forked from Bodmer/TFT_eSPI
Bodmer
ef21c44a28
The extra examples use smooth fonts stored in arrays and thus can run on STM32 processors which do not support SPIFFS.
149 lines
4.2 KiB
Arduino
149 lines
4.2 KiB
Arduino
// Created by Bodmer 24th Jan 2017
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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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// The fonts are stored in arrays within the sketch tabs.
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// A processing sketch to create new fonts can be found in the Tools folder of TFT_eSPI
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// https://github.com/Bodmer/TFT_eSPI/tree/master/Tools/Create_Smooth_Font/Create_font
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#include "Final_Frontier_28.h"
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#include "Latin_Hiragana_24.h"
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#include "Unicode_Test_72.h"
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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("Font test!");
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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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