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pi_lite_happy_halloween.py
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pi_lite_happy_halloween.py
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#!/usr/bin/env python
#--------------------------------------
#
# Pi-Lite Happy Halloween
#
# Author : Matt Hawkins
# Date : 08/10/2013
#
# http://www.raspberrypi-spy.co.uk/
#
#--------------------------------------
import sys
import serial
import time
# Define lists which contain frames of animations
face = ['000000000000000000010011000011000100011000110000010110000110110000110110000010110011000110011000100010011000000000000000000000',
'000000000000000000010000011011000110011000110000010110000110110000110110000010110011000110011000110010000011000000000000000000']
bat = ['010000000011000000001100000000110000110110000011111011001111100001111100011111011110110000000110000001100000011000000010000000',
'000000100000001100000011000000110000110110001011111010001111100001111100011111010110110001000110000000011000000001100000000100']
ghost = ['000000000000000000000011111001100001010000010100100010100000001100100001100000010010000010001100001000011111000000000000000000',
'000000000000000000000011111001100010010000010100000001100100001100000010100100010010000001001100001000011111000000000000000000']
spider = ['001001000010010010100100101010101000001011110000111001000111000000111000000111001001011110010101000100100101010010010001001000',
'010010010100100101101001000100101010011011101000111000000111000000111000000111000011011101100101010101001000100100101010010010']
# Combine into dictionary object
objects = {'face':face,'bat':bat,'ghost':ghost,'spider':spider}
# Define text message to scroll
message = "Happy Halloween !\r"
# Configure Pi serial port
s = serial.Serial()
s.baudrate = 9600
s.timeout = 0
s.port = "/dev/serial0"
def showObject(name,count,delay):
# Function to display frames from a specified object
# name - object to display
# count - number of times to display object
# delay - ms to wait between frames
object = objects[name]
for x in range(count):
for frame in range(len(object)):
command = "$$$F" + object[frame] + "\r"
s.write(command)
time.sleep(delay)
# Clear display
s.write("$$$ALL,OFF\r")
try:
# Open serial port
s.open()
except serial.SerialException, e:
sys.stderr.write("could not open port %r: %s\n" % (port, e))
sys.exit(1)
# Turn off all LEDs
s.write("$$$ALL,OFF\r")
time.sleep(0.5)
try:
while True:
# Get list of object names from dictionary
mykeys = objects.keys()
# Loop through each object
for x in range(len(mykeys)):
showObject(mykeys[x],5,0.5)
time.sleep(1)
s.write(message)
# Wait for scrolling message
time.sleep(8)
except KeyboardInterrupt:
print("Quit")