实现串口驱动，移植方便

HAL/Src/hal_gpio.c

@@ -0,0 +1,104 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : hal_gpio.c
+  * @brief          : GPIO hardware abstraction layer source file
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+#include "hal_gpio.h"
+#include "stm32f4xx_hal.h"
+
+/**
+ * @brief Convert HAL GPIO port to STM32 GPIO port
+ * @param port: HAL GPIO port
+ * @retval STM32 GPIO port
+ */
+static GPIO_TypeDef* hal_gpio_port_to_stm32(hal_gpio_port_t port) {
+    switch (port) {
+        case HAL_GPIO_PORT_A: return GPIOA;
+        case HAL_GPIO_PORT_B: return GPIOB;
+        case HAL_GPIO_PORT_C: return GPIOC;
+        case HAL_GPIO_PORT_D: return GPIOD;
+        case HAL_GPIO_PORT_E: return GPIOE;
+        case HAL_GPIO_PORT_F: return GPIOF;
+        case HAL_GPIO_PORT_G: return GPIOG;
+        case HAL_GPIO_PORT_H: return GPIOH;
+        case HAL_GPIO_PORT_I: return GPIOI;
+        // case HAL_GPIO_PORT_J: return GPIOJ;
+        // case HAL_GPIO_PORT_K: return GPIOK;
+        default: return NULL;
+    }
+}
+
+/**
+ * @brief Convert HAL GPIO pin to STM32 GPIO pin
+ * @param pin: HAL GPIO pin
+ * @retval STM32 GPIO pin
+ */
+static uint16_t hal_gpio_pin_to_stm32(hal_gpio_pin_t pin) {
+    return (1U << pin);
+}
+
+/**
+ * @brief Convert HAL GPIO state to STM32 GPIO state
+ * @param state: HAL GPIO state
+ * @retval STM32 GPIO state
+ */
+static GPIO_PinState hal_gpio_state_to_stm32(hal_gpio_pin_state_t state) {
+    return (state == HAL_GPIO_PIN_SET) ? GPIO_PIN_SET : GPIO_PIN_RESET;
+}
+
+/**
+ * @brief Initialize GPIO hardware
+ */
+void hal_gpio_init(void) {
+    /* GPIO initialization is handled by BSP layer */
+}
+
+/**
+ * @brief Write GPIO pin state
+ * @param port: GPIO port
+ * @param pin: GPIO pin
+ * @param state: GPIO pin state
+ */
+void hal_gpio_write_pin(hal_gpio_port_t port, hal_gpio_pin_t pin, hal_gpio_pin_state_t state) {
+    GPIO_TypeDef* stm32_port = hal_gpio_port_to_stm32(port);
+    if (stm32_port == NULL) {
+        return;
+    }
+    uint16_t stm32_pin = hal_gpio_pin_to_stm32(pin);
+    GPIO_PinState stm32_state = hal_gpio_state_to_stm32(state);
+    HAL_GPIO_WritePin(stm32_port, stm32_pin, stm32_state);
+}
+
+/**
+ * @brief Toggle GPIO pin state
+ * @param port: GPIO port
+ * @param pin: GPIO pin
+ */
+void hal_gpio_toggle_pin(hal_gpio_port_t port, hal_gpio_pin_t pin) {
+    GPIO_TypeDef* stm32_port = hal_gpio_port_to_stm32(port);
+    if (stm32_port == NULL) {
+        return;
+    }
+    uint16_t stm32_pin = hal_gpio_pin_to_stm32(pin);
+    HAL_GPIO_TogglePin(stm32_port, stm32_pin);
+}
+
+/**
+ * @brief Read GPIO pin state
+ * @param port: GPIO port
+ * @param pin: GPIO pin
+ * @retval GPIO pin state
+ */
+hal_gpio_pin_state_t hal_gpio_read_pin(hal_gpio_port_t port, hal_gpio_pin_t pin) {
+    GPIO_TypeDef* stm32_port = hal_gpio_port_to_stm32(port);
+    if (stm32_port == NULL) {
+        return HAL_GPIO_PIN_RESET;
+    }
+    uint16_t stm32_pin = hal_gpio_pin_to_stm32(pin);
+    GPIO_PinState stm32_state = HAL_GPIO_ReadPin(stm32_port, stm32_pin);
+    return (stm32_state == GPIO_PIN_SET) ? HAL_GPIO_PIN_SET : HAL_GPIO_PIN_RESET;
+}