from flask import Flask, render_template, request
import serial
import time

app = Flask(__name__)

port = '/dev/tty.usbmodem101' 
baudrate = 9600
ser = serial.Serial(port, baudrate, timeout=1)

def send_serial_command(command):
    try:
        if not ser.isOpen():
            ser.open()
        ser.write(command.encode('utf-8'))
        time.sleep(1)
        response = ser.read(ser.inWaiting()).decode('utf-8')
        ser.close()
        return response or "Data transmission failed" 
    except serial.SerialException as e:
        return f"Serial communication error: {e}"

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/send_command', methods=['POST'])
def send_command():
    command = request.form['command']
    response = send_serial_command(command)
    return response

if __name__ == '__main__':
    app.run(debug=True)