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Multiplexer Driver Developer’s Guide

7.4 Data Transfer

s

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
	WrGetWriteBuffer
	GetBuffer?	no
	GetBuffer?
	yes
	asked all Port two	yes
	times and no Frames
	sent?
	no	no
		no
	GetFrameBufferPort	Get
	GetFrameBufferPort	WriteBuffer?
		WriteBuffer?
	no	yes
	Frame ?
	yes
	WrSubmitWriteBuffer	WrReturnWriteBuffer

ret

Figure 9: Send function from the virtual communication ports

Mux_Drv_DevGuide_v07	Page 33 of 36	2006-9-27
Confidential / Released

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Contents

User’s Guide Copyright General Notes Contents Multiplexer Driver Developer’s Guide List of Tables Tables List of Figures Figures Chapter What is new Document HistoryDocument History Multiplexer Driver Developer’s Guide Introduction Introduction Supported Product Versions Supported Product Versions Abbreviations Related DocumentsRelated Documents Abbreviation Description Architecture Hierarchy Chart in the SystemUser Architecture Handling of the Physical Serial Port Signal DescriptionModule Detection Handling of the Physical Serial Port Handling of Control Lines on Virtual Ports Limitation of Virtual PortsHandling of Control Lines on Virtual Ports Command Response Function Associated Registry Value Module Initializing SequenceModule Initializing Sequence Power Down on PC Suspend Power DownPower Down after Closing the Last Port Module Re-initialization Power Down Power Down on PC Shutdown Files Required for WinMux2k Driver Installation InstallationInstalling the WinMux2k Driver Installation Deinstalling the Driver Deinstalling the DriverWindows Windows XP new desktop, not the classic desktop Device Settings and Properties Settings on the Serial Multiplexer PropertiesDevice Settings and Properties Settings Stored in the Windows Registry Settings Stored in the Windows RegistryValue Data Example Properties TC45, XC18 only Multiplexer Driver Developer’s Guide Values Data Example Properties Dial-up Network Settings Settings for ApplicationsFax Settings Settings for Applications Software Requirements Translate Source CodePreparing the Translation Compiler Flags Additional Source Documentation Interaction of the Different Driver ObjectsAdditional Source Documentation Internal Driver States Internal Driver States Buffer Handling Buffer Handling To th e S e rM u x O b je c t a re in d ic a te d Data Transfer Multiplexer Driver Developer’s Guide SerMuxSend and SerMuxSendPort0 Functions SerMuxSend Function Start +++-Parser +++-Parser Booting Operating System Known ProblemsShutdown of the Operating System Standby of the Operating System Operation on Virtual USB Port Special EnvironmentsAutomatic Shutdown in case of Emergency Special Environments