# -*- coding: utf-8 -*-
# (c) Copyright 2019 Sensirion AG, Switzerland
from __future__ import absolute_import, division, print_function
from ..command import ShdlcCommand
from struct import pack, unpack
import logging
log = logging.getLogger(__name__)
[docs]class ShdlcCmdBaudrateBase(ShdlcCommand):
"""
SHDLC command 0x91: "Get/Set Baudrate".
"""
[docs] def __init__(self, *args, **kwargs):
super(ShdlcCmdBaudrateBase, self).__init__(0x91, *args, **kwargs)
[docs]class ShdlcCmdSetBaudrate(ShdlcCmdBaudrateBase):
[docs] def __init__(self, baudrate):
super(ShdlcCmdSetBaudrate, self).__init__(
data=pack(">I", baudrate), max_response_time=0.05,
min_response_length=0, max_response_length=0
)
[docs]class ShdlcCmdGetBaudrate(ShdlcCmdBaudrateBase):
[docs] def __init__(self):
super(ShdlcCmdGetBaudrate, self).__init__(
data=[], max_response_time=0.05,
min_response_length=4, max_response_length=4
)
[docs] def interpret_response(self, data):
"""
:return int: Baudrate [bit/s].
"""
return int(unpack(">I", data)[0])