"""
Basic Dummy class for instance.
:Date: |today|
:Author: Semi-ATE <info@Semi-ATE.org>
"""
[docs]
class Dummy(object):
"""
Dummy object for an communication-instance.
:Date: |today|
:Author: Semi-ATE <info@Semi-ATE.org>
Usable if you have no real serial device, but you want avoid an Exception if you make access to this device
"""
[docs]
def __init__(self, parent, logger, **kwargs):
"""
Initialise the Dummy instance.
Parameters
----------
parent : object
Parent object
logger : object
Logger instance
kwargs : dict
Additional keyword arguments
"""
self.parent = parent
self.logger = logger
# kwargs = {"addr": addr, "interface": interface, "backend": backend, "identify": identify, "instName": instName}
if 'message' in kwargs:
self.logger.error(kwargs['message'])
else:
self.logger.error(f'{self.parent.instName}.inst: Device or no connection found, use Dummy instead')
self._lastcmd = ''
self.bytes_in_buffer = 0
[docs]
def query(self, cmd):
"""
Query the Dummy instance.
Parameters
----------
cmd : str
Command to query
Returns
-------
str or int
Response from the Dummy instance
"""
if cmd == '*IDN?':
return f'{self.__class__}\r'
cmd = cmd[:cmd.find('?')]
try:
value = super(__class__, self).__getattribute__(cmd)
try:
value = int(value)
except Exception:
pass
self.logger.debug(f'Dummy {self.parent.instName} query {cmd} == {value}')
except Exception:
value = 0xdeadbeef
self.logger.debug(f'Dummy {self.parent.instName} query {cmd} == {hex(value)}')
return value
[docs]
def write(self, cmd):
"""
Write a command to the Dummy instance.
Parameters
----------
cmd : str
Command to write
"""
self._lastcmd = cmd[:cmd.find('?')] if cmd.find('?') > -1 else ''
cmd = cmd.split(' ')
if len(cmd) > 1:
object.__setattr__(self, cmd[0], cmd[1])
self.logger.debug(f'Dummy {self.parent.instName} write {cmd}')
[docs]
def read(self):
"""
Read a value from the Dummy instance.
Returns
-------
value : str or int
Value read from the Dummy instance
"""
# value = 0xdeadbeef
value = '-2'
self.logger.debug(f'Dummy {self.parent.instName} read value')
return value
def flush(self, arg=None):
pass
def __getattribute__(self, name):
"""
Get an attribute from the Dummy instance.
Parameters
----------
name : str
Name of the attribute
Returns
-------
value : str or int
Value of the attribute
"""
try:
value = super(__class__, self).__getattribute__(name)
except Exception:
# value = 0xdeadbeef
value = '-2'
return value
[docs]
def close(self):
"""Close the Dummy instance."""
self.logger.debug(f'Dummy {self.parent.instName} close Dummy instance')