Siemens 7 - Figure 9: Send Function from the Virtual Communication Ports

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Multiplexer Driver Developer’s Guide

7.4 Data Transfer

Mux_Drv_DevGuide_v07 Page 33 of 36 2006-9-27

Confidential / Released

Figure 9: Send function from the virtual communication ports

Send function from the virtual Communication Ports

(the SerPort Object)

Function SerMuxSend() only sends UIH-Frames (unnumbered

information) which come in from WriteRequest to the virtual serial

communication port.

Start

GetFrameBufferPort

Frame ?

WrSubmitWriteBuffer

asked all Port two

times and no Frames

sent?

ret

WrGetWriteBuffer

Get

WriteBuffer?

WrReturnWriteBuffer

yes

GetBuffer?

yes

Main Page

Document Name2
Confidential / Released2
Table of Contents3
Document History7
Mux_Drv_Devguide_V078
Introduction9
Supported Product Versions10
Related Documents11
Abbreviations11
Architecture12
Hierarchy Chart in the System12
Figure 1: Driver Architecture12
Handling of the Physical Serial Port13
Module Detection13
Table 1: Physical Serial Port13
Handling of Control Lines on Virtual Ports14
Limitation of Virtual Ports14
Table 2: Virtual Serial Port with Multiplexer Protocol Version 214
Table 3: Virtual Serial Port with Multiplexer Protocol Version 314
Module Initializing Sequence15
Table 4: Module Initialization of Supported Modules15
Module Re-Initialization16
Power down16
Power down on PC Suspend16
Power down after Closing the Last Port16
Power down on PC Shutdown17
Installation18
Files Required for Winmux2K Driver Installation18
Installing the Winmux2K Driver18
Table 5: Required Driver Files18
Deinstalling the Driver19
Device Settings and Properties20
Settings on the Serial Multiplexer Properties Page20
Figure 2: Serial Multiplexer Properties Page20
Settings Stored in the Windows Registry21
Table 6: Registry Values21
Table 7: Registry Values for Trace Outputs24
Settings for Applications25
Dial-Up Network Settings25
Fax Settings25
Translate Source Code26
Software Requirements26
Preparing the Translation26
Compiler Flags26
Additional Source Documentation27
Interaction of the Different Driver Objects27
Figure 3: Interaction of the Different Driver Objects27
Internal Driver States28
Figure 4: State Diagram of the Internal Driver States28
Buffer Handling29
Figure 5: Driver Internal Buffer Handling29
Data Transfer30
Block Flow Diagram for Data Received by the Module30
Figure 6: Block Flow Diagram for Data Received by the Module30
Block Flow Diagram for Data Sent to the Module Via Virtual Port31
Figure 7: Block Flow Diagram for Data Sent to the Module Via a Virtual Port31
Sermuxsend Function32
Figure 8: Sermuxsend Function32
Figure 9: Send Function from the Virtual Communication Ports33
The +++-Parser34
Figure 10: State Diagram of the +++-Parser34
Known Problems35
Booting Operating System35
Mux_Drv_Devguide_V0735
Shutdown of the Operating System35
Standby of the Operating System35
Wake on Ring35
Automatic Shutdown in Case of Emergency36
Operation on Virtual USB Port36
Special Environments36

Siemens 7 - Figure 9: Send Function from the Virtual Communication Ports

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