3.27_433：实现并验证RF433模块接收相应指令：新增UART路由核心模块，使程序能响应RF433/RS485指令，并向UART2输出LOG（RS485由于硬件原因未验证）

Core/Inc/multi_uart_router.h

@@ -0,0 +1,97 @@
+/**
+  ******************************************************************************
+  * @file    multi_uart_router.h
+  * @brief   多UART统一路由核心模块头文件
+  * @author  Application Layer
+  * @version 1.0
+  ******************************************************************************
+  * @attention
+  * 本模块实现多UART端口的统一管理，包括：
+  * - 接收环形缓冲区
+  * - 发送环形缓冲区
+  * - 端口上下文管理
+  * - 响应路由表
+  * 
+  * 设计依据：多通信接口统一指令处理系统开发计划 第3.1、3.3、3.5节及附录A
+  ******************************************************************************
+  */
+
+#ifndef __MULTI_UART_ROUTER_H
+#define __MULTI_UART_ROUTER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "usart.h"
+
+#define UART_RX_BUFFER_SIZE     128
+#define UART_TX_BUFFER_SIZE     256
+
+typedef enum {
+    PORT_UART1 = 0,
+    PORT_UART2 = 1,
+    PORT_UART3 = 2,
+    PORT_COUNT
+} port_id_t;
+
+typedef struct {
+    uint8_t buffer[UART_RX_BUFFER_SIZE];
+    volatile uint16_t head;
+    volatile uint16_t tail;
+    volatile uint16_t count;
+    volatile uint16_t overflow_count;
+} uart_rx_ring_t;
+
+typedef struct {
+    uint8_t buffer[UART_TX_BUFFER_SIZE];
+    volatile uint16_t head;
+    volatile uint16_t tail;
+    volatile uint16_t count;
+    volatile bool is_sending;
+    volatile uint16_t overflow_count;
+} uart_tx_ring_t;
+
+typedef struct {
+    UART_HandleTypeDef *huart;
+    const char *name;
+    uart_rx_ring_t rx_ring;
+    uart_tx_ring_t tx_ring;
+    uint8_t rx_tmp;
+    uint32_t rx_count;
+    uint32_t tx_count;
+    uint32_t error_count;
+    bool initialized;
+} uart_port_context_t;
+
+void MultiUART_Init(void);
+
+void MultiUART_FeedByte(port_id_t port_id, uint8_t byte);
+
+void MultiUART_Task(void);
+
+void MultiUART_Send(port_id_t port_id, const uint8_t *data, uint16_t len);
+
+void MultiUART_SendString(port_id_t port_id, const char *str);
+
+void MultiUART_SendFmt(port_id_t port_id, const char *fmt, ...);
+
+void MultiUART_TxCpltCallback(port_id_t port_id);
+
+const char *MultiUART_GetPortName(port_id_t port_id);
+
+uint16_t MultiUART_GetRxCount(port_id_t port_id);
+
+uint16_t MultiUART_ReadByte(port_id_t port_id, uint8_t *byte);
+
+uint16_t MultiUART_GetTxAvailable(port_id_t port_id);
+
+uint32_t MultiUART_GetOverflowCount(port_id_t port_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif