add button inputs

requirements.txt

@@ -1,2 +1,3 @@
 paho-mqtt
 adafruit-circuitpython-ht16k33
+gpiozero

src/controller.py

@@ -3,9 +3,14 @@ import paho.mqtt.client as mqtt
 import time
 import board
 import busio
+
 from adafruit_ht16k33 import segments
 from enum import Enum
 
+from gpiozero import Button
+
+import socket #to get local ip
+
 __TOPIC_BRIGHTNESS__ = "brightness"
 __TOPIC_SCROLL_INTERVAL__ = "scrollinterval"
 __TOPIC_TEXT_STATIC__ = "textstatic"
@@ -14,6 +19,8 @@ __TOPIC_TEXT_SCROLL__ = "textscroll"
 __TOPIC_TEXT_MARQUEE__ = "textmarquee"
 __TOPIC_TEXT_PAN__ = "textpan"
 
+__TOPIC_BUTTON__ = "button"
+
 NUMDIGITS = 8
 
 class Mode(Enum):
@@ -29,7 +36,6 @@ class Controller:
 	displayR = None
 	
 
-
 	def __init__(self, base_topic, mqtt_host, mqtt_port = 1883):
 
 		self.scroll_interval = 0.25
@@ -39,6 +45,17 @@ class Controller:
 		self.last_scrollupdate = 0
 		self.mode = Mode.STATIC
 		
+		self.buttonLeft = Button(23, pull_up=False, hold_time=1) # https://gpiozero.readthedocs.io/en/stable/api_input.html
+		self.buttonRight = Button(24, pull_up=False, hold_time=1) # with deactivated pullup input is active high
+		
+		self.buttonLeft.when_released = self.buttonLeft_released
+		self.buttonLeft.when_held = self.buttonLeft_held
+		self.buttonLeft_heldFlag = False #if true, next released will be ignored
+		
+		self.buttonRight.when_released = self.buttonRight_released
+		self.buttonRight.when_held = self.buttonRight_held
+		self.buttonRight_heldFlag = False #if true, next released will be ignored
+		
 		
 		# Create the I2C interface.
 		self.i2c = busio.I2C(board.SCL, board.SDA)
@@ -63,8 +80,7 @@ class Controller:
 		self.mqtt.connect(mqtt_host, mqtt_port)
 		self.topic = base_topic
 		
-		self.displayL.print("LEFT")
-		self.displayR.print("RIGH")
+		
 
 
 	def on_disconnect(self, client, userdata, rc):
@@ -138,8 +154,27 @@ class Controller:
 	def on_connect(self, client, userdata, flags, rc):
 		print("Connected to MQTT Broker")
 		self.mqtt.subscribe(self.topic + "/#")
+		
 		self.connected = True
 		
+		self.mqtt.publish(self.topic + "/" + "$state", "ready", 1 )
+		
+		self.mqtt.publish(self.topic + "/" + "$hostname", socket.gethostname() , 1 )
+		self.mqtt.publish(self.topic + "/" + "$localip", self.get_ip() , 1 )
+		
+	
+	def get_ip(self):
+		s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+		try:
+			# doesn't even have to be reachable
+			s.connect(('10.255.255.255', 1))
+			IP = s.getsockname()[0]
+		except Exception:
+			IP = '127.0.0.1'
+		finally:
+			s.close()
+		return IP
+	
 	def writeSegment(self, _digit, _char, clear=False):
 		if _digit>=0 and _digit<4:
 			if clear:
@@ -209,6 +244,7 @@ class Controller:
 		while run:
 			self.mqtt.loop(0.1) #with block timeout
 			
+
 			if self.displayL is not None and self.displayR is not None: #displays initialized
 			
 				if self.mode == Mode.STATIC or self.mode == Mode.ONCE:
@@ -259,3 +295,34 @@ class Controller:
 		self.mode == Mode.STATIC #Stop animation
 		self.text=" ".ljust(NUMDIGITS) #empty
 		self.displayTextOffset(self.text, 0) #update immediately
+		
+	
+	def buttonLeft_released(self):
+		if self.buttonLeft_heldFlag:
+			self.buttonLeft_heldFlag = False
+		else:
+			print("button left pressed")
+			if self.connected:
+				self.mqtt.publish(self.topic + "/" + __TOPIC_BUTTON__, "lpress", 1 )
+			
+		
+	def buttonLeft_held(self):
+		print("button left held")
+		self.buttonLeft_heldFlag = True
+		if self.connected:
+			self.mqtt.publish(self.topic + "/" + __TOPIC_BUTTON__, "lhold", 1 )
+		
+	def buttonRight_released(self):
+		if self.buttonRight_heldFlag:
+			self.buttonRight_heldFlag = False
+		else:
+			print("button right pressed")
+			if self.connected:
+				self.mqtt.publish(self.topic + "/" + __TOPIC_BUTTON__, "rpress", 1 )
+		
+	def buttonRight_held(self):
+		print("button right held")
+		self.buttonRight_heldFlag = True
+		if self.connected:
+			self.mqtt.publish(self.topic + "/" + __TOPIC_BUTTON__, "rhold", 1 )
+