import serial
import time

port = '/dev/ttyUSB1'
ser = serial.Serial(port, 2400, bytesize=8, parity='N', stopbits=1, timeout=2)

# Costruisci comando QPIGS manualmente
cmd = b'QPIGS'
crc = 0xB7A9
cmd_full = cmd + bytes([crc >> 8, crc & 0xFF, 0x0D])

print(f"Invio comando: {cmd_full.hex(' ')}")
print(f"Lunghezza: {len(cmd_full)} bytes")

ser.write(cmd_full)
time.sleep(0.5)

resp = ser.read(100)
print(f"Ricevuto ({len(resp)} bytes): {resp.hex(' ')}")
print(f"ASCII: {resp}")

ser.close()