增加了屏幕显示的封装驱动，日志输出，电机挡位控制

Core/Inc/screen.h

@@ -0,0 +1,73 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    screen.h
+  * @brief   串口屏驱动接口（用于 JC 系列串口屏，使用 USART1）
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+#ifndef __SCREEN_H__
+#define __SCREEN_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+
+/**
+ * @brief 发送原始命令字符串到屏幕（阻塞直到发送完成）
+ * @param cmd C 字符串，命令应以";\r\n"结尾
+ * @return 0 成功, 负值 错误
+ */
+int Screen_SendCmd(const char *cmd);
+
+
+/* 常用封装 - 简短说明见各函数 */
+/** 清屏，layer: 要清除的层号（通常为0） */
+void Screen_Clear(uint8_t layer);
+/** 按地址显示图片（addr 为闪存地址） */
+void Screen_DisplayImage(uint32_t addr);
+/** 设置背光，val: 0 最亮，255 最暗 */
+void Screen_SetBrightness(uint8_t val);
+/** 绘制 16 字号文本（不带背景） */
+void Screen_DrawText16(uint16_t x, uint16_t y, const char *text, uint8_t color);
+
+/* 额外封装命令 */
+void Screen_SetRotation(uint8_t dir);
+void Screen_SetBaud(uint32_t baud);
+void Screen_DisplayImageAtAddr(uint32_t addr, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t mode);
+void Screen_DisplayImageByIndex(uint32_t index, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t mode);
+void Screen_Pixel(uint16_t x, uint16_t y, uint8_t color);
+void Screen_Line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint8_t color);
+void Screen_Box(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint8_t color);
+void Screen_BoxFill(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint8_t color);
+void Screen_Circle(uint16_t x, uint16_t y, uint16_t r, uint8_t color);
+void Screen_CircleFill(uint16_t x, uint16_t y, uint16_t r, uint8_t color);
+void Screen_SetBGColor(uint8_t color);
+
+/* 带/不带背景的文本 */
+void Screen_DrawText16V(uint16_t x, uint16_t y, const char *text, uint8_t color);
+void Screen_DrawText24(uint16_t x, uint16_t y, const char *text, uint8_t color);
+void Screen_DrawText24V(uint16_t x, uint16_t y, const char *text, uint8_t color);
+void Screen_DrawText32(uint16_t x, uint16_t y, const char *text, uint8_t color);
+void Screen_DrawText32V(uint16_t x, uint16_t y, const char *text, uint8_t color);
+void Screen_DrawText48(uint16_t x, uint16_t y, const char *text, uint8_t color, uint8_t transparent);
+
+/* Button */
+void Screen_Button(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const char *label, uint8_t fontColor, uint8_t bgColor, uint8_t pressFlag, uint8_t style);
+
+/* Qrcode */
+void Screen_QRCode(uint16_t x, uint16_t y, const char *url);
+void Screen_QRCodeEx(uint16_t x, uint16_t y, const char *url, uint16_t size, uint8_t color);
+
+/* 版本信息 */
+void Screen_Ver(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SCREEN_H__ */