109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
/*
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Arduino TFT Bitmap Logo example
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This example reads an image file from a micro-SD card
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and draws it on the screen, at random locations.
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In this sketch, the Arduino logo is read from a micro-SD card.
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There is a .bmp file included with this sketch.
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- open the sketch folder (Ctrl-K or Cmd-K)
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- copy the "arduino.bmp" file to a micro-SD
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- put the SD into the SD slot of the Arduino TFT module.
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This example code is in the public domain.
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Created 19 April 2013 by Enrico Gueli
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http://www.arduino.cc/en/Tutorial/TFTBitmapLogo
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*/
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// include the necessary libraries
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#include <SPI.h>
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#include <SD.h>
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#include <TFT.h> // Arduino LCD library
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// pin definition for the Uno
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#define sd_cs 4
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#define lcd_cs 10
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#define dc 9
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#define rst 8
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// pin definition for the Leonardo
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//#define sd_cs 8
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//#define lcd_cs 7
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//#define dc 0
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//#define rst 1
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TFT TFTscreen = TFT(lcd_cs, dc, rst);
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// this variable represents the image to be drawn on screen
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PImage logo;
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void setup() {
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// initialize the GLCD and show a message
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// asking the user to open the serial line
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TFTscreen.begin();
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TFTscreen.background(255, 255, 255);
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TFTscreen.stroke(0, 0, 255);
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TFTscreen.println();
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TFTscreen.println(F("Arduino TFT Bitmap Example"));
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TFTscreen.stroke(0, 0, 0);
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TFTscreen.println(F("Open serial monitor"));
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TFTscreen.println(F("to run the sketch"));
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// initialize the serial port: it will be used to
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// print some diagnostic info
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Serial.begin(9600);
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while (!Serial) {
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// wait for serial port to connect. Needed for native USB port only
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}
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// clear the GLCD screen before starting
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TFTscreen.background(255, 255, 255);
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// try to access the SD card. If that fails (e.g.
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// no card present), the setup process will stop.
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Serial.print(F("Initializing SD card..."));
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if (!SD.begin(sd_cs)) {
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Serial.println(F("failed!"));
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return;
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}
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Serial.println(F("OK!"));
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// initialize and clear the GLCD screen
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TFTscreen.begin();
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TFTscreen.background(255, 255, 255);
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// now that the SD card can be access, try to load the
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// image file.
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logo = TFTscreen.loadImage("arduino.bmp");
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if (!logo.isValid()) {
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Serial.println(F("error while loading arduino.bmp"));
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}
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}
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void loop() {
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// don't do anything if the image wasn't loaded correctly.
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if (logo.isValid() == false) {
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return;
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}
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Serial.println(F("drawing image"));
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// get a random location where to draw the image.
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// To avoid the image to be draw outside the screen,
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// take into account the image size.
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int x = random(TFTscreen.width() - logo.width());
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int y = random(TFTscreen.height() - logo.height());
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// draw the image to the screen
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TFTscreen.image(logo, x, y);
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// wait a little bit before drawing again
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delay(1500);
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}
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