Serenum

SUMMARY

Serenum enumerates Plug-n-Play RS-232 devices that are compliant with the current revision of Plug and Play External COM Device.

It loads as an upper filter driver to many different RS-232 device drivers that are compliant with its requirements and performs this service for them.

BUILDING THE SAMPLE

To build the sample, run the build command. Once built, the sample produces one binary: Serenum.sys. The sample is 64-bit compliant, works on both x86 and Alpha platforms, and supports both Plug and Play and Power Management. There is no one Inf for serenum because it is loaded as a filter driver in different driver stacks. An example of this can be found in %WINDIR%\inf\msports.inf.

CODE TOUR

File Manifest

File           Description
 
Enum.c          Functions that enumerate external serial devices—the main purpose of this driver
Makefile        Makefile for building this driver
Pnp.c           Plug and Play support code
Power.c         Power support code
Serenum.c       Basic driver functionality
Serenum.h       Local header with defines, prototypes, etc
Serenum.rc      Resource script
Sources         Data file for build.exe
String.c        String handling support; mainly ASCII to UNICODE functionality
 
 

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