Add Adafuit Macropad serial connection article

content/articles/2023/adafruit_macropad_conn_serie/files/daemon/code.py

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+from adafruit_macropad import MacroPad
+import usb_cdc
+import time
+
+macropad = MacroPad()
+serial = usb_cdc.data
+
+def exec_command (data):
+    global muted
+    try:
+        print(data)
+        command,option = data.split()
+    except:
+        command = ""
+        option = ""
+    print("cmd: {} | opt: {}".format(command, option))
+    if command == 'mute':
+        muted = True if option == 'yes' else False
+        print('muted: {}'.format(muted))
+
+timer=2
+in_data=bytearray()
+muted=False
+
+while True:
+    key_event = macropad.keys.events.get()
+    if muted:
+        macropad.pixels[1] = (255,0,0)
+    else:
+        macropad.pixels[1] = (0,255,0)
+
+    if key_event:
+        if key_event.pressed:
+            if key_event.key_number == 1:
+                print('get key 1')
+                serial.write(bytearray('mute\r\n'))
+
+    if serial.in_waiting > 0:
+        while(serial.in_waiting > 0):
+            byte = serial.read(1)
+            if byte == b'\r':
+                exec_command(in_data.decode("utf-8"))
+                in_data = bytearray()
+            else:
+                in_data += byte

content/articles/2023/adafruit_macropad_conn_serie/files/daemon/serial_daemon.py

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+#!/usr/bin/env python
+import serial
+import subprocess
+
+ser = serial.Serial(port='/dev/ttyACM1')
+
+ser.flushInput()
+print('Begin loop')
+while True:
+    line = ser.readline()
+    try:
+        command =  (line.decode()).split()
+        print('command received: {}'.format(command[0]))
+    except:
+        print('no valid command received')
+        command = ""
+
+    try:
+        if command[0] == "mute":
+            # First subprocess for toggle mote the microphone
+            subprocess.run(
+                ['pactl', 'set-source-mute', '@DEFAULT_SOURCE@', 'toggle'],
+            )
+
+            # Second one for check the states of microphone
+            result = subprocess.run(
+                ['pactl', 'get-source-mute', '@DEFAULT_SOURCE@'],
+                capture_output=True
+            )
+            message = "mute {}\r".format(result.stdout.split()[1].decode())
+            ser.write(message.encode())
+            print('command sent: {}'.format(message))
+    except Error as e:
+        print('Error in command: {}'.format(e))