linux下实现按下回车才发送的串口助手

找了半天全他妈是实时输入的，一个按回车才输入的软件都没有，遂自己写一个
Python真方便吧（）

点击查看代码

import serial
import time
import sys
import threading
import argparse
from termcolor import colored

#!/usr/bin/env python3

def parse_args():
    parser = argparse.ArgumentParser(description='Serial port communication tool with colored output')
    parser.add_argument('-D', '--device', required=True, help='Serial port device (e.g., /dev/ttyUSB0)')
    parser.add_argument('-b', '--baudrate', type=int, default=115200, help='Baudrate (default: 115200)')
    parser.add_argument('--rx-color', default='green', help='Color for received data (default: green)')
    parser.add_argument('--tx-color', default='cyan', help='Color for transmitted data (default: cyan)')
    return parser.parse_args()

def receive_thread(ser, rx_color):
    while True:
        try:
            if ser.in_waiting > 0:
                data = ser.read(ser.in_waiting)
                if data:
                    print(colored(f"RX: {data.decode('utf-8', errors='replace')}", rx_color))
        except Exception as e:
            print(colored(f"Error in receive thread: {e}", 'red'))
            break
        time.sleep(0.01)

def main():
    args = parse_args()
    
    try:
        ser = serial.Serial(
            port=args.device,
            baudrate=args.baudrate,
            bytesize=serial.EIGHTBITS,
            parity=serial.PARITY_NONE,
            stopbits=serial.STOPBITS_ONE,
            timeout=0.1
        )
        print(f"Connected to {args.device} at {args.baudrate} baud")
    except Exception as e:
        print(colored(f"Error opening serial port: {e}", 'red'))
        sys.exit(1)

    # Start receive thread
    rx_thread = threading.Thread(target=receive_thread, args=(ser, args.rx_color), daemon=True)
    rx_thread.start()
    
    # Main loop for user input
    try:
        while True:
            user_input = input("> ")
            if user_input.lower() == "exit":
                break
                
            # Add newline to the input and send
            message = user_input + '\n'
            ser.write(message.encode('utf-8'))
            print(colored(f"TX: {repr(message)}", args.tx_color))
            
    except KeyboardInterrupt:
        print("\nExiting...")
    finally:
        if ser.is_open:
            ser.close()
            print("Serial port closed")

if __name__ == "__main__":
    main()