build rpi gpio strip udp client

clients/strip-rpi-udp/rpi_udp_strip.py

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+
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+from util.RGBStrip import RGBStrip as RGBStrip
+from util.UDPListner import UDPListner as UDPListner
+import sys
+
+#use the BCM pin numbers here
+rgbStrips = [
+    #RGBStrip("Test Dahem", 4, 17 , 22),
+    RGBStrip("Unter Theke", 20, 16 , 21),
+    RGBStrip("Über Theke", 22, 13, 27),
+    RGBStrip("Fensterbank", 5, 26, 6)
+]
+# set remote address and port
+remoteaddr = ("192.168.0.255",8002)
+
+
+udplistners = []
+for rgbStrip in rgbStrips:
+    udplistners.append(UDPListner(rgbStrip,remoteaddr))
+
+while True:
+    try:
+        for udplistner in udplistners:
+            udplistner.loop()
+    except KeyboardInterrupt:
+        for rgbStrip in rgbStrips:
+            rgbStrip.stop()
+        sys.exit()

clients/strip-rpi-udp/util/RGBStrip.py

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+try:
+    import RPi.GPIO as GPIO
+except ImportError:
+    print("Install RPi.GPIO")
+# setup PRi.GPIO
+GPIO.setmode(GPIO.BCM)
+
+class RGBStrip:
+    STRIP_NAME = None
+    # GPIO PWM Frequenz
+    hertz = 100 
+
+    RED_PIN = None
+    GREEN_PIN = None
+    BLUE_PIN = None
+
+    RED_PWM = None
+    GREEN_PWM = None
+    BLUE_PWM = None
+
+
+    def __init__(self,STRIP_NAME,RED_PIN,GREEN_PIN,BLUE_PIN):
+        self.STRIP_NAME = STRIP_NAME
+        self.RED_PIN = RED_PIN
+        self.GREEN_PIN = GREEN_PIN
+        self.BLUE_PIN = BLUE_PIN
+
+        # setup RED
+        GPIO.setup(self.RED_PIN, GPIO.OUT)
+        self.RED_PWM = GPIO.PWM(self.RED_PIN, self.hertz)
+        self.RED_PWM.start(0)
+        # setup GREEN
+        GPIO.setup(self.GREEN_PIN, GPIO.OUT)
+        self.GREEN_PWM = GPIO.PWM(self.GREEN_PIN, self.hertz)
+        self.GREEN_PWM.start(0)
+        # setup BLUE
+        GPIO.setup(self.BLUE_PIN, GPIO.OUT)
+        self.BLUE_PWM = GPIO.PWM(self.BLUE_PIN, self.hertz)
+        self.BLUE_PWM.start(0)
+
+    def RGB(self,red,green,blue,brightness = 100):
+        #print(self.STRIP_NAME,red,green,blue)
+        if(red < 0):
+            red = 0
+        if(red > 255):
+            red = 255
+        
+        if(green < 0):
+            green = 0
+        if(green > 255):
+            green = 255
+        
+        if(blue < 0):
+            blue = 0
+        if(blue > 255):
+            blue = 255
+        
+        if(brightness < 0):
+            brightness = 0
+        if(brightness > 100):
+            brightness = 100
+        self.RED_PWM.ChangeDutyCycle(round(red/255*100,2))
+        self.GREEN_PWM.ChangeDutyCycle(round(green/255*100,2))
+        self.BLUE_PWM.ChangeDutyCycle(round(blue/255*100,2))
+
+    def stop(self):
+        self.RED_PWM.ChangeDutyCycle(0)
+        self.GREEN_PWM.ChangeDutyCycle(0)
+        self.BLUE_PWM.ChangeDutyCycle(0)
+        self.RED_PWM.stop()
+        self.GREEN_PWM.stop()
+        self.BLUE_PWM.stop()

clients/strip-rpi-udp/util/UDPListner.py

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+from random import randint
+import time
+import socket
+
+class UDPListner:
+    lastping = time.time()-1
+
+    def __init__(self, rgbStrip, remoteaddr):
+        self.rgbStrip = rgbStrip
+        self.remoteaddr = remoteaddr
+        self.localaddr = ("",randint(6000,7000))
+        self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+        self.socket.settimeout(.002)
+
+    def loop(self):
+        #print(time.time() - self.lastping)
+        if time.time() - self.lastping > .5 :
+            self.socket.sendto("s:ping".encode(), self.remoteaddr)
+            self.lastping = time.time()
+        try:
+            data, address = self.socket.recvfrom(4096)
+            data = data.decode('UTF-8')
+            #print(data[0],data[1])
+            if data:
+                if data[0] is "s" and data[1] is "r":
+                    self.socket.sendto(("r:1:"+self.rgbStrip.STRIP_NAME+":1").encode(), address)
+                if data[0] is "d":
+                    self.rgbStrip.RGB(self.getRgbVal(data,1),self.getRgbVal(data,4),self.getRgbVal(data,7))
+        except socket.timeout:
+            pass
+
+    def getRgbVal(self,data,pos):
+        return 100*int(data[pos]) + 10*int(data[pos+1]) + int(data[pos+2])