初始化提交

arduino-cli/libraries/M5Core2-master/examples/Basics/button/button.ino

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+/*
+*******************************************************************************
+* Copyright (c) 2021 by M5Stack
+*                  Equipped with M5Core2 sample source code
+*                          配套  M5Core2 示例源代码
+* Visit the website for more information: https://docs.m5stack.com/en/core/core2
+* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/core2
+*
+* describe: Button example.  按键示例
+* date: 2021/7/21
+*******************************************************************************
+*/
+#include <M5Core2.h>
+/* After M5Core2 is started or reset
+  the program in the setUp () function will be run, and this part will only be run once.
+  在 M5Core2 启动或者复位后，即会开始执行setup()函数中的程序，该部分只会执行一次。 */
+void setup() {
+  M5.begin();  //Init M5Core.  初始化 M5Core2
+  M5.Lcd.setTextColor(YELLOW);  //Set the font color to yellow.  设置字体颜色为黄色
+  M5.Lcd.setTextSize(2);  //Set the font size.  设置字体大小为2
+  M5.Lcd.setCursor(65, 10); //Move the cursor position to (x, y).  移动光标位置到 (x, y)处
+  M5.Lcd.println("Button example"); //The screen prints the formatted string and wraps the line.  输出格式化字符串并换行
+  M5.Lcd.setCursor(3, 35);
+  M5.Lcd.println("Press button B for 700ms");
+  M5.Lcd.println("to clear screen.");
+  M5.Lcd.setTextColor(RED);
+}
+
+/* After the program in setup() runs, it runs the program in loop()
+The loop() function is an infinite loop in which the program runs repeatedly
+在setup()函数中的程序执行完后，会接着执行loop()函数中的程序
+loop()函数是一个死循环，其中的程序会不断的重复运行 */
+void loop() {
+  M5.update(); //Read the press state of the key.  读取按键 A, B, C 的状态
+  if (M5.BtnA.wasReleased() || M5.BtnA.pressedFor(1000, 200)) {
+    M5.Lcd.print('A');
+  } else if (M5.BtnB.wasReleased() || M5.BtnB.pressedFor(1000, 200)) {
+    M5.Lcd.print('B');
+  } else if (M5.BtnC.wasReleased() || M5.BtnC.pressedFor(1000, 200)) {
+    M5.Lcd.print('C');
+  } else if (M5.BtnB.wasReleasefor(700)) {
+    M5.Lcd.clear(WHITE);  // Clear the screen and set white to the background color.  清空屏幕并将白色设置为底色
+    M5.Lcd.setCursor(0, 0);
+  }
+}