init

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the convention is to give header files names that end with `.h'.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

include/init.h

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+#ifndef INIT_H
+#define INIT_H
+
+#include <Adafruit_ST7735.h>
+#include <Arduino.h>
+
+namespace esp32 {
+namespace init {
+
+// 在屏幕上打印日志
+void tftLog(const char* msg, uint16_t color);
+
+// 读取并解析配置文件
+bool loadSettings();
+
+// 连接 WiFi
+void connectWiFi();
+
+// 初始化系统
+void initSystem(Adafruit_ST7735& tft);
+
+}  // namespace init
+}  // namespace esp32
+
+#endif  // INIT_H

include/utils.h

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+#ifndef UTILS_H
+#define UTILS_H
+
+#include <stdint.h>
+
+namespace esp32 {
+namespace utils {
+
+// 三次贝塞尔曲线计算
+float cubicBezier(float t, float p0, float p1, float p2, float p3);
+
+float solveCubicBezierX(float xTarget,
+                        float x1,
+                        float x2,
+                        float epsilon = 0.00001f);
+
+float linear2CubicBezier(float source,
+                         float x1 = 0.42f,
+                         float y1 = 0.0f,
+                         float x2 = 0.58f,
+                         float y2 = 1.0f);
+
+// RGB 颜色转换
+uint16_t rgbTo565(uint32_t rgbColor);
+
+}  // namespace utils
+
+// 颜色常量 (全局命名空间)
+namespace colors {
+    inline uint16_t BLACK()   { return utils::rgbTo565(0x000000); }
+    inline uint16_t WHITE()   { return utils::rgbTo565(0xFFFFFF); }
+    inline uint16_t RED()     { return utils::rgbTo565(0xFF0000); }
+    inline uint16_t GREEN()   { return utils::rgbTo565(0x00FF00); }
+    inline uint16_t BLUE()    { return utils::rgbTo565(0x0000FF); }
+    inline uint16_t YELLOW()  { return utils::rgbTo565(0xFFFF00); }
+}  // namespace colors
+
+}  // namespace esp32
+
+// 为了兼容性,保留宏定义
+#define BLACK   esp32::colors::BLACK()
+#define WHITE   esp32::colors::WHITE()
+#define RED     esp32::colors::RED()
+#define GREEN   esp32::colors::GREEN()
+#define BLUE    esp32::colors::BLUE()
+#define YELLOW  esp32::colors::YELLOW()
+
+#endif  // UTILS_H