acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
Print_Smooth_Font.ino (4922B)
      1 /*
      2   Sketch to demonstrate using the print class with smooth fonts
      3 
      4   Sketch is written for a 240 x 320 display
      5 
      6 //  Upload the fonts and icons to LittleFS (must set at least 1M for LittleFS) using the
      7 //  "Tools"  "ESP8266 LittleFS Data Upload" menu option in the IDE.
      8 //  To add this option follow instructions here for the ESP8266:
      9 //  https://github.com/earlephilhower/arduino-esp8266littlefs-plugin
     10 
     11   New font files in the .vlw format can be created using the Processing
     12   sketch in the library Tools folder. The Processing sketch can convert
     13   TrueType fonts in *.ttf or *.otf files.
     14 
     15   The library supports 16 bit Unicode characters:
     16   https://en.wikipedia.org/wiki/Unicode_font
     17 
     18   The characters supported are in the in the Basic Multilingual Plane:
     19   https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane
     20 
     21   Make sure all the display driver and pin connections are correct by
     22   editing the User_Setup.h file in the TFT_eSPI library folder.
     23 
     24   #########################################################################
     25   ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
     26   #########################################################################
     27 */
     28 
     29 // Font files are stored in Flash FS
     30 #include <FS.h>
     31 #include <LittleFS.h>
     32 #define FlashFS LittleFS
     33 
     34 // Graphics and font library
     35 #include <TFT_eSPI.h>
     36 #include <SPI.h>
     37 
     38 TFT_eSPI tft = TFT_eSPI();  // Invoke library
     39 
     40 // -------------------------------------------------------------------------
     41 // Setup
     42 // -------------------------------------------------------------------------
     43 void setup(void) {
     44   Serial.begin(115200); // Used for messages
     45 
     46   tft.init();
     47   tft.setRotation(1);
     48 
     49   if (!LittleFS.begin()) {
     50     Serial.println("Flash FS initialisation failed!");
     51     while (1) yield(); // Stay here twiddling thumbs waiting
     52   }
     53   Serial.println("\n\Flash FS available!");
     54 
     55   listFiles(); // Lists the files so you can see what is in the SPIFFS
     56 
     57 }
     58 
     59 // -------------------------------------------------------------------------
     60 // Main loop
     61 // -------------------------------------------------------------------------
     62 void loop() {
     63   // Wrap test at right and bottom of screen
     64   tft.setTextWrap(true, true);
     65 
     66   // Name of font file (library adds leading / and .vlw)
     67   String fileName = "Final-Frontier-28";
     68 
     69   // Font and background colour, background colour is used for anti-alias blending
     70   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     71 
     72   // Load the font
     73   tft.loadFont(fileName, LittleFS);
     74 
     75   // Display all characters of the font
     76   tft.showFont(2000);
     77 
     78   // Set "cursor" at top left corner of display (0,0)
     79   // (cursor will move to next line automatically during printing with 'tft.println'
     80   //  or stay on the line is there is room for the text with tft.print)
     81   tft.setCursor(0, 0);
     82 
     83   // Set the font colour to be white with a black background, set text size multiplier to 1
     84   tft.setTextColor(TFT_WHITE, TFT_BLACK);
     85 
     86   // We can now plot text on screen using the "print" class
     87   tft.println("Hello World!");
     88 
     89   // Set the font colour to be yellow
     90   tft.setTextColor(TFT_YELLOW, TFT_BLACK);
     91   tft.println(1234.56);
     92 
     93   // Set the font colour to be red
     94   tft.setTextColor(TFT_RED, TFT_BLACK);
     95   tft.println((uint32_t)3735928559, HEX); // Should print DEADBEEF
     96 
     97   // Set the font colour to be green with black background
     98   tft.setTextColor(TFT_GREEN, TFT_BLACK);
     99   tft.println("Anti-aliased font!");
    100   tft.println("");
    101 
    102   // Test some print formatting functions
    103   float fnumber = 123.45;
    104 
    105   // Set the font colour to be blue
    106   tft.setTextColor(TFT_BLUE, TFT_BLACK);
    107   tft.print("Float = ");       tft.println(fnumber);           // Print floating point number
    108   tft.print("Binary = ");      tft.println((int)fnumber, BIN); // Print as integer value in binary
    109   tft.print("Hexadecimal = "); tft.println((int)fnumber, HEX); // Print as integer number in Hexadecimal
    110 
    111   // Unload the font to recover used RAM
    112   tft.unloadFont();
    113 
    114   delay(10000);
    115 }
    116 
    117 
    118 // -------------------------------------------------------------------------
    119 // List files in ESP8266 or ESP32 SPIFFS memory
    120 // -------------------------------------------------------------------------
    121 void listFiles(void) {
    122   Serial.println();
    123   Serial.println("Flash FS files found:");
    124 
    125   fs::Dir dir = LittleFS.openDir("/"); // Root directory
    126   String  line = "=====================================";
    127 
    128   Serial.println(line);
    129   Serial.println("  File name               Size");
    130   Serial.println(line);
    131 
    132   while (dir.next()) {
    133     String fileName = dir.fileName();
    134     Serial.print(fileName);
    135     int spaces = 25 - fileName.length(); // Tabulate nicely
    136     if (spaces < 0) spaces = 1;
    137     while (spaces--) Serial.print(" ");
    138     fs::File f = dir.openFile("r");
    139     Serial.print(f.size()); Serial.println(" bytes");
    140     yield();
    141   }
    142 
    143   Serial.println(line);
    144 
    145   Serial.println();
    146   delay(1000);
    147 }
    148 
    149 // -------------------------------------------------------------------------