Add libraries, picocalc notes.

libraries/TFT_eSPI/examples/Smooth Fonts/FLASH_Array/Unicode_test/Unicode_test.ino

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+//  Created by Bodmer 24th Jan 2017
+
+// The latest Arduino IDE versions support UTF-8 encoding of Unicode characters
+// within sketches:
+// https://playground.arduino.cc/Code/UTF-8
+
+/*
+  The library expects strings to be in UTF-8 encoded format:
+  https://www.fileformat.info/info/unicode/utf8.htm
+
+  Creating varaibles needs to be done with care when using character arrays:
+  char c = 'µ';          // Wrong
+  char bad[4] = "5µA";   // Wrong
+  char good[] = "5µA";   // Good
+  String okay = "5µA";   // Good
+
+  This is because UTF-8 characters outside the basic Latin set occupy more than
+  1 byte per character! A 16 bit Unicode character occupies 3 bytes!
+
+*/
+
+//  The fonts are stored in arrays within the sketch tabs.
+
+//  A processing sketch to create new fonts can be found in the Tools folder of TFT_eSPI
+//  https://github.com/Bodmer/TFT_eSPI/tree/master/Tools/Create_Smooth_Font/Create_font
+
+#include "Final_Frontier_28.h"
+#include "Latin_Hiragana_24.h"
+#include "Unicode_Test_72.h"
+
+//====================================================================================
+//                                  Libraries
+//====================================================================================
+
+#include <TFT_eSPI.h>      // Hardware-specific library
+
+TFT_eSPI tft = TFT_eSPI(); // Invoke custom library
+
+uint16_t bg = TFT_BLACK;
+uint16_t fg = TFT_WHITE;
+
+
+//====================================================================================
+//                                    Setup
+//====================================================================================
+void setup()
+{
+  Serial.begin(115200); // Used for messages and the C array generator
+
+  Serial.println("Font test!");
+
+  tft.begin();
+  tft.setRotation(0);  // portrait
+
+  fg = TFT_WHITE;
+  bg = TFT_BLACK;
+}
+
+//====================================================================================
+//                                    Loop
+//====================================================================================
+void loop()
+{
+  tft.setTextColor(fg, bg);
+
+  //----------------------------------------------------------------------------
+  // Anti-aliased font test
+
+  String test1 = "Hello World";
+
+  // Load a smooth font from SPIFFS
+  tft.loadFont(Final_Frontier_28);
+
+  tft.setRotation(0);
+
+  // Show all characters on screen with 2 second (2000ms) delay between screens
+  tft.showFont(2000); // Note: This function moves the cursor position!
+
+  tft.fillScreen(bg);
+  tft.setCursor(0,0);
+
+  tft.println(test1);
+
+  // Remove font parameters from memory to recover RAM
+  tft.unloadFont();
+
+  delay(2000);
+
+  //----------------------------------------------------------------------------
+  // We can have any random mix of characters in the font
+
+  String test2 = "仝倀"; // Unicodes 0x4EDD, 0x5000
+
+  tft.loadFont(Unicode_Test_72);
+
+  tft.setRotation(1);
+
+  // Show all characters on screen with 2 second (2000ms) delay between screens
+  tft.showFont(2000); // Note: This function moves the cursor position!
+
+  tft.fillScreen(bg);
+  tft.setCursor(0,0);
+
+  tft.setTextColor(TFT_CYAN, bg);
+  tft.println(test2);
+
+  tft.setTextColor(TFT_YELLOW, bg);
+  tft.println("12:00pm");
+
+  tft.setTextColor(TFT_MAGENTA, bg);
+  tft.println("1000Ω");
+
+  // Remove font parameters from memory to recover RAM
+  tft.unloadFont();
+
+  delay(2000);
+
+  //----------------------------------------------------------------------------
+  // Latin and Hiragana font mix
+
+  String test3 = "こんにちは";
+    
+  tft.loadFont(Latin_Hiragana_24);
+
+  tft.setRotation(0);
+  
+  // Show all characters on screen with 2 second (2000ms) delay between screens
+  tft.showFont(2000); // Note: This function moves the cursor position!
+
+  tft.fillScreen(bg);
+  tft.setTextColor(TFT_GREEN, bg);
+  tft.setCursor(0,0);
+
+  tft.println("Konnichiwa");
+  tft.println(test3);
+  tft.println();
+  tft.println("Sayonara");
+  tft.println("さようなら"); // Sayonara
+
+  // Remove font parameters from memory to recover RAM
+  tft.unloadFont();
+
+  delay(2000);
+  //
+  //----------------------------------------------------------------------------
+}
+//====================================================================================