copilot

Python
import serial
import time

# Configuration for serial communication
ser = serial.Serial(
    port='/dev/ttyUSB0',  # Replace with your actual port
    baudrate=115200,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout=1
)

def send_data(data):
    """
    Send data to the microcontroller.
    
    :param data: The data to send.
    :type data: str
    """
    if ser.is_open:
        ser.write(data.encode())
        print(f"Sent: {data}")
    else:
        print("Error: Serial port is not open.")

def receive_data():
    """
    Receive data from the microcontroller.
    
    :return: The received data.
    :rtype: str
    """
    if ser.is_open:
        data = ser.readline().decode().strip()
        print(f"Received: {data}")
        return data
    else:
        print("Error: Serial port is not open.")
        return ""

# Main communication loop
try:
    while True:
        # Example of sending data
        send_data("Hello, Microcontroller!")
        
        # Wait before receiving data
        time.sleep(2)
        
        # Example of receiving data
        received = receive_data()
        
        # Wait before sending the next message
        time.sleep(2)
        
except KeyboardInterrupt:
    print("Program interrupted by user.")

finally:
    # Close the serial port before exiting
    if ser.is_open:
        ser.close()

1. Serial Port Configuration: The serial.Serial class is used to configure parameters like port, baudrate, parity, stopbits, bytesize, and timeout.
2. Sending Data: The send_data function encodes a string message to bytes and sends it over the serial port.
3. Receiving Data: The receive_data function reads a line from the serial port and decodes it to a string. It prints the received data to the console.
4. Main Loop: The script continuously sends and receives data to/from the microcontroller with a 2-second delay between actions. It can be interrupted with a keyboard interrupt ($Ctrl+C$).

Sh
pip install pyserial