This script sends hexadecimal data to a serial port, records the response along with timestamps, and logs the interactions in "serial_log.txt". Useful for serial communication testing and tracking.

custom_baudrate_hex_serial_sender.py

import serial
import sys
from datetime import datetime


def send_serial_request(port, baudrate, hex_value):
    # Create a serial port object
    ser = serial.Serial(port=port, baudrate=baudrate, timeout=1)

    # Check if the port is open
    if ser.is_open:
        print(f"Serial port opened: {port}")
    else:
        print("Failed to open serial port")
        return

    try:
        # Convert the hex value to bytes
        hex_bytes = bytearray.fromhex(hex_value)

        # Send the hex bytes over the serial port
        ser.write(hex_bytes)

        # Read the response from the serial port
        response = ser.read(
            ser.in_waiting or 20
        )  # Read all available bytes or at least 20 byte

        # Convert the response to a hex
        response = response.hex()

        # Get the current timestamp
        timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")

        # Print the response
        print("Response:", response)

        # Write the request, response, and timestamp to a file
        with open("serial_log.txt", "a+") as f:
            f.write(f"Timestamp: {timestamp}\n")
            f.write(f"Request: {hex_value}\n")
            f.write(f"Response: {response}\n")
            f.write(f"*****************************************\n")

    finally:
        # Close the serial port
        ser.close()
        print("Serial port closed")


if __name__ == "__main__":
    if len(sys.argv) != 4:
        print("Usage: python script_name.py port baudrate hex_value")
    else:
        port_name = sys.argv[1]
        baud_rate = int(sys.argv[2])
        hex_value = sys.argv[3]
        send_serial_request(port_name, baud_rate, hex_value)