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