Merge pull request #48 from Tinyu-Zhao/master

add some Ex&explain

examples/Advanced/Display/Display_Unicode/Display_Unicode.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：Display_Unicode.  Unicode显示
+* date：2021/7/23
+*******************************************************************************
+*/
+
+/*---PLEASE SEE THE README----
+------请在使用前看README文件----*/
+#include <M5Core2.h>
+#include "CUF_24px.h"
+
+void setup()
+{
+  M5.begin(); //Init M5Stack.  初始化M5Core2
+  M5.Lcd.setFreeFont(&unicode_24px);  //Set the GFX font to use.  设置要使用的GFX字体
+  M5.Lcd.setTextDatum(TC_DATUM);  //Set text alignment to center-up alignment. 设置文本对齐方式为居中向上对齐
+}
+
+void loop()
+{
+  M5.Lcd.fillScreen(0);
+  M5.Lcd.drawString("Hello world", 160, 60, 1); //Hello world is displayed in font 1 on (1600.60).
+  M5.Lcd.drawString("你好  世界", 160, 90, 1);    //在(160,60)处以字体1显示hello world
+  M5.Lcd.drawString("Здравствуй  мир", 160, 120, 1);
+  M5.Lcd.drawString("こんにちは  せかい", 160, 150, 1);
+  delay(3000);
+
+  M5.Lcd.fillScreen(0); //Fill the screen with black (used to clear the screen) is equivalent to clear ().  使屏幕充满黑色(用来清屏)等同于clear()
+  M5.Lcd.setCursor(0, 30);  // Set the text cursor 0,30 position.  设置文本光标在(0,30)处
+  M5.Lcd.printf("☀☁☂☃☄★☆☇☈☉☊☋☌☍☎☏☐☑☒☓☔☕☖☗☘☙☚☛☜☝☞☟☠☡☢☣☤☥☦☧☨☩☪☫☬☭☮☯☸☹☺☻☼☽☾☿♀♁♂♃♄♅♆♇♈♉♊♋♌♍♎♏♐♑♒♓♔♕♖♗♘♙♚♛♜♝♞♟♠♡♢♣♤♥♦♧♨♩♪♫♬♭♮♯♰♱♲♳♴♵♶♷♸♹♺♻♼♽♾♿⚀⚁⚂⚃⚄⚅⚆⚇⚈⚉⚊⚋⚌⚍⚎⚏⚐⚑⚒⚓⚔⚕⚖⚗⚘⚙⚚⚛⚜⚝⚞⚟A⚠⚡⚢⚣⚤⚥⚦⚧⚨⚩⚪⚫⚬⚭⚮⚯B⚰⚱⚲⚳⚴⚵⚶⚷⚸⚹⚺⚻⚼⚽⚾⚿C⛀⛁⛂⛃⛄⛅⛆⛇⛈⛉⛊⛋⛌⛍⛎⛏D⛐⛑⛒⛓⛔⛕⛖⛗⛘⛙⛚⛛⛜⛝⛞⛟E⛠⛡⛢");
+  delay(3000);
+
+  M5.Lcd.fillScreen(0);
+  M5.Lcd.setCursor(0, 30);
+  M5.Lcd.printf("⛣⛤⛥⛦⛧⛨⛩⛪⛫⛬⛭⛮⛯F⛰⛱⛲⛳⛴⛵⛶⛷⛸⛹⛺⛻⛼⛽⛾⛿✀✁✂✃✄✅✆✇✈✉✊✋✌✍✎✏✐✑✒✓✔✕✖✗✘✙✚✛✜✝✞✟✠✡✢✣✤✥✦✧✨✩✪✫✬✭✮✯✰✱✲✳✴✵✶✷✸✹✺✻✼✽✾✿❀❁❂❃❄❅❆❇❈❉❊❋❌❍❎❏❐❑❒❓❔❕❖❗❘❙❚❛❜❝❞❟❠❡❢❣❤❥❦❧❨❩❪❫❬❭❮❯❰❱❲❳❴❵❶❷❸❹❺❻❼❽❾❿➀➁➂➃➄➅➆➇➈➉➊➋➌➍➎➏➐➑➒➓➔➕➖➗➘➙➚➛➜➝➞➟A➠➡➢➣➤➥➦➧➨➩➪➫➬➭➮➯B➰➱➲➳➴➵➶➷➸➹➺➻➼➽➾➿");
+  delay(3000);
+}

examples/Advanced/Display/Display_Unicode/README.md

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+Please modify <m5stack path>/src/utility/In_eSPI_Setup.h, At the end of the file add "#define USE_M5_FONT_CREATOR"
+
+if use PlatformIO, need add "board_build.partitions = no_ota.csv" in platformio.ini
+
+if want get customize unicode, try use https://github.com/m5stack/FontCreator, create font file
+
+  if add "#define USE_M5_FONT_CREATOR" and want to use standard gfx font, need modify font file
+    #ifdef USE_M5_FONT_CREATOR
+    0, 0,
+    #endif
+  like:
+
+   ``` cpp
+   const GFXfont FreeMono12pt7b PROGMEM = {
+         (uint8_t  *)FreeMono12pt7bBitmaps,
+         (GFXglyph *)FreeMono12pt7bGlyphs,
+         0x20, 0x7E, 24,
+         #ifdef USE_M5_FONT_CREATOR
+         0, 0,
+         #endif
+         }
+   ```
+
+
+
+
+
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+zh:
+如果编译过程中出现错误,请在<m5stack path>/src/utility/In_eSPI_Setup.h 中最后一行添加#define USE_M5_FONT_CREATOR
+
+如果你使用platformIO,需要在platformio.ini中添加board_build.partitions = no_ota.csv
+
+如果你想自定义unicode,请尝试使用https://github.com/m5stack/FontCreator 去创建相关字体文件
+
+如果添加了“#define USE_M5_FONT_CREATOR”，并且想使用标准的gfx字体，需要修改CUF_24px.h文件
+
+
+```cpp
+#ifdef USE_M5_FONT_CREATOR
+#define _unicode_24px_H_
+const GFXfont FreeMono12pt7b PROGMEM = {
+      (uint8_t  *)FreeMono12pt7bBitmaps,
+      (GFXglyph *)FreeMono12pt7bGlyphs,
+      0x20, 0x7E, 24,
+    };
+
+#endif
+```
+
+
+

examples/Advanced/Display/HZK16/HZK16.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：Character library.  字库
+* date：2021/7/28
+*******************************************************************************
+
+-----PLEASE SEE THE README----
+------请在使用前看README文件----*/
+
+#include <M5Core2.h>
+#include "display_ch.h"
+#include "str.h"
+
+DisplayCh displaych;
+void setup() {
+  M5.begin(); // Init M5Stack.  初始化M5Stack
+  displaych.loadHzk16();  //Load the Chinese character library (be sure to load before using the Chinese character library).  加载汉字库(务必在使用汉字库前加载)
+  displaych.setTextColor(WHITE, BLACK); //Set the text color to white and the text background color to black (mandatory).  设置文字颜色为白色,文字背景颜色为黑色(必加)
+  // Set text with red highlight color
+  displaych.setHighlightColor(RED); //Set the text highlight color to red.  设置文字高亮颜色为红色
+  displaych.setTextSize(1); //Set text size to 1.  设置字号大小为1 Set text size to 1(必加)
+}
+
+void loop() {
+  displaych.setCursor(0,0,1); //Set the cursor at (0,0) and the size to 1(mandatory).  将光标设置在(0,0)处,并设置字号为1(必加)
+  displaych.writeHzk(AscStr); //Display the contents of AscStr here (which can be changed in str.h).  在此处显示AscStr中的内容(可在str.h中更改)
+  delay(1000);  //delay 1000ms.  延迟1000ms
+  displaych.setCursor(0,45);
+  displaych.writeHzk(GbkStr); //Display the contents of GbkStr here (which can be changed in str.h).  在此处显示GbkStr中的内容(可在str.h中更改)
+  delay(1000);
+  //Highlight the text.  高亮显示文本
+  displaych.highlight(true);  //Turn on highlight.  开启高亮显示
+  displaych.setCursor(0,65);
+  displaych.writeHzk(GbkStr);
+  delay(1000);
+  displaych.fillScreen(BLACK);  //Fill the screen with black color, equivalent to empty the screen.  填充屏幕颜色为黑色,等效于清空屏幕
+  displaych.highlight(false); //Turn off highlight.  关闭高亮显示
+  delay(500);
+}

examples/Advanced/Display/HZK16/README.md

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+HZK16 is the GB2312 Chinese encoding format font, so it is normal that GbkStr is displayed as garbled in the src.h file
+To display Chinese normally, notepad++ or other software (UTF-8 for Arduino IDE) should be used to open str.h with encoding GB2312
+Modify the content in GbkStr to replace it with the character you want to display
+
+HZK16为GB2312中文编码格式字库, 故在 src.h 文件中 GbkStr 显示为乱码为正常现象
+若要正常显示中文应使用notepad++或其它软件（Arduino IDE 为UTF-8）使用编码GB2312打开str.h
+修改GbkStr里的内容即可更换为想要显示的字符