Abstract the HAL to a general folder

Allows shared HAL and easy builds, without generating code for each individual project. Only HAL Conf.h gets regenerated now.

Author: dhairs

VCU/firmware/.mxproject

@@ -3,44 +3,29 @@ load("//:tools/outputs/build_outputs.bzl", "binary_out", "hex_out")
 
 cc_binary(
     name = "vcu_firmware_2026",
-    srcs = glob(
-        [
-            "Core/Src/**/*.c",
-            "Drivers/*HAL_Driver/**/*.c",
-            "Middlewares/**/*.c",
-            "USB_DEVICE/**/*.c",
-            "Core/Inc/**/*.h",
-            "Drivers/**/*.h",
-            "Middlewares/**/*.h",
-            "USB_DEVICE/**/*.h",
-        ],
-
-        allow_empty = True # allows empty globs, so the codebase can grow without refactoring
-    ),
+    srcs = glob([
+        "Core/Src/**/*.c",
+        "Core/Inc/**/*.h",
+    ], allow_empty = True)
+    + [
+        # Include the HAL for compilation
+        "//drivers/stm32g4:hal_srcs",
+    ],
 
     includes = [
         "Core/Inc",
-        "Drivers/STM32G4xx_HAL_Driver/Inc",
-        "Drivers/STM32G4xx_HAL_Driver/Inc/Legacy",
-        "Drivers/CMSIS/Device/ST/STM32G4xx/Include",
-        "Drivers/CMSIS/Include",
-        "USB_DEVICE/App",
-        "USB_DEVICE/Target",
-        "Middlewares/ST/STM32_USB_Device_Library/Core/Inc",
-        "Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc",
-        "Middlewares/Third_Party/FreeRTOS/Source/include",
-        "Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2",
-        "Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM4F",
-        "//longhorn-lib:longhorn_lib"
     ],
 
-    # Linker options
+    deps = [
+        "//drivers/stm32g4:stm32_headers",
+    ],
+
+    # Linker options, also includes the reset handler startup file
     linkopts = [
         "-T $(location //toolchain:stm32g474vetx_flash_script)",
         "$(location //toolchain:stm32g474_startup)",
     ],
 
-    # Defines for the C preprocessor
     defines = [
         "DEBUG",
         "USE_HAL_DRIVER",
@@ -52,7 +37,6 @@ cc_binary(
         "//toolchain:stm32g474_startup",
     ],
 
-    # Target platform constraints
     target_compatible_with = [
         "@platforms//cpu:arm",
         "@platforms//os:none",
@@ -67,6 +51,6 @@ binary_out(
 )
 
 hex_out(
-    name = "vcu_firmare_hex",
+    name = "vcu_firmware_hex",
     src = ":vcu_firmware_2026"
-)
+)

VCU/firmware/BUILD.bazel

@@ -0,0 +1,49 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    gpio.h
+  * @brief   This file contains all the function prototypes for
+  *          the gpio.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __GPIO_H__
+#define __GPIO_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_GPIO_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*__ GPIO_H__ */
+

VCU/firmware/Core/Inc/FreeRTOSConfig.h

@@ -62,7 +62,7 @@
 /*#define HAL_SMBUS_MODULE_ENABLED   */
 /*#define HAL_SPI_MODULE_ENABLED   */
 /*#define HAL_SRAM_MODULE_ENABLED   */
-/*#define HAL_TIM_MODULE_ENABLED   */
+#define HAL_TIM_MODULE_ENABLED
 /*#define HAL_UART_MODULE_ENABLED   */
 /*#define HAL_USART_MODULE_ENABLED   */
 /*#define HAL_WWDG_MODULE_ENABLED   */

VCU/firmware/Core/Inc/gpio.h

@@ -51,7 +51,9 @@ void HardFault_Handler(void);
 void MemManage_Handler(void);
 void BusFault_Handler(void);
 void UsageFault_Handler(void);
+void SVC_Handler(void);
 void DebugMon_Handler(void);
+void PendSV_Handler(void);
 void SysTick_Handler(void);
 /* USER CODE BEGIN EFP */
 

VCU/firmware/Core/Inc/stm32g4xx_hal_conf.h

@@ -0,0 +1,52 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    tim.h
+  * @brief   This file contains all the function prototypes for
+  *          the tim.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __TIM_H__
+#define __TIM_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern TIM_HandleTypeDef htim1;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_TIM1_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __TIM_H__ */
+