Echelon OpenLDV - Manual (Page 6)

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LdvCombineFlags Enumeration ........................................................... 39
LdvDeviceCaps Enumeration ............................................................... 40
Structures and Enumerations for the Driver API ..................................... 42
LDVDriverInfo Structure ...................................................................... 42
LdvDriverID Enumeration ................................................................... 43
LdvDriverType Enumeration ............................................................... 44
Windows Messages for Session Notifications ............................................. 44
OpenLDV API Return Codes ....................................................................... 45
Example: A Simple OpenLDV Application ................................................ 52
Chapter 3. Sending/Receiving Messages with the OpenLDV API ....... 57
Constructing Messages ................................................................................ 58
Application Buffer Structure ....................................................................... 58
Layer 2 Buffer Structure ....................................................................... 61
Application Layer Header .............................................................. 61
Layer 2 Header ................................................................................ 61
NPDU ............................................................................................... 61
CRC .................................................................................................. 62
Layer 5 Buffer Structure ....................................................................... 62
Application Layer Header .............................................................. 62
Message Header .............................................................................. 62
Network Address ............................................................................. 67
Message Data .................................................................................. 73
Sending Messages to the Network Interface ....................................... 75
Receiving Messages from the Network Interface ................................ 75
Using the Network Interface Command Interface .................................... 76
Downlink Commands ............................................................................ 76
Uplink Commands ................................................................................. 77
Immediate Commands .......................................................................... 77
Network Interface Commands .............................................................. 77
Chapter 4. The OpenLDV Developer Example ........................................ 89
Overview ....................................................................................................... 90
Common Definitions .................................................................................... 90
COpenLDVapi and COpenLDVtrace .......................................................... 90
COpenLDVni, Message Pumps, and Message Dispatchers ...................... 90
Toolkits and User Interface ......................................................................... 91
Developer Example Diagram ...................................................................... 92
Chapter 5. Using the xDriver Default Profile .......................................... 93
Configuring an xDriver Profile.................................................................... 94
LNS Applications for xDriver ...................................................................... 98
Chapter 6. Extending xDriver ...................................................................... 99
Extending xDriver ...................................................................................... 100
xDriver Sessions ......................................................................................... 100
Downlink Sessions ............................................................................... 100
Uplink Sessions ................................................................................... 104
Session Control Object ........................................................................ 108
Authentication Key Handling ................................................................... 111
Setting the Current Authentication Key ........................................... 111
Changing the Current Authentication Key ....................................... 112
Creating a Custom Lookup Extension in C++ ......................................... 113
Create a New Visual Studio Project ................................................... 114
Add a COM Object ............................................................................... 116