def __init__(self,
vendor=ftdi_common.DEFAULT_VID,
product=ftdi_common.DEFAULT_PID,
interface=2,
serialname=None):
"""Fi2c constructor.
Loads libraries for libftdi, libftdii2c. Creates instance objects
(Structures), Fi2cContext, FtdiContext and Gpio to iteract with the library
and intializes them.
Args:
vendor: usb vendor id of FTDI device
product: usb product id of FTDI device
interface: interface number of FTDI device to use
serialname: string of device serialname/number as defined in FTDI eeprom.
Raises:
Fi2cError: If either ftdi or fi2c inits fail
"""
self._logger = logging.getLogger("Fi2c")
self._logger.debug("")
(self._flib, self._lib, self._gpiolib) = \
ftdi_utils.load_libs("ftdi", "ftdii2c", "ftdigpio")
self._fargs = ftdi_common.FtdiCommonArgs(vendor_id=vendor,
product_id=product,
interface=interface,
serialname=serialname)
self._fc = ftdi_common.FtdiContext()
self._fic = Fi2cContext()
self._gpio = ftdi_common.Gpio()
self._is_closed = True
err = self._flib.ftdi_init(ctypes.byref(self._fc))
if err:
raise Fi2cError("ftdi_init", err)
err = self._lib.fi2c_init(ctypes.byref(self._fic),
ctypes.byref(self._fc))
if err:
raise Fi2cError("fi2c_init", err)
self._i2c_mask = ~self._fic.gpio.mask
def __init__(self,
vendor=ftdi_common.DEFAULT_VID,
product=ftdi_common.DEFAULT_PID,
interface=2,
serialname=None):
"""Fi2c constructor.
Loads libraries for libftdi, libftdii2c. Creates instance objects
(Structures), Fi2cContext, FtdiContext and Gpio to iteract with the library
and intializes them.
Args:
vendor: usb vendor id of FTDI device
product: usb product id of FTDI device
interface: interface number of FTDI device to use
serialname: string of device serialname/number as defined in FTDI eeprom.
"""
i2c_base.BaseI2CBus.__init__(self)
self._logger = logging.getLogger('Fi2c')
self._logger.debug('')
(self._flib, self._lib, self._gpiolib) = \
ftdi_utils.load_libs('ftdi', 'ftdii2c', 'ftdigpio')
self._fargs = ftdi_common.FtdiCommonArgs(vendor_id=vendor,
product_id=product,
interface=interface,
serialname=serialname)
self._fc = ftdi_common.FtdiContext()
self._fic = Fi2cContext()
self._gpio = ftdi_common.Gpio()
self._is_closed = True
self.init()
self._i2c_mask = ~self._fic.gpio.mask