149 lines
4.2 KiB
C++
149 lines
4.2 KiB
C++
// Created by Bodmer 24th Jan 2017 - Tested in Arduino IDE 1.8.5 esp8266 Core 2.4.0
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// The latest Arduino IDE versions support UTF-8 encoding of Unicode characters
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// within sketches:
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// https://playground.arduino.cc/Code/UTF-8
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/*
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The library expects strings to be in UTF-8 encoded format:
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https://www.fileformat.info/info/unicode/utf8.htm
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Creating varaibles needs to be done with care when using character arrays:
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char c = 'µ'; // Wrong
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char bad[4] = "5µA"; // Wrong
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char good[] = "5µA"; // Good
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String okay = "5µA"; // Good
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This is because UTF-8 characters outside the basic Latin set occupy more than
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1 byte per character! A 16 bit unicode character occupies 3 bytes!
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*/
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//====================================================================================
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// Libraries
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//====================================================================================
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// Call up the SPIFFS FLASH filing system this is part of the ESP Core
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#include <TFT_eSPI.h> // Hardware-specific library
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TFT_eSPI tft = TFT_eSPI(); // Invoke custom library
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uint16_t bg = TFT_BLACK;
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uint16_t fg = TFT_WHITE;
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//====================================================================================
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// Setup
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//====================================================================================
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void setup()
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{
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Serial.begin(115200); // Used for messages and the C array generator
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Serial.println("NodeMCU vlw font test!");
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if (!SPIFFS.begin()) {
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Serial.println("SPIFFS initialisation failed!");
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while (1) yield(); // Stay here twiddling thumbs waiting
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}
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Serial.println("\r\nInitialisation done.");
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listFiles(); // Lists the files so you can see what is in the SPIFFS
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tft.begin();
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tft.setRotation(0); // portrait
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fg = TFT_WHITE;
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bg = TFT_BLACK;
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}
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//====================================================================================
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// Loop
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//====================================================================================
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void loop()
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{
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tft.setTextColor(fg, bg);
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//----------------------------------------------------------------------------
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// Anti-aliased font test
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String test1 = "Hello World";
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// Load a smooth font from SPIFFS
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tft.loadFont("Final-Frontier-28");
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tft.setRotation(0);
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// Show all characters on screen with 2 second (2000ms) delay between screens
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tft.showFont(2000); // Note: This function moves the cursor position!
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tft.fillScreen(bg);
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tft.setCursor(0,0);
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tft.println(test1);
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// Remove font parameters from memory to recover RAM
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tft.unloadFont();
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delay(2000);
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//----------------------------------------------------------------------------
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// We can have any random mix of characters in the font
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String test2 = "仝倀"; // Unicodes 0x4EDD, 0x5000
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tft.loadFont("Unicode-Test-72");
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tft.setRotation(1);
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// Show all characters on screen with 2 second (2000ms) delay between screens
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tft.showFont(2000); // Note: This function moves the cursor position!
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tft.fillScreen(bg);
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tft.setCursor(0,0);
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tft.setTextColor(TFT_CYAN, bg);
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tft.println(test2);
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tft.setTextColor(TFT_YELLOW, bg);
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tft.println("12:00pm");
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tft.setTextColor(TFT_MAGENTA, bg);
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tft.println("1000Ω");
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// Remove font parameters from memory to recover RAM
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tft.unloadFont();
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delay(2000);
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//----------------------------------------------------------------------------
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// Latin and Hiragana font mix
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String test3 = "こんにちは";
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tft.loadFont("Latin-Hiragana-24");
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tft.setRotation(0);
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// Show all characters on screen with 2 second (2000ms) delay between screens
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tft.showFont(2000); // Note: This function moves the cursor position!
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tft.fillScreen(bg);
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tft.setTextColor(TFT_GREEN, bg);
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tft.setCursor(0,0);
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tft.println("Konnichiwa");
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tft.println(test3);
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tft.println();
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tft.println("Sayonara");
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tft.println("さようなら"); // Sayonara
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// Remove font parameters from memory to recover RAM
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tft.unloadFont();
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delay(2000);
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//
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//----------------------------------------------------------------------------
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}
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//====================================================================================
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