PIN D3
+#define WS2812_PWM_DRIVER PWMD2
+#define WS2812_PWM_CHANNEL 4
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA1_STREAM7
+#define WS2812_DMA_CHANNEL 3
+
+/* CRC. */
+#define CRC8_USE_TABLE
+#define CRC8_OPTIMIZE_SPEED
diff --git a/keyboards/bastardkb/scylla/v2/stemcell/halconf.h b/keyboards/bastardkb/scylla/v2/stemcell/halconf.h
new file mode 100644
index 0000000000..dbeb6aeaa0
--- /dev/null
+++ b/keyboards/bastardkb/scylla/v2/stemcell/halconf.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+#define HAL_USE_SERIAL TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/bastardkb/scylla/v2/stemcell/info.json b/keyboards/bastardkb/scylla/v2/stemcell/info.json
new file mode 100644
index 0000000000..46e33a828c
--- /dev/null
+++ b/keyboards/bastardkb/scylla/v2/stemcell/info.json
@@ -0,0 +1,6 @@
+{
+    "keyboard_name": "Scylla STeMCell",
+    "usb": {
+      "device_version": "2.0.0"
+    }
+}
diff --git a/keyboards/bastardkb/scylla/v2/stemcell/mcuconf.h b/keyboards/bastardkb/scylla/v2/stemcell/mcuconf.h
new file mode 100644
index 0000000000..6afebade36
--- /dev/null
+++ b/keyboards/bastardkb/scylla/v2/stemcell/mcuconf.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_SERIAL_USE_USART1
+#define STM32_SERIAL_USE_USART1 FALSE
+
+#undef STM32_PWM_USE_TIM2
+#define STM32_PWM_USE_TIM2 TRUE
+
+#undef STM32_ST_USE_TIMER
+#define STM32_ST_USE_TIMER 5
diff --git a/keyboards/bastardkb/scylla/v2/stemcell/rules.mk b/keyboards/bastardkb/scylla/v2/stemcell/rules.mk
new file mode 100644
index 0000000000..39fc183e1d
--- /dev/null
+++ b/keyboards/bastardkb/scylla/v2/stemcell/rules.mk
@@ -0,0 +1,32 @@
+# MCU name
+MCU = STM32F411
+
+# Bootloader selection
+BOOTLOADER = stm32-dfu
+CONVERT_TO = stemcell
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+
+AUDIO_SUPPORTED = no        # Audio is not supported
+RGB_MATRIX_SUPPORTED = yes  # RGB matrix is supported and enabled by default
+RGBLIGHT_SUPPORTED = yes    # RGB underglow is supported, but not enabled by default
+RGB_MATRIX_ENABLE = yes     # Enable keyboard RGB matrix functionality
+RGB_MATRIX_DRIVER = WS2812
+
+SPLIT_KEYBOARD = yes
+
+SERIAL_DRIVER = usart
+WS2812_DRIVER = pwm
+
+DEBOUNCE_TYPE = asym_eager_defer_pk