Add mute and input switching button controls

button.py

@@ -0,0 +1,84 @@
+import utime
+from machine import Pin
+
+
+class Button:
+    DEBOUNCE_MS = 50
+    DOUBLECLICK_MS = 400
+    HOLD_MS = 1000
+
+    def __init__(self, pin: Pin) -> None:
+        self._pin = pin
+        self._pressed = False
+        self._clicked = False
+        self._doubleclicked = False
+        self._held = False
+
+        self._debounce = 0
+        self._hold = 0
+        self._doubleclick = 0
+
+        if self._pin():
+            self._debounce = utime.ticks_ms()
+
+    def update(self) -> None:
+        now = utime.ticks_ms()
+
+        if self._pin():
+            if self._debounce and now - self._debounce >= self.DEBOUNCE_MS:
+                self._debounce = 0
+                self._pressed = True
+                self._hold = now
+            elif not self._pressed and not self._debounce:
+                self._debounce = now
+            elif self._hold and now - self._hold >= self.HOLD_MS:
+                self._hold = 0
+                self._held = True
+        else:
+            if self._pressed:
+                self._pressed = False
+                if self._doubleclick:
+                    if now - self._doubleclick <= self.DOUBLECLICK_MS:
+                        self._doubleclicked = True
+                        self._doubleclick = 0
+                        self._hold = 0
+                        self._held = False
+                else:
+                    self._doubleclick = now
+            if self._doubleclick and now - self._doubleclick > self.DOUBLECLICK_MS:
+                if not self._held:
+                    self._clicked = True
+                self._doubleclick = 0
+                self._hold = 0
+                self._held = False
+
+    def pressed(self) -> bool:
+        return self._pressed
+
+    def was_clicked(self) -> bool:
+        if self._clicked:
+            self._clicked = False
+            return True
+        return False
+
+    def was_double_clicked(self) -> bool:
+        if self._doubleclicked:
+            self._doubleclicked = False
+            return True
+        return False
+
+    def held(self) -> bool:
+        return self._held
+
+
+if __name__ == "__main__":
+    button = Button(Pin(36, Pin.IN))
+    while True:
+        button.update()
+        if button.was_clicked():
+            print("CLICKED")
+        if button.was_double_clicked():
+            print("DOUBLE-CLICKED")
+        if button.held():
+            print("HELD")
+        utime.sleep_ms(10)

main.py

@@ -4,6 +4,7 @@ import json
 import machine
 import network
 import ubinascii
+import uasyncio
 import utime
 
 from umqtt.simple import MQTTClient
@@ -11,6 +12,7 @@ from umqtt.simple import MQTTClient
 import cd4052
 import ssd1306
 import mcp4
+from button import Button
 from rotary_irq_esp import RotaryIRQ
 from statetree import StateTree
 
@@ -42,6 +44,7 @@ rotary = RotaryIRQ(
     pull_up=True,
 )
 rotary_value = rotary.value()
+rotary_button = Button(Pin(36, Pin.IN))
 
 try:
     i2c = SoftI2C(sda=Pin(21), scl=Pin(22))
@@ -91,7 +94,16 @@ def on_message(topic, msg):
 
 
 def loop():
-    global mqtt, state, last_update, rotary, rotary_value
+    global mqtt, state, last_update, rotary, rotary_button, rotary_value
+
+    rotary_button.update()
+    if rotary_button.was_clicked():
+        switch.toggle_mute()
+    if rotary_button.was_double_clicked():
+        if switch.channel() >= 3:
+            switch.select(0)
+        else:
+            switch.select(switch.channel() + 1)
 
     state["volume"]["left"] = pot.read(0)
     state["volume"]["right"] = pot.read(1)
@@ -275,4 +287,4 @@ def loop():
 
 while True:
     loop()
-    utime.sleep(0.1)
+    utime.sleep_ms(10)