The TFT LCD library is based off of the Adafruit GFX graphics core library. GFX has many ready to go functions that should help you start out with your project. Its not exhaustive and we'll try to update it if we find a really useful function. Right now it supports pixels, lines, rectangles, circles, round-rects, triangles and printing text as well as rotation.
Read more about it here!
In this example, we'll show how to display a 220x176 pixel full color bitmap from a microSD card.
You'll also need an image. We suggest starting with this bitmap of a rose. If you want to later use your own image, use an image editing tool and crop your image to no larger than 160 pixels high and 128 pixels wide. Save it as a 24-bit color BMP file - it must be 24-bit color format to work, even if it was originally a 16-bit color image - becaue of the way BMPs are stored and displayed!
Names for bitmap files must not exceed 8 characters with a 3 character extension. "mybitmap.bmp" is fine. "myotherbitmap.bmp" is too long and will not be readable by the SD file system.
Copy the rose.bmp to the microSD card and insert it into the back of the breakout board.