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bacnet-stack/demo/epics/bacepics.h
2013-03-21 22:53:31 +01:00

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4.9 KiB
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/**************************************************************************
*
* Copyright (C) 2006 Steve Karg <skarg@users.sourceforge.net>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
#ifndef BACEPICS_H_
#define BACEPICS_H_
/** @file epics/bacepics.h Header for tool to generate EPICS-usable output. */
/** @defgroup BACEPICS Tool to generate EPICS-usable output.
* @ingroup Demos
* This tool will generate a list of Objects and their properties for use in
* an EPICS file.
* You will still need to provide the front part of the EPICS (see file
* demo/server/epics_vts3.tpi) which cannot be easily determined by observation,
* but this tool communicates with the test device and does the grunt work of
* creating the list of Objects and the supported properties for
* each of those Objects.
*
* Usage:
* bacepics [-v] [-p sport] [-t target_mac] device-instance
* -v: show values instead of '?'
* -p: Use sport for "my" port, instead of 0xBAC0 (BACnet/IP only)
* Allows you to communicate with a localhost target.
* -t: declare target's MAC instead of using Who-Is to bind to
* device-instance. Format is "C0:A8:00:18:BA:C0" (as usual)
*
* Examples:
* ./bacepics -v 1234
* where the device instance to be addressed is 1234
* and the optional -v prints values out rather than the '?' that
* the EPICS format for VTS3 wants.
* ./bacepics -p 0xBAC1 -t "7F:0:0:1:BA:C0" 4194303
* communicates with the BACnet device on localhost (127.0.0.1), using
* port 47809 as "my" source port so it doesn't conflict with
* the device's port 47808.
*
*
* The tool follows an optimal approach which will use efficient communication
* means if available or else fall back to simple-minded methods.
* Starting with the Device Object, the tool will
* - Try to fetch ALL the Properties with RPM
* - If RPM is not supported, will use coded properties in demo/object folder
* - If response is too big to fit (without segmentation), then will fetch
* ALL again with array index of 0, which should result mostly in errors
* but will provide the list of supported properties.
* - If that succeeds, build the list of properties to be accessed. <br>
* - If no RPM or failed to get ALL properties from the target device, then
* fetch the coded Required and Optional properties from the demo/object
* folder for this object type, and use this to build the list of
* properties to be accessed.
* - If the Fetch All succeeded, print the values for each property
* - Otherwise, for each property in the list for this object,
* - Request the single property value with ReadProperty (RP)
* - From the response, print the property's value
* The Device Object will have fetched the Object List property and built a list
* of objects from that; use it now to cycle through each other Object and
* repeat the above process to get and print out their property values.
*/
/** The allowed States of the bacepics State Machine.
* Important to distinguish the request from the response phases as well
* as which approach will get all the properties for us.
* @ingroup BACEPICS
*/
typedef enum {
/** Initial state to establish a binding with the target device. */
INITIAL_BINDING,
/** Get selected device information and put out the heading information. */
GET_HEADING_INFO, GET_HEADING_RESPONSE, PRINT_HEADING,
/** Getting ALL properties and values at once with RPM. */
GET_ALL_REQUEST, GET_ALL_RESPONSE,
/** Getting ALL properties with array index = 0, just to get the list. */
GET_LIST_OF_ALL_REQUEST, GET_LIST_OF_ALL_RESPONSE,
/** Processing the properties individually with ReadProperty. */
GET_PROPERTY_REQUEST, GET_PROPERTY_RESPONSE,
/** Done with this Object; move onto the next. */
NEXT_OBJECT
} EPICS_STATES;
#endif /* BACEPICS_H_ */