102 lines
2.6 KiB
Arduino
102 lines
2.6 KiB
Arduino
|
/*
|
||
|
|
|
||
|
|
Esplora TFT Bitmap Logos
|
||
|
|
|
||
|
|
This example for the Arduino TFT screen is for use
|
||
|
|
with an Arduino Esplora.
|
||
|
|
|
||
|
|
This example reads an image file from a micro-SD card
|
||
|
|
and draws it on the screen, at random locations.
|
||
|
|
|
||
|
|
There is a .bmp file included with this sketch.
|
||
|
|
- open the sketch folder (Ctrl-K or Cmd-K)
|
||
|
|
- copy the "arduino.bmp" file to a micro-SD
|
||
|
|
- put the SD into the SD slot of the Arduino LCD module.
|
||
|
|
|
||
|
|
This example code is in the public domain.
|
||
|
|
|
||
|
|
Created 19 April 2013 by Enrico Gueli
|
||
|
|
|
||
|
|
http://www.arduino.cc/en/Tutorial/EsploraTFTBitmapLogo
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
// include the necessary libraries
|
||
|
|
#include <Esplora.h>
|
||
|
|
#include <SPI.h>
|
||
|
|
#include <SD.h>
|
||
|
|
#include <TFT.h> // Arduino LCD library
|
||
|
|
|
||
|
|
// the Esplora pin connected to the chip select line for SD card
|
||
|
|
#define SD_CS 8
|
||
|
|
|
||
|
|
// this variable represents the image to be drawn on screen
|
||
|
|
PImage logo;
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
// initialize the GLCD and show a message
|
||
|
|
// asking the user to open the serial line
|
||
|
|
EsploraTFT.begin();
|
||
|
|
EsploraTFT.background(255, 255, 255);
|
||
|
|
|
||
|
|
EsploraTFT.stroke(0, 0, 255);
|
||
|
|
EsploraTFT.println();
|
||
|
|
EsploraTFT.println(F("Arduino LCD Bitmap Example"));
|
||
|
|
EsploraTFT.stroke(0, 0, 0);
|
||
|
|
EsploraTFT.println(F("Open serial monitor"));
|
||
|
|
EsploraTFT.println(F("to run the sketch"));
|
||
|
|
|
||
|
|
// initialize the serial port: it will be used to
|
||
|
|
// print some diagnostic info
|
||
|
|
Serial.begin(9600);
|
||
|
|
while (!Serial) {
|
||
|
|
// wait for serial port to connect. Needed for native USB port only
|
||
|
|
}
|
||
|
|
|
||
|
|
// try to access the SD card. If that fails (e.g.
|
||
|
|
// no card present), the Esplora's LED will turn red.
|
||
|
|
Serial.print(F("Initializing SD card..."));
|
||
|
|
if (!SD.begin(SD_CS)) {
|
||
|
|
Serial.println(F("failed!"));
|
||
|
|
Esplora.writeRed(255);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
Serial.println("OK!");
|
||
|
|
|
||
|
|
// clear the GLCD screen before starting
|
||
|
|
EsploraTFT.background(255, 255, 255);
|
||
|
|
|
||
|
|
// now that the SD card can be access, try to load the
|
||
|
|
// image file. The Esplora LED will turn green or red if
|
||
|
|
// the loading went OK or not.
|
||
|
|
Esplora.writeRGB(0, 0, 0);
|
||
|
|
logo = EsploraTFT.loadImage("arduino.bmp");
|
||
|
|
if (logo.isValid()) {
|
||
|
|
Esplora.writeGreen(255);
|
||
|
|
} else {
|
||
|
|
Esplora.writeRed(255);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
// don't do anything if the image wasn't loaded correctly.
|
||
|
|
if (logo.isValid() == false) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
Serial.println(F("drawing image"));
|
||
|
|
|
||
|
|
// get a random location where to draw the image.
|
||
|
|
// To avoid the image to be draw outside the screen,
|
||
|
|
// take into account the image size.
|
||
|
|
int x = random(EsploraTFT.width() - logo.width());
|
||
|
|
int y = random(EsploraTFT.height() - logo.height());
|
||
|
|
|
||
|
|
// draw the image to the screen
|
||
|
|
EsploraTFT.image(logo, x, y);
|
||
|
|
|
||
|
|
// wait a little bit before drawing again
|
||
|
|
delay(1500);
|
||
|
|
}
|