mirror of
https://github.com/JoelBender/bacpypes
synced 2025-09-28 22:15:23 +08:00
165 lines
5.1 KiB
Python
Executable File
165 lines
5.1 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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This application presents a 'console' prompt to the user asking for read commands
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which create ReadPropertyRequest PDUs, then lines up the coorresponding ReadPropertyACK
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and prints the value.
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"""
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import sys
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from bacpypes.debugging import bacpypes_debugging, ModuleLogger
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from bacpypes.consolelogging import ConfigArgumentParser
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from bacpypes.consolecmd import ConsoleCmd
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from bacpypes.core import run, enable_sleeping
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from bacpypes.iocb import IOCB
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from bacpypes.pdu import Address
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from bacpypes.apdu import ReadPropertyRequest, ReadPropertyACK
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from bacpypes.primitivedata import Unsigned, ObjectIdentifier
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from bacpypes.constructeddata import Array
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from bacpypes.app import BIPSimpleApplication
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from bacpypes.object import get_datatype
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from bacpypes.local.device import LocalDeviceObject
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# some debugging
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_debug = 0
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_log = ModuleLogger(globals())
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# globals
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this_application = None
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#
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# ReadPropertyConsoleCmd
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#
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@bacpypes_debugging
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class ReadPropertyConsoleCmd(ConsoleCmd):
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def do_read(self, args):
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"""read <addr> <type> <inst> <prop> [ <indx> ]"""
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args = args.split()
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if _debug: ReadPropertyConsoleCmd._debug("do_read %r", args)
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try:
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addr, obj_id, prop_id = args[:3]
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obj_id = ObjectIdentifier(obj_id).value
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datatype = get_datatype(obj_id[0], prop_id)
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if not datatype:
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raise ValueError("invalid property for object type")
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# build a request
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request = ReadPropertyRequest(
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objectIdentifier=obj_id,
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propertyIdentifier=prop_id,
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)
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request.pduDestination = Address(addr)
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if len(args) == 4:
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request.propertyArrayIndex = int(args[3])
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if _debug: ReadPropertyConsoleCmd._debug(" - request: %r", request)
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# make an IOCB
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iocb = IOCB(request)
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if _debug: ReadPropertyConsoleCmd._debug(" - iocb: %r", iocb)
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# give it to the application
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this_application.request_io(iocb)
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# wait for it to complete
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iocb.wait()
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# do something for error/reject/abort
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if iocb.ioError:
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sys.stdout.write(str(iocb.ioError) + '\n')
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# do something for success
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elif iocb.ioResponse:
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apdu = iocb.ioResponse
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# should be an ack
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if not isinstance(apdu, ReadPropertyACK):
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if _debug: ReadPropertyConsoleCmd._debug(" - not an ack")
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return
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# find the datatype
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datatype = get_datatype(apdu.objectIdentifier[0], apdu.propertyIdentifier)
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if _debug: ReadPropertyConsoleCmd._debug(" - datatype: %r", datatype)
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if not datatype:
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raise TypeError("unknown datatype")
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# special case for array parts, others are managed by cast_out
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if issubclass(datatype, Array) and (apdu.propertyArrayIndex is not None):
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if apdu.propertyArrayIndex == 0:
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value = apdu.propertyValue.cast_out(Unsigned)
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else:
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value = apdu.propertyValue.cast_out(datatype.subtype)
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else:
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value = apdu.propertyValue.cast_out(datatype)
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if _debug: ReadPropertyConsoleCmd._debug(" - value: %r", value)
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sys.stdout.write(str(value) + '\n')
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if hasattr(value, 'debug_contents'):
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value.debug_contents(file=sys.stdout)
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sys.stdout.flush()
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# do something with nothing?
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else:
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if _debug: ReadPropertyConsoleCmd._debug(" - ioError or ioResponse expected")
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except Exception as error:
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ReadPropertyConsoleCmd._exception("exception: %r", error)
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def do_rtn(self, args):
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"""rtn <addr> <net> ... """
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args = args.split()
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if _debug: ReadPropertyConsoleCmd._debug("do_rtn %r", args)
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# provide the address and a list of network numbers
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router_address = Address(args[0])
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network_list = [int(arg) for arg in args[1:]]
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# pass along to the service access point
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this_application.nsap.add_router_references(None, router_address, network_list)
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#
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# __main__
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#
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def main():
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global this_application
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# parse the command line arguments
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args = ConfigArgumentParser(description=__doc__).parse_args()
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if _debug: _log.debug("initialization")
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if _debug: _log.debug(" - args: %r", args)
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# make a device object
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this_device = LocalDeviceObject(ini=args.ini)
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if _debug: _log.debug(" - this_device: %r", this_device)
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# make a simple application
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this_application = BIPSimpleApplication(this_device, args.ini.address)
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# make a console
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this_console = ReadPropertyConsoleCmd()
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if _debug: _log.debug(" - this_console: %r", this_console)
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# enable sleeping will help with threads
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enable_sleeping()
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_log.debug("running")
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run()
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_log.debug("fini")
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if __name__ == "__main__":
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main()
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