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OpenLDV Programmer’s Guide 135
installing the software does not return the default values to these
profiles. However, the xDriver Profile Editor allows you to restore any
profile to its default value.
• Install your profiles with temporary Registry entries that are overwritten
each time the software is installed. In this case, the default values would
be restored each time the software is installed, and all changes that were
configured by the user since the last installation would be lost.
After you create a profile to use your custom lookup extension component and
(optionally) start the Connection Broker, you can begin using OpenLDV or LNS
applications (such as the LonMaker Integration Tool) to access the networks that
you will use with xDriver.
Alternatively, you can begin creating LNS applications that use xDriver. See
Chapter 7, LNS Programming with xDriver, on page 137, for programming
samples that can assist you in creating these new applications.
Starting the Connection Broker
The Connection Broker must be running for xDriver to receive uplink session
requests. However, it is not required for downlink sessions.
The Connection Broker automatically stops if there are no profiles with uplink
session handling enabled. In addition, the Connection Broker must be stopped
and restarted each time uplink session handling for a profile is enabled or
disabled.
The Connection Broker runs as an interactive service, which allows your
applications that use the Connection Broker to display relevant dialogs for user
interaction. However, any user dialogs are displayed in a separate Windows
desktop from the one the user is logged into, so that a user might not reply to
these dialogs. Thus, an uplink application should use an interface that does not
require user interaction.
To start the Connection Broker, perform the following tasks:
1. Open the Services administrative control panel applet:
Windows 7: Control Panel → System and Security → Administrative
Tools → Services
Windows XP: Control Panel → Administrative Tools → Services
2. Locate the entry for the Echelon xDriver Connection Broker, as
shown in Figure 36 on page 136.
- OpenLDV 1
- Programmer’s Guide 1
- Welcome 3
- Audience 3
- Examples 4
- Related Documentation 4
- Table of Contents 5
- Introduction 9
- ONWORKS network: 10
- OpenLDV Driver 11
- Client Applications 11
- Network Interfaces 12
- Installing the OpenLDV SDK 14
- Using the OpenLDV API 17
- ONWORKS network 18
- Application Layer 20
- Presentation Layer 21
- Overview of the OpenLDV API 21
- The OpenLDV API 23
- ONWORKS interface device 24
- ONWORKS name (such as 24
- LDVDevices Structure 46
- LdvCombineFlags Enumeration 47
- LdvDeviceCaps Enumeration 48
- LDVDriverInfo Structure 50
- LdvDriverID Enumeration 51
- LdvDriverType Enumeration 52
- OpenLDV API Return Codes 53
- ONWORKS Interfaces 57
- msgSize); 62
- Constructing Messages 66
- Application Buffer Structure 66
- Layer 2 Buffer Structure 69
- Application Layer Header 69
- Layer 2 Header 69
- Layer 5 Buffer Structure 70
- Message Header 70
- ExpMsgHdr 71
- NetVarHdr 73
- ONWORKS transceivers 74
- Network Address 75
- RcvAddrDtl 78
- RespAddrDtl 80
- Message Data 81
- UnprocessedNV 82
- ExplicitMsg 82
- Downlink Commands 84
- Uplink Commands 85
- Immediate Commands 85
- Network Interface Commands 85
- Common Definitions 98
- Dispatchers 98
- Toolkits and User Interface 99
- Developer Example Diagram 100
- ONWORKS 101
- LNS Applications for xDriver 106
- Extending xDriver 107
- Downlink Sessions 108
- 102 Extending xDriver 110
- Typical Downlink Scenario 111
- Uplink Sessions 112
- ONWORKS network, in a 114
- Typical Uplink Scenario 115
- Session Control Object 116
- Authentication Key Handling 119
- ONWORKS \xDriver\Components 123
- Add a COM Object 124
- Test the Lookup Extension 132
- Optional Steps 132
- Add a COM Class 135
- LNS Programming with xDriver 145
- ONWORKS networks 147
- ONWORKS networks by 148
- Uplink Sample Application 150
- Custom Network Interfaces 155
- Overview 156
- Windows Registry Entries 158
- LNS Methods and Events for 161
- AcceptIncomingSession 162
- Remarks 162
- BeginIncomingSessionEvents 163
- EndIncomingSessionEvents 163
- NetworkInterfaces.Item( ) 164
- Syntax 164
- OnIncomingSessionEvent 165
- ReleasePendingUpdates 166
- Custom Lookup Extension 169
- Component Programming 169
- ILdvxConfigure Interface 170
- SetInstance Method 170
- Returns 171
- SetOptions Method 171
- ILdvxLookup Interface 172
- DownlinkLookup Method 172
- UpdateLookup Method 173
- UplinkLookup Method 173
- ILdvxSCO Interface 174
- GetDownlinkKey Method 177
- GetUplinkKey Method 180
- SetAuthenticationFlag Method 181
- SetDownlinkKey Method 183
- SetEncryptionType Method 183
- SetLNSNetworkName Method 184
- SetUplinkKey Method 186
- ILdvxSCO_TCP Interface 186
- GetRemoteTCPAddress Method 187
- GetRemoteTCPPort Method 187
- SetRemoteTCPAddress Method 188
- SetRemoteTCPPort Method 188
- ILdvxSCO2 Interface 189
- GetNeuronID Method 189
- 184 Index 192
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