from pycaw.pycaw import AudioUtilities
from pprint import pprint
import serial
import serial.tools.list_ports
import time

def main():
    print ("Starting Arduino Mixer...\n")
    
    # Get audio sessions
    sessions = AudioUtilities.GetAllSessions()
    print (str(len(sessions)) + " audio sessions found:")
    for session in sessions:
        volume = session.SimpleAudioVolume
        print ("  " + str(session.Process))

    # Init serial connection
    ports = serial.tools.list_ports.comports()
    if len(ports) == 0:
        print("\nNo Serial ports Available")
        exit()
    else:
        print ("\nSerial ports Available:")
        for port, desc, hwid in sorted(ports):
            print("  {}: {} [{}]".format(port, desc, hwid))
        
        board = serial.Serial()
        board.baudrate = 115200
        board.port = input("\nSelect COM port: ")
        board.open()

        print ("Waiting for arduino...")
        time.sleep(5)
        board.write("<HELLO>".encode("utf-8"))
        board.write("<COUNT,3>".encode("utf-8"))
        board.write("<GETVOL,50>".encode("utf-8"))
        board.write("<NAME,Test>".encode("utf-8"))
        

if __name__ == "__main__":
    main()