101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (c) 2017, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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import sys
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import abc
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import logging
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import serial
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import time
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ABC = abc.ABC if sys.version_info >= (3, 4) else abc.ABCMeta('ABC', (), {})
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logger = logging.getLogger(__name__)
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class RfShieldController(ABC):
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@abc.abstractmethod
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def shield(self):
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pass
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@abc.abstractmethod
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def unshield(self):
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pass
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@abc.abstractmethod
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def __enter__(self):
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pass
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@abc.abstractmethod
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def __exit__(self, *args, **kwargs):
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pass
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class RfSwitchController(RfShieldController):
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def __init__(self, channel, port):
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self._channel = channel
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self._port = port
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self._conn = None
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def shield(self):
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self._display_string('CLOSE {}'.format(self._channel))
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self._write('CLOSE (@{})'.format(self._channel))
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def unshield(self):
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self._display_string('OPEN {}'.format(self._channel))
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self._write('OPEN (@{})'.format(self._channel))
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def _write(self, data):
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return self._conn.write('{}\r\n'.format(data))
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def _display_string(self, string):
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self._write('DIAGNOSTIC:DISPLAY "{}"'.format(string))
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def __enter__(self):
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self._conn = serial.Serial(self._port, 9600)
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if not self._conn.isOpen():
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self._conn.open()
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self._write('')
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time.sleep(1)
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return self
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def __exit__(self, *args, **kwargs):
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if self._conn:
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self._conn.close()
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self._conn = None
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CONTROLLERS = {'RF_SWITCH': RfSwitchController}
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def get_rf_shield_controller(shield_type, params):
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if shield_type in CONTROLLERS:
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return CONTROLLERS[shield_type](**params)
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logger.exception('Unknown RF shield controller type: {}'.format(shield_type))
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