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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
/*
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Esplora TFT Bitmap Logos
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This example for the Arduino TFT screen is for use
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with an Arduino Esplora.
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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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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 LCD 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/EsploraTFTBitmapLogo
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*/
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// include the necessary libraries
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#include <Esplora.h>
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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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// the Esplora pin connected to the chip select line for SD card
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#define SD_CS 8
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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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EsploraTFT.begin();
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EsploraTFT.background(255, 255, 255);
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EsploraTFT.stroke(0, 0, 255);
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EsploraTFT.println();
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EsploraTFT.println(F("Arduino LCD Bitmap Example"));
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EsploraTFT.stroke(0, 0, 0);
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EsploraTFT.println(F("Open serial monitor"));
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EsploraTFT.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 monitor to be open
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}
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// try to access the SD card. If that fails (e.g.
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// no card present), the Esplora's LED will turn red.
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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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Esplora.writeRed(255);
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return;
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}
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Serial.println("OK!");
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// clear the GLCD screen before starting
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EsploraTFT.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. The Esplora LED will turn green or red if
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// the loading went OK or not.
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Esplora.writeRGB(0, 0, 0);
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logo = EsploraTFT.loadImage("arduino.bmp");
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if (logo.isValid()) {
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Esplora.writeGreen(255);
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} else {
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Esplora.writeRed(255);
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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(EsploraTFT.width() - logo.width());
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int y = random(EsploraTFT.height() - logo.height());
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// draw the image to the screen
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EsploraTFT.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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