Quick and Dirty Testing thingy for a custom USB Display thing using PyUSB Display accepts a full display of 320*240*2 bytes in a 16 bit RGB format sequence. Test script pulls an image from lorempixel.com and sends it to the screen. Uses bitmap bit conversion functions from Logitech-G19-Linux-Daemon by MultiCoreNop

script.py

from PIL import Image
import urllib
import usb.core, usb.util

dev = usb.core.find(idVendor = 0x1cbe, idProduct=0x0003)

def download_image():
  urllib.urlretrieve ("http://lorempixel.com/640/480/", "image.jpg")

def rgb_to_uint16(r,g,b):
	rbit = r*2**5/255
	gbit = g*2**6/255
	bbit = b*2**5/255
	rbit = rbit if rbit <= 0b00011111 else 0b00011111
	gbit = gbit if gbit <= 0b00111111 else 0b00111111
	bbit = bbit if bbit <= 0b00011111 else 0b00011111
	valueH = (rbit << 3) | (gbit >> 3)
	valueL = (gbit << 5) | bbit
	return valueL << 8 | valueH

def init_usb():
	dev.set_configuration()

def convert_image():
	img = Image.open('image.jpg')
	access = img.load()
	if img.size != (320, 240):
		img = img.resize((320, 240), Image.CUBIC)
		access = img.load()
	data = []
	for x in range(320):
		for y in range(240):
			r,g,b = access[319-x,y]
			val = rgb_to_uint16(r,g,b)
			data.append((val >> 8) & 0xff)
			data.append((val & 0xff))
	data.reverse()
	dev.write(1,data,0)

def main():
	init_usb()
	download_image()
	convert_image()

if __name__ == '__main__':
	main()