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# coding: utf-8
"""
Interfaces contain low level implementations that interact with CAN hardware.
"""
import warnings
from pkg_resources import iter_entry_points
# interface_name => (module, classname)
BACKENDS = {
'kvaser': ('can.interfaces.kvaser', 'KvaserBus'),
'socketcan': ('can.interfaces.socketcan', 'SocketcanBus'),
'serial': ('can.interfaces.serial.serial_can','SerialBus'),
'pcan': ('can.interfaces.pcan', 'PcanBus'),
'usb2can': ('can.interfaces.usb2can', 'Usb2canBus'),
'ixxat': ('can.interfaces.ixxat', 'IXXATBus'),
'nican': ('can.interfaces.nican', 'NicanBus'),
'iscan': ('can.interfaces.iscan', 'IscanBus'),
'virtual': ('can.interfaces.virtual', 'VirtualBus'),
'neovi': ('can.interfaces.ics_neovi', 'NeoViBus'),
'vector': ('can.interfaces.vector', 'VectorBus'),
'slcan': ('can.interfaces.slcan', 'slcanBus'),
'canalystii': ('can.interfaces.canalystii', 'CANalystIIBus'),
'systec': ('can.interfaces.systec', 'UcanBus')
}
BACKENDS.update({
interface.name: (interface.module_name, interface.attrs[0])
for interface in iter_entry_points('can.interface')
})
# Old entry point name. May be removed >3.0.
for interface in iter_entry_points('python_can.interface'):
BACKENDS[interface.name] = (interface.module_name, interface.attrs[0])
warnings.warn('{} is using the deprecated python_can.interface entry point. '.format(interface.name) +
'Please change to can.interface instead.', DeprecationWarning)
VALID_INTERFACES = frozenset(list(BACKENDS.keys()) + ['socketcan_native', 'socketcan_ctypes'])
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