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"""
Contains Python equivalents of the structures in CANLIB's canlib.h,
with some supporting functionality specific to Python.
"""
import ctypes
class BusStatistics(ctypes.Structure):
"""This structure is used with the method
:meth:`~can.interfaces.kvaser.canlib.KvaserBus.get_stats`.
"""
_fields_ = [
("m_stdData", ctypes.c_ulong),
("m_stdRemote", ctypes.c_ulong),
("m_extData", ctypes.c_ulong),
("m_extRemote", ctypes.c_ulong),
("m_errFrame", ctypes.c_ulong),
("m_busLoad", ctypes.c_ulong),
("m_overruns", ctypes.c_ulong),
]
def __str__(self):
return (
f"std_data: {self.std_data}, "
f"std_remote: {self.std_remote}, "
f"ext_data: {self.ext_data}, "
f"ext_remote: {self.ext_remote}, "
f"err_frame: {self.err_frame}, "
f"bus_load: {self.bus_load / 100.0:.1f}%, "
f"overruns: {self.overruns}"
)
@property
def std_data(self):
"""Number of received standard (11-bit identifiers) data frames."""
return self.m_stdData
@property
def std_remote(self):
"""Number of received standard (11-bit identifiers) remote frames."""
return self.m_stdRemote
@property
def ext_data(self):
"""Number of received extended (29-bit identifiers) data frames."""
return self.m_extData
@property
def ext_remote(self):
"""Number of received extended (29-bit identifiers) remote frames."""
return self.m_extRemote
@property
def err_frame(self):
"""Number of error frames."""
return self.m_errFrame
@property
def bus_load(self):
"""The bus load, expressed as an integer in the interval 0 - 10000 representing 0.00% - 100.00% bus load."""
return self.m_busLoad
@property
def overruns(self):
"""Number of overruns."""
return self.m_overruns
|
