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bollocks.py
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bollocks.py
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#!/usr/bin/env python2.7
import os
import sys
import time
import argparse
import ConfigParser
import StringIO
import threading
from Adafruit_GPIO import SPI
from Adafruit_WS2801 import WS2801Pixels
from json import load
from pyinotify import IN_CLOSE_WRITE
from pyinotify import Notifier
from pyinotify import ProcessEvent
from pyinotify import WatchManager
DEBUG = True
lock = threading.Lock()
class Fader(threading.Thread):
def __init__(self, pixels, led_map, color_to_rgb):
threading.Thread.__init__(self, group=None, target=None, name=None, verbose=None)
self.pixels = pixels
self.led_map = led_map
self.color_to_rgb = color_to_rgb
def run(self):
while True:
for lednr in self.led_map.keys():
r1, g1, b1 = self.led_map.get(lednr)[0]
self.pixels.set_pixel_rgb(lednr,
r1, g1, b1)
self.pixels.show()
old_map = self.led_map.get(lednr)[0]
self.led_map[lednr][0] = self.led_map[lednr][1]
self.led_map[lednr][1] = old_map
time.sleep(0.001)
class Blinker(threading.Thread):
def __init__(self, pixels, led_map, color_to_rgb):
threading.Thread.__init__(self, group=None, target=None, name=None, verbose=None)
self.pixels = pixels
self.led_map = led_map
self.color_to_rgb = color_to_rgb
def run(self):
while True:
for lednr in self.led_map.keys():
#print("BLINK", lednr)
r1, g1, b1 = self.led_map.get(lednr)[0]
if len(self.led_map.get(lednr)) == 3:
self.pixels.set_pixel_rgb(lednr,
r1, g1, b1)
self.pixels.show()
with lock:
self.led_map[lednr].append(0)
else:
with lock:
self.led_map[lednr][-1] += 1
if self.led_map[lednr][-1]*0.01 >= self.led_map[lednr][2]:
old_map = self.led_map.get(lednr)[0]
self.led_map[lednr][0] = self.led_map[lednr][1]
self.led_map[lednr][1] = old_map
self.led_map[lednr] = self.led_map[lednr][:-1]
time.sleep(0.01)
class EventHandler(ProcessEvent):
def __init__(self, set_color):
ProcessEvent.__init__(self)
self.set_color = set_color
def process_IN_CLOSE_WRITE(self, event):
try:
lednr = int(event.pathname.split(os.sep)[-1][3:])
with open(event.pathname) as fh:
line = fh.readline().strip()
except:
return
if line.find(',') > -1 and len(line.split(',')) == 6:
colorname1 = line.split(',')[0]
try:
dim1 = float(line.split(',')[1])
except:
msg = 'Bollocks: '
msg += 'Unable to parse led%i\n' % lednr
sys.stderr.write(msg)
dim1 = 100
colorname2 = line.split(',')[2]
try:
dim2 = float(line.split(',')[3])
except:
msg = 'Bollocks: '
msg += 'Unable to parse led%i\n' % lednr
sys.stderr.write(msg)
dim2 = 100
mode = line.split(',')[4]
if not mode in ["normal", "fade", "blink"]:
mode = "normal"
try:
timer = float(line.split(',')[5])
except:
msg = 'Bollocks: '
msg += 'Unable to parse led%i\n' % lednr
sys.stderr.write(msg)
timer = 1
try:
self.set_color(lednr,
colorname1,
dim1,
colorname2,
dim2,
mode,
timer)
except Exception as error:
print(error)
class Bollocks(object):
COLORMAP = {}
NUM_LEDS = 32
SPI_DEVICE = 0
SPI_PORT = 0
def __init__(self):
self.COLORMAP = self.load_colormap()
config = self.load_config()
self.NUM_LEDS = config.get('NUM_LEDS')
self.SPI_DEVICE = config.get('SPI_DEVICE')
self.SPI_PORT = config.get('SPI_PORT')
def run(self, path_to_leddir):
self.path_to_leddir = path_to_leddir
try:
self.pixels = WS2801Pixels(
self.NUM_LEDS,
spi=SPI.SpiDev(
self.SPI_PORT, self.SPI_DEVICE))
except Exception as e:
msg = 'Bollocks: '
msg += 'Unable to open SPI port: %i, device: %i\n' % (
self.SPI_PORT, self.SPI_DEVICE)
sys.stderr.write(msg)
sys.exit(-1)
self.pixels.clear()
self.pixels.show()
msg = 'Bollocks: '
msg += 'Starting bollocks v1'
self.blinker = Blinker(self.pixels, {}, self.color_to_rgb)
self.blinker.start()
self.fader = Fader(self.pixels, {}, self.color_to_rgb)
self.fader.start()
self.watch_dir()
def watch_dir(self):
wm = WatchManager()
handler = EventHandler(self.set_color)
notifier = Notifier(wm, handler)
wm.add_watch(self.path_to_leddir,
IN_CLOSE_WRITE,
rec=True)
notifier.loop()
def color_to_rgb(self, lednr, colorname, dim):
if colorname.startswith('#') or colorname.startswith('0x'):
colorname = colorname.replace('#', '')
colorname = colorname.replace('0x', '')
color = []
color.append(int(colorname[0:2], 16))
color.append(int(colorname[2:4], 16))
color.append(int(colorname[4:6], 16))
else:
color = self.COLORMAP.get(colorname).get('rgb')
color = list(int(i) for i in color.split(','))
if color is None:
msg = "led: %s: Failed to convert: %s,%s to rgb values.\n" % (
lednr, colorname, dim)
sys.stderr.write(msg)
color = [0, 0, 0] # Default to off
r = int(round((float(color[0]) / 100.0) * dim))
g = int(round((float(color[2]) / 100.0) * dim))
b = int(round((float(color[1]) / 100.0) * dim))
return (r, g, b)
def set_color(self, lednr, colorname1, dim1, colorname2, dim2, mode, timer):
r1, g1, b1 = self.color_to_rgb(lednr, colorname1, dim1)
r2, g2, b2 = self.color_to_rgb(lednr, colorname2, dim2)
if DEBUG:
print('Setting led: %i to %s (%i, %i, %i)' % (
lednr, colorname1, r1, g1, b1))
if mode == 'normal':
self.pixels.set_pixel_rgb(lednr,
r1, g1, b1)
self.pixels.show()
if lednr in self.blinker.led_map:
with lock:
self.blinker.led_map.pop(lednr)
if lednr in self.fader.led_map:
with lock:
self.fader.led_map.pop(lednr)
elif mode == 'blink':
print('mode = blink')
with lock:
self.blinker.led_map[lednr] = [
[r1, g1, b1], [r2, g2, b2], timer]
if lednr in self.fader.led_map:
with lock:
self.fader.led_map.pop(lednr)
elif mode == 'fader':
print('mode = fader')
with lock:
self.fader.led_map[lednr] = [
[r1, g1, b1], [r2, g2, b2], timer]
if lednr in self.blinker.led_map:
with lock:
self.blinker.led_map.pop(lednr)
@staticmethod
def load_config(config_file="bollocks.conf"):
config = ConfigParser.RawConfigParser()
msg = 'Unable to read or parse config file %s' % config_file
try:
raw_config = '[bollocks]\n'
with open(config_file, 'r') as fh:
raw_config += fh.read()
except:
sys.stderr.write(msg)
sys.exit(-1)
try:
config.readfp(StringIO.StringIO(raw_config))
except:
sys.stderr.write(msg)
sys.exit(-1)
numleds = config.getint('bollocks', 'numleds')
spidevice = config.getint('bollocks', 'spidevice')
spiport = config.getint('bollocks', 'spiport')
return dict(
{"NUM_LEDS": numleds,
"SPI_PORT": spiport,
"SPI_DEVICE": spidevice})
@staticmethod
def load_colormap():
dir_path = os.path.dirname(os.path.realpath(__file__))
with open(os.path.join(dir_path, 'colormap.json'), 'r') as fh:
return(load(fh))
def main(path_to_leddir):
bollocks = Bollocks()
bollocks.run(path_to_leddir)
def test():
"""
>>> path_to_leddir = '/led/'
>>> bollocks = Bollocks()
>>> print(bollocks.COLORMAP.get('red'))
{u'rgb': u'255,0,0', u'hex': u'#ff0000'}
>>> print(bollocks.color_to_rgb(0, 'red', 100))
(255, 0, 0)
>>> print(bollocks.color_to_rgb(0, 'blue', 100))
(0, 255, 0)
>>> print(bollocks.color_to_rgb(0, 'green', 100))
(0, 0, 255)
>>> print(bollocks.color_to_rgb(0, 'red3', 100))
(205, 0, 0)
>>> print(bollocks.color_to_rgb(0, '#ff0000', 100))
(255, 0, 0)
>>> print(bollocks.SPI_DEVICE)
0
>>> print(bollocks.SPI_PORT)
0
>>> print(bollocks.NUM_LEDS)
159
"""
import doctest
doctest.testmod(verbose=False)
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Bollocks book leds rock!')
parser.add_argument('--config',
default="bollocks.conf",
type=str,
help='Path to config file')
parser.add_argument('--leds',
default=32,
type=int,
help='Number of led\'s on strip')
parser.add_argument('--path',
default='/led/',
type=str,
help='Path to SHM directory')
parser.add_argument('--test',
action="store_true",
help='Run self test')
args = parser.parse_args()
if args.test:
test()
else:
msg = 'Bollocks: '
if not os.path.isdir(args.path):
msg += 'Could not open SHM path: %s \n' % args.path
sys.stderr.write(str(msg))
sys.exit(-1)
if not os.path.isfile(args.config):
msg += 'Could not read config file: %s \n' % args.path
sys.stderr.write(str(msg))
sys.exit(-1)
main(args.path)