完成LED、RS485、IIC初始化部分代码。

inc/RS485.h

@@ -0,0 +1,31 @@
+//
+// Created by dell on 24-12-3.
+//
+
+#ifndef RS485_H
+#define RS485_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "systick.h"
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define RS485_RCU            RCU_USART0
+#define RS485_GPIO_RCU       RCU_GPIOA
+#define RS485_GPIO_PORT      GPIOA
+#define RS485_TX_PIN         GPIO_PIN_2
+#define RS485_RX_PIN         GPIO_PIN_3
+#define RS485_PHY            USART0
+#define RS485_BAUDRATE       115200U
+
+#define RS485_EN_PIN         GPIO_PIN_1
+
+#define RX_BUFFER_SIZE 64
+
+void RS485_config(void);
+void process_command(char *cmd);
+
+#endif //RS485_H