Serial Sender

serial_sender.py

import serial
import serial.tools.list_ports

def get_ports():
    """
    Get a list of available serial ports.
    Returns:
        List of serial ports, or None if no ports are available.
    """
    serial_ports = serial.tools.list_ports.comports()
    if not serial_ports:
        print("No serial ports available.")
        return None
    return serial_ports


def select_serial_port(ports, preset_port=None):
    """
    Terminal UI for selecting a serial port. If you pass in a valid port name as preset_port, it will be
    selected automatically, so you only have to set it once per computer by changing preset_port.
    """

    if preset_port in [port.device for port in ports]:
        return preset_port
    elif preset_port is not None:
        print(f"{preset_port} is not a valid serial port: {ports}")

    print("Available serial ports:")
    for idx, port in enumerate(ports, start=1):
        print(f"{idx}: {port.device}")

    selection = input("Enter the number of the serial port you want to use: ")

    try:
        selection = int(selection)
        if 1 <= selection <= len(ports):
            selected_port = ports[selection - 1].device
            print(f"Selected port: {selected_port}")
            return selected_port
        else:
            print("Invalid selection. Please enter a valid number.")
            exit(1)
    except ValueError:
        print("Invalid input. Please enter a number.")
        exit(1)
        

if __name__ == '__main__':
    ports = get_ports()
    port = select_serial_port(ports)
    ser = serial.Serial(port, 57600)
    while True:
        input_1 = input("Enter a command: ")
        ser.write(input_1.encode())