Merge pull request #26 from marcmerlin/master

Added drawBitmap and demos to display bitmaps.

examples/pictureEmbed/pictureEmbed.ino

@@ -0,0 +1,78 @@
+// Simple example to embed pictures in your sketch
+// and draw on the ILI9341 display with writeRect()
+//
+// By Frank Bösing
+//
+// https://forum.pjrc.com/threads/32601-SPI-Library-Issue-w-ILI9341-TFT-amp-PN532-NFC-Module-on-Teensy-3-2?p=94534&viewfull=1#post94534
+
+#include "SPI.h"
+#include <Adafruit_ILI9341.h>
+
+// New picture format, as converted by 
+// http://www.rinkydinkelectronics.com/t_imageconverter565.php
+#include "picture1.c"
+
+// Original picture convertion, with a header to skip (from Frank Bösing)
+#include "picture2.c"
+
+// My own logo for the IoTuz board (rolled out in Tasmania)
+#include "tasmanian-devil.c"
+
+/* GIMP (https://www.gimp.org/) can also be used to export the image using the following steps:
+
+    1. File -> Export As
+    2. In the Export Image dialog, use 'C source code (*.c)' as filetype.
+    3. Press export to get the export options dialog.
+    4. Type the desired variable name into the 'prefixed name' box.
+    5. Uncheck 'GLIB types (guint8*)'
+    6. Check 'Save as RGB565 (16-bit)'
+    7. Press export to save your image.
+
+  Assuming 'image_name' was typed in the 'prefixed name' box of step 4, you can have to include the c file as above,
+  using the image can be done with:
+
+    tft.drawBitmap(0, 0, image_name.width, image_name.height, (uint16_t*)(image_name.pixel_data));
+
+  See also https://forum.pjrc.com/threads/35575-Export-for-ILI9341_t3-with-GIMP 
+*/
+
+// Normal Connections
+#define TFT_DC       9
+#define TFT_CS      10
+#define TFT_RST    255  // 255 = unused, connect to 3.3V
+#define TFT_MOSI    11
+#define TFT_SCLK    13
+#define TFT_MISO    12
+
+// Alternate Connections with Teensy Audio Shield
+//#define TFT_DC      20
+//#define TFT_CS      21
+//#define TFT_RST    255  // 255 = unused, connect to 3.3V
+//#define TFT_MOSI     7
+//#define TFT_SCLK    14
+//#define TFT_MISO    12
+
+//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_MISO);
+Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
+
+
+void setup() {
+  tft.begin();
+  tft.setRotation(3);
+  tft.fillScreen(ILI9341_BLACK);
+  tft.drawBitmap(33, 32, 256, 174, (uint16_t*)picture1);
+  delay(1000);
+  tft.fillScreen(ILI9341_BLACK);
+  tft.drawBitmap(1, 1, 256, 174, (uint16_t*)picture2+35);
+  delay(2000);
+  tft.drawBitmap(0, 0, 320, 240, (uint16_t*)picture3);
+  delay(2000);
+  for (int16_t addr = 320; addr -=2; addr >= 0)
+  {
+    tft.scrollTo(addr);
+    delay(10);
+  }
+}
+
+void loop(void) {
+}