3boxes.py

#!/usr/bin/env python

import time
from time import sleep

import Adafruit_Nokia_LCD as LCD
import Adafruit_GPIO.SPI as SPI
import Adafruit_BBIO.GPIO as GPIO

import Image
import ImageDraw
import ImageFont

#
DC = 'P9_15'
RST = 'P9_12'
SPI_PORT = 1
SPI_DEVICE = 0

CE0="P8_12"
CE1="P8_9"
CE2="P8_10"
CES=[CE0, CE1, CE2]

print LCD.LCDWIDTH, LCD.LCDHEIGHT

for CE in CES:
    GPIO.setup(CE, GPIO.OUT)
    GPIO.output(CE, GPIO.HIGH)

disp = LCD.PCD8544(DC, RST, spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE, max_speed_hz=4000000))
disp.reset()

# Setup all the displays
for CE in CES:
    GPIO.output(CE, GPIO.LOW)
    disp.begin(contrast=40)
    disp.clear()
    disp.display()
    GPIO.output(CE, GPIO.HIGH)


image = Image.new('1', (LCD.LCDWIDTH, LCD.LCDHEIGHT))

draw = ImageDraw.Draw(image)

# empty box
def empty():
    draw.rectangle((0,0,LCD.LCDWIDTH,LCD.LCDHEIGHT), outline=255, fill = 255)

font = ImageFont.load_default()
def box(x,y,text):
    draw.rectangle((0+x,0+y,32+x,22+y), outline=0, fill=255)
    draw.text((2+x, 2+y), text, font=font)
  

#draw.ellipse((2,2,22,22), outline=0, fill=255)
#draw.rectangle((24,2,44,22), outline=0, fill=255)

def write_image(display):
    GPIO.output(display, GPIO.LOW)
    disp.image(image)
    disp.display()
    GPIO.output(display, GPIO.HIGH)

xoffset = 0
dir = 1
while True:
   for CE in CES:
       empty()
       box(xoffset,2,CE)
       write_image(CE)
   xoffset += dir
   if xoffset > 48 or xoffset < 0:
       dir = -dir