def list_devices(filter_ids=True):
"""
List all connected devices.
Return list of tuples ``(conn, description)``.
If ``filter_ids==True``, only leave devices with Tholabs-like IDs (8-digit numbers).
Otherwise, show all devices (some of them might not be Thorlabs-related).
"""
def _is_thorlabs_id(id):
return re.match(rb"^\d{8}$",id[0]) is not None
ids=ft232.list_devices()
if filter_ids:
ids=[id for id in ids if _is_thorlabs_id(id)]
return ids
def __init__(self, terminal, opts):
# Lazy-init FT232.
# On windows systems, if D2XX drivers are not installed
try:
import ft232
except:
print("ERROR: Failed to load pyft232")
print("ERROR: Is D2XX/libftdi installed?")
sys.exit(1)
# HACK: On some linux systems (debian buster) we can't free libftdi context
# HACK: or things will segfault
# HACK: This hack causes intentional memory leak, but prevents segfault
def dummy(x):
pass
try:
ft232.libftdi.ftdi.ftdi_free = dummy
except:
pass
serial = opts["mt12505_serial"]
if opts["mt12505_serial"] == None:
devices = ft232.list_devices()
devices = self.__to_mt12505_devices(devices)
if len(devices) == 0:
raise Exception("ERROR: No MT12505 devices found")
if len(devices) == 1:
serial = devices[0][0]
else:
print(
"WARNING: Multiple MT12505 devices found, please specify serial"
)
for d in devices:
print(f"Serial: {d[0]} Description: {d[1]}")
sys.exit(1)
self.sp = ft232.Ft232(serial, baudrate=115200)
self.sp.cbus_setup(mask=0xf, init=0xf)
return super().__init__(terminal, opts)