import hid
import snap7
import struct
import logging

# Configura il logger
logging.basicConfig(filename='log.txt', level=logging.DEBUG)

plc = snap7.client.Client(lib_location="C:\SIF\Smoke_Analysis\TEMP\FilterWheel\Sorgenti\dll\snap7.dll")
plc.connect('192.168.0.1', 0, 1)
state = plc.get_cpu_state()
logging.debug(f'Stato PLC: {state}')

#vendor_id = 0x1278
#product_id = 0x0920

Device = hid.Device(vid=0x1278, pid=0x0920)

start_address = 100
length = 1

try:
    if Device:
        logging.debug("Ruota Filtri Connessa.")
    else:
        logging.warning("Ruota Filtri Disconnessa.")

    previous_data = None

    while True:
        data = Device.read(1)
        if data:
            if data[0] != previous_data:
                logging.info("Filtro Selezionato: %s", data[0])
                previous_data = data[0]

                def writeMemory(start_address, length, data):
                    try:
                        plc.mb_write(start_address, length, bytearray(struct.pack('B', data[0])))
                        logging.debug("MB100: %s", data[0])
                    except Exception as e:
                        logging.error(f"Errore durante la scrittura in memoria: {str(e)}")

                writeMemory(start_address, length, data)

except Exception as e:
    logging.error(f"Si è verificato un errore generale: {str(e)}")


finally:
    Device.close()