acid-drop- Hacking the planet from a LilyGo T-Deck using custom firmware |
git clone git://git.acid.vegas/acid-drop.git |
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TFT_Rainbow480.ino (5761B)
1 /* 2 An example showing rainbow colours on a 3.0 or 3.2" TFT LCD screen 3 and to show basic examples of font use. 4 5 This sketch uses the GLCD, 2, 4, 6 fonts only. 6 7 Make sure all the required fonts are loaded by editing the 8 User_Setup.h file in the TFT_eSPI library folder. 9 10 11 ######################################################################### 12 ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ###### 13 ###### TO SELECT THE FONTS AND PINS YOU USE ###### 14 ######################################################################### 15 */ 16 17 #include <SPI.h> 18 19 #include <TFT_eSPI.h> // Hardware-specific library 20 21 TFT_eSPI tft = TFT_eSPI(); // Invoke custom library 22 23 unsigned long targetTime = 0; 24 byte red = 31; 25 byte green = 0; 26 byte blue = 0; 27 byte state = 0; 28 unsigned int colour = red << 11; // Colour order is RGB 5+6+5 bits each 29 30 void setup(void) { 31 tft.init(); 32 tft.setRotation(2); 33 tft.fillScreen(TFT_BLACK); 34 35 targetTime = millis() + 1000; 36 } 37 38 void loop() { 39 40 if (targetTime < millis()) { 41 targetTime = millis() + 10000; 42 43 rainbow_fill(); // Fill the screen with rainbow colours 44 45 // The standard AdaFruit font still works as before 46 tft.setTextColor(TFT_BLACK); // Background is not defined so it is transparent 47 tft.setCursor (100, 5); 48 tft.setTextFont(1); // Select font 1 which is the Adafruit GLCD font 49 tft.print("Original Adafruit font!"); 50 51 // The new larger fonts do not need to use the .setCursor call, coords are embedded 52 tft.setTextColor(TFT_BLACK); // Do not plot the background colour 53 // Overlay the black text on top of the rainbow plot (the advantage of not drawing the backgorund colour!) 54 tft.drawCentreString("Font size 2", 160, 14, 2); // Draw text centre at position 120, 14 using font 2 55 tft.drawCentreString("Font size 4", 160, 30, 4); // Draw text centre at position 120, 30 using font 4 56 tft.drawCentreString("12.34", 160, 54, 6); // Draw text centre at position 120, 54 using font 6 57 tft.drawCentreString("12.34 is in font 6", 160, 92, 2); // Draw text centre at position 120, 92 using font 2 58 // Note the x, y position is the top left corner of the first character printed! 59 60 // draw a floating point number 61 float pi = 3.14159; // Value to print 62 int precision = 3; // Number of digits after decimal point 63 int xpos = 130; // x position 64 int ypos = 110; // y position 65 int font = 2; // font number 2 66 xpos += tft.drawFloat(pi, precision, xpos, ypos, font); // Draw rounded number and return new xpos delta for next print position 67 tft.drawString(" is pi", xpos, ypos, font); // Continue printing from new x position 68 69 tft.setTextSize(1); // We are using a text size multiplier of 1 70 71 tft.setTextColor(TFT_BLACK); // Set text colour to black, no background (so transparent) 72 tft.setCursor(76, 150, 4); // Set cursor to x = 76, y = 150 and use font 4 73 tft.println("Transparent..."); // As we use println, the cursor moves to the next line 74 75 tft.setCursor(70, 175); // Set cursor to x = 70, y = 175 76 tft.setTextColor(TFT_WHITE, TFT_BLACK); // Set text colour to white and background to black 77 tft.println("White on black"); 78 79 tft.setTextFont(4); // Select font 4 without moving cursor 80 tft.setCursor(00, 210); // Set cursor to x = 90, y = 210 without changing the font 81 tft.setTextColor(TFT_WHITE); 82 83 // By using the print class we can use all the formatting features like printing HEX 84 tft.print(57005, HEX); // Cursor does no move to next line 85 tft.println(48879, HEX); // print and move cursor to next line 86 87 tft.setTextColor(TFT_GREEN, TFT_BLACK); // This time we will use green text on a black background 88 tft.setTextFont(2); // Select font 2 89 //Text will wrap to the next line if needed, by luck it breaks the lines at a space.. 90 tft.println(" Ode to a Small Lump of Green Putty I Found in My Armpit One Midsummer Morning "); 91 92 tft.drawCentreString("34.56", 160, 300, 7); // Draw text centre at position 120, 54 using font 6 93 tft.drawCentreString("34.56 is in font 7", 160, 350, 2); // Draw text centre at position 120, 92 using font 2 94 95 tft.drawCentreString("78.90", 160, 370, 8); // Draw text centre at position 120, 54 using font 6 96 tft.drawCentreString("78.90 is in font 8", 160, 450, 2); // Draw text centre at position 120, 92 using font 2 97 } 98 } 99 100 // Fill screen with a rainbow pattern 101 void rainbow_fill() 102 { 103 // The colours and state are not initialised so the start colour changes each time the funtion is called 104 105 for (int i = 479; i > 0; i--) { 106 // Draw a vertical line 1 pixel wide in the selected colour 107 tft.drawFastHLine(0, i, tft.width(), colour); // in this example tft.width() returns the pixel width of the display 108 // This is a "state machine" that ramps up/down the colour brightnesses in sequence 109 switch (state) { 110 case 0: 111 green ++; 112 if (green == 64) { 113 green = 63; 114 state = 1; 115 } 116 break; 117 case 1: 118 red--; 119 if (red == 255) { 120 red = 0; 121 state = 2; 122 } 123 break; 124 case 2: 125 blue ++; 126 if (blue == 32) { 127 blue = 31; 128 state = 3; 129 } 130 break; 131 case 3: 132 green --; 133 if (green == 255) { 134 green = 0; 135 state = 4; 136 } 137 break; 138 case 4: 139 red ++; 140 if (red == 32) { 141 red = 31; 142 state = 5; 143 } 144 break; 145 case 5: 146 blue --; 147 if (blue == 255) { 148 blue = 0; 149 state = 0; 150 } 151 break; 152 } 153 colour = red << 11 | green << 5 | blue; 154 } 155 } 156 157 158