[Core] STM32G0x1 support (#24301)

5 files changed, 82 insertions, 0 deletions

diff --git a/keyboards/handwired/onekey/weact_g0b1cb/config.h b/keyboards/handwired/onekey/weact_g0b1cb/config.h
new file mode 100644
index 0000000000..b4550b15f4
--- /dev/null
+++ b/keyboards/handwired/onekey/weact_g0b1cb/config.h
@@ -0,0 +1,28 @@
+// Copyright 2025 Stefan Kerkmann (@karlk90)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define ADC_PIN A0
+
+#define BACKLIGHT_PAL_MODE 1
+#define BACKLIGHT_PWM_CHANNEL 1
+#define BACKLIGHT_PWM_DRIVER PWMD3
+
+#define I2C1_SCL_PAL_MODE 6
+#define I2C1_SDA_PAL_MODE 6
+
+#define LCD_RST_PIN B12
+#define LCD_DC_PIN B11
+#define LCD_CS_PIN B10
+
+#define SPI_MOSI_PAL_MODE 0
+#define SPI_MISO_PAL_MODE 0
+#define SPI_SCK_PAL_MODE 0
+
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_DMA_CHANNEL 2
+#define WS2812_PWM_DMA_STREAM STM32_DMA1_STREAM2
+#define WS2812_PWM_DMAMUX_ID STM32_DMAMUX1_TIM3_UP
+#define WS2812_PWM_DRIVER PWMD3
+#define WS2812_PWM_PAL_MODE 1
diff --git a/keyboards/handwired/onekey/weact_g0b1cb/halconf.h b/keyboards/handwired/onekey/weact_g0b1cb/halconf.h
new file mode 100644
index 0000000000..2d6f87eba2
--- /dev/null
+++ b/keyboards/handwired/onekey/weact_g0b1cb/halconf.h
@@ -0,0 +1,11 @@
+// Copyright 2025 Stefan Kerkmann (@karlk90)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define HAL_USE_ADC TRUE
+#define HAL_USE_I2C TRUE
+#define HAL_USE_PWM TRUE
+#define HAL_USE_SPI TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/handwired/onekey/weact_g0b1cb/keyboard.json b/keyboards/handwired/onekey/weact_g0b1cb/keyboard.json
new file mode 100644
index 0000000000..bb1ce7d5ca
--- /dev/null
+++ b/keyboards/handwired/onekey/weact_g0b1cb/keyboard.json
@@ -0,0 +1,20 @@
+{
+    "keyboard_name": "Onekey WeAct G0B1CB",
+    "processor": "STM32G0B1",
+    "bootloader": "stm32-dfu",
+    "matrix_pins": {
+        "cols": ["B4"],
+        "rows": ["B5"]
+    },
+    "backlight": {
+        "pin": "C6"
+    },
+    "ws2812": {
+        "driver": "pwm",
+        "pin": "B0"
+    },
+    "apa102": {
+        "data_pin": "B15",
+        "clock_pin": "B13"
+    }
+}
diff --git a/keyboards/handwired/onekey/weact_g0b1cb/mcuconf.h b/keyboards/handwired/onekey/weact_g0b1cb/mcuconf.h
new file mode 100644
index 0000000000..50f2bcf627
--- /dev/null
+++ b/keyboards/handwired/onekey/weact_g0b1cb/mcuconf.h
@@ -0,0 +1,18 @@
+// Copyright 2025 Stefan Kerkmann (@karlk90)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_ADC_USE_ADC1
+#define STM32_ADC_USE_ADC1 TRUE
+
+#undef STM32_PWM_USE_TIM3
+#define STM32_PWM_USE_TIM3 TRUE
+
+#undef STM32_I2C_USE_I2C1
+#define STM32_I2C_USE_I2C1 TRUE
+
+#undef STM32_SPI_USE_SPI2
+#define STM32_SPI_USE_SPI2 TRUE
diff --git a/keyboards/handwired/onekey/weact_g0b1cb/readme.md b/keyboards/handwired/onekey/weact_g0b1cb/readme.md
new file mode 100644
index 0000000000..4119ffa2ed
--- /dev/null
+++ b/keyboards/handwired/onekey/weact_g0b1cb/readme.md
@@ -0,0 +1,5 @@
+# WeAct Studio STM32G0B1CB onekey
+
+Supported Hardware: <https://github.com/WeActStudio/WeActStudio.STM32G0B1CoreBoard>
+
+To trigger keypress, short together pins *B4* and *B5*.