CAN.py 文件源码

def recv(self):
        try:
            data = super().recv(Message.SIZE)
        except OSError as e:
            if e.errno == errno.ENETDOWN:
                raise BusDown
            raise
        res = ioctl(self, 0x8906, struct.pack("@LL", 0, 0))
        seconds, microseconds = struct.unpack("@LL", res)
        timestamp = seconds + microseconds / 1000000
        msg = Message.from_bytes(data)
        msg.timestamp = timestamp
        return msg