def openEx(id_str, flags=OPEN_BY_SERIAL_NUMBER):
"""Open a handle to a usb device by serial number(default), description or
location(Windows only) depending on value of flags and return an FTD2XX
instance for it"""
h = _ft.FT_HANDLE()
call_ft(_ft.FT_OpenEx, id_str, _ft.DWORD(flags), c.byref(h))
return FTD2XX(h)
def getDeviceInfoDetail(devnum=0):
"""Get an entry from the internal device info list. """
f = _ft.DWORD()
t = _ft.DWORD()
i = _ft.DWORD()
l = _ft.DWORD()
h = _ft.FT_HANDLE()
n = c.c_buffer(MAX_DESCRIPTION_SIZE)
d = c.c_buffer(MAX_DESCRIPTION_SIZE)
createDeviceInfoList()
call_ft(_ft.FT_GetDeviceInfoDetail, _ft.DWORD(devnum),
c.byref(f), c.byref(t), c.byref(i), c.byref(l), n, d, c.byref(h))
return {'index': devnum, 'flags': f.value, 'type': t.value,
'id': i.value, 'location': l.value, 'serial': n.value,
'description': d.value, 'handle': h}
def getDeviceInfoDetail(devnum=0, update=True):
"""Get an entry from the internal device info list. Set update to
False to avoid a slow call to createDeviceInfoList."""
f = _ft.DWORD()
t = _ft.DWORD()
i = _ft.DWORD()
l = _ft.DWORD()
h = _ft.FT_HANDLE()
n = c.c_buffer(MAX_DESCRIPTION_SIZE)
d = c.c_buffer(MAX_DESCRIPTION_SIZE)
# createDeviceInfoList is slow, only run if update is True
if update: createDeviceInfoList()
call_ft(_ft.FT_GetDeviceInfoDetail, _ft.DWORD(devnum),
c.byref(f), c.byref(t), c.byref(i), c.byref(l), n, d, c.byref(h))
return {'index': devnum, 'flags': f.value, 'type': t.value,
'id': i.value, 'location': l.value, 'serial': n.value,
'description': d.value, 'handle': h}
def open(dev=0):
"""Open a handle to a usb device by index and return an FTD2XX instance for
it"""
h = _ft.FT_HANDLE()
call_ft(_ft.FT_Open, dev, c.byref(h))
return FTD2XX(h)
