commit 43aa5630c91fa6aa146b476c9d5ca5ced315e912
Author: Thomas Schmid <tom@lfence.de>
Date:   Tue Jul 27 21:56:18 2021 +0200

    Initial Commit
    
    Signed-off-by: Thomas Schmid <tom@lfence.de>

diff --git a/cloudlaser.service b/cloudlaser.service
new file mode 100644
index 0000000..0dd0e06
--- /dev/null
+++ b/cloudlaser.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=cloudlaser
+
+[Service]
+ExecStart=/usr/bin/python3 /home/root/laser_cloud/main.py --config /home/root/laser_cloud/config.yaml
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file
diff --git a/config.yaml b/config.yaml
new file mode 100644
index 0000000..4f5e2f0
--- /dev/null
+++ b/config.yaml
@@ -0,0 +1,11 @@
+target: 192.168.0.99
+universe: 0
+max_sleep: 10.0
+min_sleep: 3.0
+positions:
+  - x: 10
+    y: 10
+    color: "pattern"
+  - x: 50
+    y: 20
+    color: "yellow"
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..a772568
--- /dev/null
+++ b/main.py
@@ -0,0 +1,124 @@
+import stupid_artnet.StupidArtnet as artnet
+import time
+import yaml
+import argparse
+from voluptuous import Schema, Required
+import random
+from dataclasses import dataclass
+
+CONFIG_SCHEME = Schema(
+    {
+        Required('target'): str,
+        Required('universe'): int,
+        Required('min_sleep'): float,
+        Required('max_sleep'): float,
+        Required('positions'): list
+    }
+)
+
+COLORS = {'red': 40, 'green': 80, 'yellow': 1, "pattern": 120, "magic": 160}
+
+@dataclass(frozen=True)
+class Cloud:
+    x: int
+    y: int
+    color: str
+
+def laser_on(artnet):
+    artnet.set_single_value(10, 0)
+    artnet.show()
+
+def laser_off(artnet):
+    artnet.set_single_value(10, 17)
+    artnet.show()
+
+def set_mode(artnet, mode):
+    artnet.set_single_value(1, mode)
+    
+def set_color(artnet, color):
+    artnet.set_single_value(8, color)
+
+def set_pos(artnet, pos):
+    artnet.set_single_value(5, pos[0])
+    artnet.set_single_value(6, pos[1])
+
+def intTryParse(value):
+    try:
+        return int(value), True
+    except ValueError:
+        return value, False
+
+def load_config(config_path):
+    with open(config_path, "r") as f:
+        data = yaml.safe_load(f)
+    # validate config
+    CONFIG_SCHEME(data)
+
+    positions = list()
+    for p in data['positions']:
+        positions.append(Cloud(x = p['x'], y = p['y'], color=p['color']))
+
+    data['positions'] = positions
+    return data
+
+def interactive(an, config):
+    import keyboard
+
+    x = 0
+    y = 0
+
+    set_color(an, 0x100)
+
+    while True:
+        if keyboard.is_pressed("w"):
+            x = x + 1
+        if keyboard.is_pressed("s"):
+            x = x - 1
+        if keyboard.is_pressed("a"):
+            y = y - 1
+        if keyboard.is_pressed("d"):
+            y = y + 1
+        
+        set_pos(an, (x, y))
+        time.sleep(0.05)
+
+def main(args):
+    config = load_config(args.config)
+    
+    # setup laser
+    an = artnet.StupidArtnet(targetIP=config['target'], universe = config['universe'])
+    an.start()
+    set_mode(an, 0xFF)
+
+    if args.interactive:
+        interactive(an, config)
+
+    positions = config['positions']
+
+    # loop through colors
+    while True:
+        p = random.choice(positions)
+        
+        # exclude current position from next choises
+        positions = list(set(config['positions']) - set([p]))
+
+        # set position and choose color
+        set_pos(an, (p.x, p.y))
+
+        if p.color == 'random':
+            c = random.choice(list(COLORS.values()))
+        else:
+            c = COLORS.get(p.color)
+            
+        set_color(an, c)
+
+        # wait random amount of times
+        sleep_time = config['min_sleep'] + (config['max_sleep'] - config['min_sleep']) * random.uniform(0, 1)
+        time.sleep(sleep_time)
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--config")
+    parser.add_argument("--interactive", action="store_true")
+    args = parser.parse_args()
+    main(args)
diff --git a/stupid_artnet/StupidArtnet.py b/stupid_artnet/StupidArtnet.py
new file mode 100644
index 0000000..28677a4
--- /dev/null
+++ b/stupid_artnet/StupidArtnet.py
@@ -0,0 +1,364 @@
+"""(Very) Simple Implementation of Artnet.
+
+Python Version: 3.6
+Source: http://artisticlicence.com/WebSiteMaster/User%20Guides/art-net.pdf
+		http://art-net.org.uk/wordpress/structure/streaming-packets/artdmx-packet-definition/
+
+NOTES
+- For simplicity: NET and SUBNET not used by default but optional
+
+"""
+
+import socket
+from threading import Timer
+
+
+class StupidArtnet():
+	"""(Very) simple implementation of Artnet."""
+
+	UDP_PORT = 6454
+
+	def __init__(self, targetIP='127.0.0.1', universe=0, packet_size=512, fps=30, receiver_needs_even_packet_size=True, broadcast=False):
+		"""Class Initialization."""
+		# Instance variables
+		self.TARGET_IP = targetIP
+		self.SEQUENCE = 0
+		self.PHYSICAL = 0
+		self.UNIVERSE = universe
+		self.SUB = 0
+		self.NET = 0
+		self.PACKET_SIZE = self.put_in_range(packet_size, 2, 512, receiver_needs_even_packet_size)
+		self.HEADER = bytearray()
+		self.BUFFER = bytearray(self.PACKET_SIZE)
+
+		self.bMakeEven = receiver_needs_even_packet_size
+
+		self.bIsSimplified = True		# simplify use of universe, net and subnet
+
+		# UDP SOCKET
+		self.s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+		if broadcast:
+		    self.s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+
+		# Timer
+		self.fps = fps
+
+		self.make_header()
+
+	def __del__(self):
+		self.stop()
+		self.close()
+
+	def __str__(self):
+		"""Printable object state."""
+		s = "===================================\n"
+		s += "Stupid Artnet initialized\n"
+		s += "Target IP: %s:%i \n" % (self.TARGET_IP, self.UDP_PORT)
+		s += "Universe: %i \n" % self.UNIVERSE
+		if not (self.bIsSimplified):
+			s += "Subnet: %i \n" % self.SUB
+			s += "Net: %i \n" % self.NET
+		s += "Packet Size: %i \n" % self.PACKET_SIZE
+		s += "==================================="
+
+		return s
+
+	def make_header(self):
+		"""Make packet header."""
+		# 0 - id (7 x bytes + Null)
+		self.HEADER = bytearray()
+		self.HEADER.extend(bytearray('Art-Net', 'utf8'))
+		self.HEADER.append(0x0)
+		# 8 - opcode (2 x 8 low byte first)
+		self.HEADER.append(0x00)
+		self.HEADER.append(0x50)  # ArtDmx data packet
+		# 10 - prototocol version (2 x 8 high byte first)
+		self.HEADER.append(0x0)
+		self.HEADER.append(14)
+		# 12 - sequence (int 8), NULL for not implemented
+		self.HEADER.append(self.SEQUENCE)
+		# 13 - physical port (int 8)
+		self.HEADER.append(0x00)
+		# 14 - universe, (2 x 8 low byte first)
+		if (self.bIsSimplified):
+			# not quite correct but good enough for most cases:
+			# the whole net subnet is simplified
+			# by transforming a single uint16 into its 8 bit parts
+			# you will most likely not see any differences in small networks
+			v = self.shift_this(self.UNIVERSE)			# convert to MSB / LSB
+			self.HEADER.append(v[1])
+			self.HEADER.append(v[0])
+		# 14 - universe, subnet (2 x 4 bits each)
+		# 15 - net (7 bit value)
+		else:
+			# as specified in Artnet 4 (remember to set the value manually after):
+			# Bit 3  - 0 = Universe (1-16)
+			# Bit 7  - 4 = Subnet (1-16)
+			# Bit 14 - 8 = Net (1-128)
+			# Bit 15     = 0
+			# this means 16 * 16 * 128 = 32768 universes per port
+			# a subnet is a group of 16 Universes
+			# 16 subnets will make a net, there are 128 of them
+			self.HEADER.append(self.SUB << 4 | self.UNIVERSE)
+			self.HEADER.append(self.NET & 0xFF)
+		# 16 - packet size (2 x 8 high byte first)
+		v = self.shift_this(self.PACKET_SIZE)		# convert to MSB / LSB
+		self.HEADER.append(v[0])
+		self.HEADER.append(v[1])
+
+	def show(self):
+		"""Finally send data."""
+		packet = bytearray()
+		packet.extend(self.HEADER)
+		packet.extend(self.BUFFER)
+		try:
+			self.s.sendto(packet, (self.TARGET_IP, self.UDP_PORT))
+		except Exception as e:
+			print("ERROR: Socket error with exception: %s" % e)
+		finally:
+			self.SEQUENCE = (self.SEQUENCE + 1) % 256
+
+	def close(self):
+		"""Close UDP socket."""
+		self.s.close()
+
+	##
+	# THREADING
+	##
+
+	def start(self):
+		"""Starts thread clock."""
+		self.show()
+		self.__clock = Timer((1000.0 / self.fps) / 1000.0, self.start)
+		self.__clock.daemon = True
+		self.__clock.start()
+
+	def stop(self):
+		"""Stops thread clock."""
+		try:
+			self.__clock.cancel()
+		except:
+			pass
+
+	##
+	# SETTERS - HEADER
+	##
+
+	def set_universe(self, universe):
+		"""Setter for universe (0 - 15 / 256).
+
+		Mind if protocol has been simplified
+		"""
+		# This is ugly, trying to keep interface easy
+		# With simplified mode the universe will be split into two
+		# values, (uni and sub) which is correct anyway. Net will always be 0
+		if (self.bIsSimplified):
+			self.UNIVERSE = self.put_in_range(universe, 0, 255, False)
+		else:
+			self.UNIVERSE = self.put_in_range(universe, 0, 15, False)
+		self.make_header()
+
+	def set_subnet(self, sub):
+		"""Setter for subnet address (0 - 15).
+
+		Set simplify to false to use
+		"""
+		self.SUB = self.put_in_range(sub, 0, 15, False)
+		self.make_header()
+
+	def set_net(self, net):
+		"""Setter for net address (0 - 127).
+
+		Set simplify to false to use
+		"""
+		self.NET = self.put_in_range(net, 0, 127, False)
+		self.make_header()
+
+	def set_packet_size(self, packet_size):
+		"""Setter for packet size (2 - 512, even only)."""
+		self.PACKET_SIZE = self.put_in_range(packet_size, 2, 512, self.bMakeEven)
+		self.make_header()
+
+	##
+	# SETTERS - DATA
+	##
+
+	def clear(self):
+		"""Clear DMX buffer."""
+		self.BUFFER = bytearray(self.PACKET_SIZE)
+
+	def set(self, p):
+		"""Set buffer."""
+		if len(self.BUFFER) != self.PACKET_SIZE:
+			print("ERROR: packet does not match declared packet size")
+			return
+		self.BUFFER = p
+
+	def set_16bit(self, address, value, high_first=False):
+		"""Set single 16bit value in DMX buffer."""
+		if address > self.PACKET_SIZE:
+			print("ERROR: Address given greater than defined packet size")
+			return
+		if address < 1 or address > 512 - 1:
+			print("ERROR: Address out of range")
+			return
+		value = self.put_in_range(value, 0, 65535, False)
+
+		# Check for endianess
+		if (high_first):
+			self.BUFFER[address - 1] = (value >> 8) & 0xFF	# high
+			self.BUFFER[address] 		 = (value) & 0xFF 			# low
+		else:
+			self.BUFFER[address - 1] = (value) & 0xFF				# low
+			self.BUFFER[address] 		 = (value >> 8) & 0xFF	# high
+
+	def set_single_value(self, address, value):
+		"""Set single value in DMX buffer."""
+		if address > self.PACKET_SIZE:
+			print("ERROR: Address given greater than defined packet size")
+			return
+		if address < 1 or address > 512:
+			print("ERROR: Address out of range")
+			return
+		self.BUFFER[address - 1] = self.put_in_range(value, 0, 255, False)
+
+	def set_single_rem(self, address, value):
+		"""Set single value while blacking out others."""
+		if address > self.PACKET_SIZE:
+			print("ERROR: Address given greater than defined packet size")
+			return
+		if address < 1 or address > 512:
+			print("ERROR: Address out of range")
+			return
+		self.clear()
+		self.BUFFER[address - 1] = self.put_in_range(value, 0, 255, False)
+
+	def set_rgb(self, address, r, g, b):
+		"""Set RGB from start address."""
+		if address > self.PACKET_SIZE:
+			print("ERROR: Address given greater than defined packet size")
+			return
+		if address < 1 or address > 510:
+			print("ERROR: Address out of range")
+			return
+
+		self.BUFFER[address - 1] = self.put_in_range(r, 0, 255, False)
+		self.BUFFER[address] = self.put_in_range(g, 0, 255, False)
+		self.BUFFER[address + 1] = self.put_in_range(b, 0, 255, False)
+
+	##
+	# AUX
+	##
+
+	def set_simplified(self, bDoSimplify):
+		"""Builds Header accordingly.
+
+		True - Header sends 16 bit universe value (OK but incorrect)
+		False - Headers sends Universe - Net and Subnet values as protocol
+		It is recommended that you set these values with .set_net() and set_physical
+		"""
+		if (bDoSimplify == self.bIsSimplified):
+			return
+		self.bIsSimplified = bDoSimplify
+		self.make_header()
+
+	def see_header(self):
+		"""Show header values."""
+		print(self.HEADER)
+
+	def see_buffer(self):
+		"""Show buffer values."""
+		print(self.BUFFER)
+
+	def blackout(self):
+		"""Sends 0's all across."""
+		self.clear()
+		self.show()
+
+	def flash_all(self):
+		"""Sends 255's all across."""
+		packet = bytearray(self.PACKET_SIZE)
+		[255 for i in packet]
+		# for i in range(self.PACKET_SIZE):
+		# 	packet[i] = 255
+		self.set(packet)
+		self.show()
+
+	##
+	# UTILS
+	##
+
+	@staticmethod
+	def shift_this(number, high_first=True):
+		"""Utility method: extracts MSB and LSB from number.
+
+		Args:
+		number - number to shift
+		high_first - MSB or LSB first (true / false)
+
+		Returns:
+		(high, low) - tuple with shifted values
+
+		"""
+		low = (number & 0xFF)
+		high = ((number >> 8) & 0xFF)
+		if (high_first):
+			return((high, low))
+		else:
+			return((low, high))
+		print("Something went wrong")
+		return False
+
+	@staticmethod
+	def put_in_range(number, range_min, range_max, make_even=True):
+		"""Utility method: sets number in defined range.
+
+		Args:
+		number - number to use
+		range_min - lowest possible number
+		range_max - highest possible number
+		make_even - should number be made even
+
+		Returns:
+		number - number in correct range
+
+		"""
+		if (number < range_min):
+			number = range_min
+		if (number > range_max):
+			number = range_max
+		if (make_even and number % 2 != 0):
+			number += 1
+		return number
+
+
+if __name__ == '__main__':
+	print("===================================")
+	print("Namespace run")
+	target_ip = '127.0.0.1'			# typically in 2.x or 10.x range
+	universe = 15 					# see docs
+	packet_size = 20				# it is not necessary to send whole universe
+	packet = bytearray(packet_size)
+
+	a = StupidArtnet(target_ip, universe, packet_size)
+	a.set_simplified(False)
+	a.set_net(129)
+	a.set_subnet(16)
+
+	print(a)
+
+	a.set_single_value(13, 255)
+	a.set_single_value(14, 100)
+	a.set_single_value(15, 200)
+
+	print("Sending values")
+	a.show()
+	a.see_buffer()
+	a.flash_all()
+	a.see_buffer()
+	a.show()
+
+	print("Values sent")
+
+	del a
diff --git a/stupid_artnet/__init__.py b/stupid_artnet/__init__.py
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index 0000000..d8f773c
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+++ b/stupid_artnet/__init__.py
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+# nothing yet
diff --git a/stupid_artnet/__pycache__/StupidArtnet.cpython-39.pyc b/stupid_artnet/__pycache__/StupidArtnet.cpython-39.pyc
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