优化整定，DHCP有问题待优化

drivers/hal/hal.h

@@ -0,0 +1,74 @@
+/*
+ * 硬件抽象层通用接口
+ * 功能：定义硬件抽象层的通用接口，包括串口、I2C和以太网驱动
+ * 依赖硬件：STM32F407VE
+ * 跨平台适配点：通过不同平台的实现文件适配不同硬件
+ */
+
+#ifndef HAL_H
+#define HAL_H
+
+#include <stdint.h>
+#include "osal.h"
+
+/* 硬件抽象层错误码 */
+typedef enum {
+    HAL_STATUS_OK = 0,
+    HAL_STATUS_ERROR = -1,
+    HAL_STATUS_BUSY = -2,
+    HAL_STATUS_TIMEOUT = -3
+} hal_status_t;
+
+/* 串口波特率定义 */
+typedef enum {
+    HAL_UART_BAUDRATE_9600 = 9600,
+    HAL_UART_BAUDRATE_115200 = 115200,
+    HAL_UART_BAUDRATE_460800 = 460800,
+    HAL_UART_BAUDRATE_921600 = 921600
+} hal_uart_baudrate_t;
+
+/* I2C时钟速度定义 */
+typedef enum {
+    HAL_I2C_CLOCK_SPEED_100K = 100000,
+    HAL_I2C_CLOCK_SPEED_400K = 400000
+} hal_i2c_clock_speed_t;
+
+/* 串口硬件抽象层接口 */
+typedef struct {
+    hal_status_t (*init)(hal_uart_baudrate_t baudrate);
+    hal_status_t (*deinit)(void);
+    hal_status_t (*send)(const uint8_t *data, uint32_t len);
+    hal_status_t (*recv)(uint8_t *data, uint32_t len, uint32_t timeout);
+} hal_uart_ops_t;
+
+/* I2C硬件抽象层接口 */
+typedef struct {
+    hal_status_t (*init)(hal_i2c_clock_speed_t clock_speed);
+    hal_status_t (*deinit)(void);
+    hal_status_t (*master_transmit)(uint16_t dev_addr, const uint8_t *data, uint32_t len, uint32_t timeout);
+    hal_status_t (*master_receive)(uint16_t dev_addr, uint8_t *data, uint32_t len, uint32_t timeout);
+} hal_i2c_ops_t;
+
+/* 以太网硬件抽象层接口 */
+typedef struct {
+    hal_status_t (*init)(void);
+    hal_status_t (*deinit)(void);
+    hal_status_t (*send)(const uint8_t *data, uint32_t len);
+    hal_status_t (*recv)(uint8_t *data, uint32_t *len, uint32_t timeout);
+    hal_status_t (*get_link_status)(void);
+} hal_eth_ops_t;
+
+/* 硬件抽象层操作结构体 */
+typedef struct {
+    const hal_uart_ops_t *uart;
+    const hal_i2c_ops_t *i2c;
+    const hal_eth_ops_t *eth;
+} hal_ops_t;
+
+/* 硬件抽象层初始化函数 */
+extern hal_status_t hal_init(void);
+
+/* 获取硬件抽象层操作结构体 */
+extern const hal_ops_t *hal_get_ops(void);
+
+#endif /* HAL_H */