75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
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#!/usr/bin/env python
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import struct
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import socket
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import time
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from random import random
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class WS2801Command:
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# command definitions
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SET_COLOR = 0
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FADE_COLOR = 1
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ADD_COLOR = 2
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SET_FADESTEP = 3
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def __init__(self, action = SET_COLOR, module = 0, d0 = 0, d1 = 0, d2 = 0):
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self.action = action
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self.module = module
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self.d0 = d0
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self.d1 = d1
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self.d2 = d2
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def serialize(self):
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meta = (self.action << 6) | self.module
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return struct.pack("BBBB", meta, self.d0, self.d1, self.d2)
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class WS2801:
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def __init__(self, host, port):
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self.__commands = []
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# create the UDP socket
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family, socktype, proto, canonname, sockaddr = socket.getaddrinfo(host, port, 0, socket.SOCK_DGRAM)[0]
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self.__socket = socket.socket(family, socktype, proto)
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self.__socket.connect(sockaddr)
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def commit(self):
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# send the data
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packet = ''
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for command in self.__commands:
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packet = packet + command.serialize()
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if packet:
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self.__socket.send(packet)
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self.__commands = []
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def set_fadestep(self, fadestep):
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# add a "set fadestep" command
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self.__commands.append(WS2801Command(WS2801Command.SET_FADESTEP, d0 = fadestep))
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def set_color(self, module, r, g, b):
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# add a "set color" command
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self.__commands.append(WS2801Command(WS2801Command.SET_COLOR, module, r, g, b))
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def fade_color(self, module, r, g, b):
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# add a "fade to color" command
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self.__commands.append(WS2801Command(WS2801Command.FADE_COLOR, module, r, g, b))
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def add_color(self, module, r, g, b):
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# add a "add to color" command
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self.__commands.append(WS2801Command(WS2801Command.ADD_COLOR, module, r, g, b))
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if __name__ == "__main__":
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w = WS2801("192.168.2.222", 2703)
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w.set_fadestep(1);
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while True:
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w.set_color(10, 255, 255, 255)
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for i in range(20):
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w.fade_color(i, 0, 0, 0)
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w.commit()
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time.sleep(0.2)
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