[136] | 1 | /*
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| 2 |
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| 3 | Arduino TFT Bitmap Logo example
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| 4 |
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| 5 | This example reads an image file from a micro-SD card
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| 6 | and draws it on the screen, at random locations.
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| 7 |
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| 8 | In this sketch, the Arduino logo is read from a micro-SD card.
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| 9 | There is a .bmp file included with this sketch.
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| 10 | - open the sketch folder (Ctrl-K or Cmd-K)
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| 11 | - copy the "arduino.bmp" file to a micro-SD
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| 12 | - put the SD into the SD slot of the Arduino TFT module.
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| 13 |
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| 14 | This example code is in the public domain.
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| 15 |
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| 16 | Created 19 April 2013 by Enrico Gueli
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| 17 |
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| 18 | http://arduino.cc/en/Tutorial/TFTBitmapLogo
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| 19 |
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| 20 | */
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| 21 |
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| 22 | // include the necessary libraries
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| 23 | #include <SPI.h>
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| 24 | #include <SD.h>
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| 25 | #include <TFT.h> // Arduino LCD library
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| 26 |
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| 27 | // pin definition for the Uno
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| 28 | #define sd_cs 4
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| 29 | #define lcd_cs 10
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| 30 | #define dc 9
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| 31 | #define rst 8
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| 32 |
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| 33 | // pin definition for the Leonardo
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| 34 | //#define sd_cs 8
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| 35 | //#define lcd_cs 7
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| 36 | //#define dc 0
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| 37 | //#define rst 1
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| 38 |
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| 39 | TFT TFTscreen = TFT(lcd_cs, dc, rst);
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| 40 |
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| 41 | // this variable represents the image to be drawn on screen
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| 42 | PImage logo;
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| 43 |
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| 44 |
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| 45 | void setup() {
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| 46 | // initialize the GLCD and show a message
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| 47 | // asking the user to open the serial line
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| 48 | TFTscreen.begin();
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| 49 | TFTscreen.background(255, 255, 255);
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| 50 |
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| 51 | TFTscreen.stroke(0, 0, 255);
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| 52 | TFTscreen.println();
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| 53 | TFTscreen.println(F("Arduino TFT Bitmap Example"));
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| 54 | TFTscreen.stroke(0, 0, 0);
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| 55 | TFTscreen.println(F("Open serial monitor"));
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| 56 | TFTscreen.println(F("to run the sketch"));
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| 57 |
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| 58 | // initialize the serial port: it will be used to
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| 59 | // print some diagnostic info
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| 60 | Serial.begin(9600);
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| 61 | while (!Serial) {
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| 62 | // wait for serial line to be ready
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| 63 | }
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| 64 |
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| 65 | // clear the GLCD screen before starting
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| 66 | TFTscreen.background(255, 255, 255);
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| 67 |
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| 68 | // try to access the SD card. If that fails (e.g.
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| 69 | // no card present), the setup process will stop.
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| 70 | Serial.print(F("Initializing SD card..."));
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| 71 | if (!SD.begin(sd_cs)) {
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| 72 | Serial.println(F("failed!"));
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| 73 | return;
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| 74 | }
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| 75 | Serial.println(F("OK!"));
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| 76 |
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| 77 | // initialize and clear the GLCD screen
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| 78 | TFTscreen.begin();
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| 79 | TFTscreen.background(255, 255, 255);
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| 80 |
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| 81 | // now that the SD card can be access, try to load the
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| 82 | // image file.
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| 83 | logo = TFTscreen.loadImage("arduino.bmp");
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| 84 | if (!logo.isValid()) {
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| 85 | Serial.println(F("error while loading arduino.bmp"));
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | void loop() {
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| 90 | // don't do anything if the image wasn't loaded correctly.
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| 91 | if (logo.isValid() == false) {
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| 92 | return;
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| 93 | }
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| 94 |
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| 95 | Serial.println(F("drawing image"));
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| 96 |
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| 97 | // get a random location where to draw the image.
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| 98 | // To avoid the image to be draw outside the screen,
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| 99 | // take into account the image size.
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| 100 | int x = random(TFTscreen.width() - logo.width());
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| 101 | int y = random(TFTscreen.height() - logo.height());
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| 102 |
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| 103 | // draw the image to the screen
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| 104 | TFTscreen.image(logo, x, y);
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| 105 |
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| 106 | // wait a little bit before drawing again
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| 107 | delay(1500);
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| 108 | }
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