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