/* 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;
}