Design And Implementation Of The Serial Log Analytical Tool Based On Filter Driver Technology

There are various kinds of problems that can not locate the trouble when testerstested a variety of mobile phones and Data cards. Most of the mobile phones and datacards use AT command to control. Common Log analytical tools would occupy the portwhen monitoring the AT command, and this brings testers the inconvenience during thework.So it is important to design a software which based on filter driver technology anddo not take up the port and affect the case of interactive instruction when interceptingthe AT command.This paper introduced the development and status of monitoring tool at home andabroad, combined with the development needs of today’s mobile terminal testingindustry, designed and implemented a Log analytical tool. This paper analyzed theWindows features and the architecture of operating system, and introduced the WDMdriver model. This paper made the overall system design of Log analytical tool byresearching filter driver, and implemented the part of the display application by usingMFC. Driver module firstly completed driver entry routine and uninstall routine, andthen added the operation of IRP_MJ_CREATE and IRP_MJ_CLOSE, access routinesand dispatch routines. This paper repeated debug and modified the driver part, makingthe driver part in the stability, the correctness of the functional achieve satisfactoryresults. This paper actually tested with a large number of different models of notebookand different types of data cards.This paper has the conclusion that the Log analyticaltool compared to the previously used port monitoring tools has the advantage such asmore humane opertion and higher stability.Although the tool implemented in this paper can play a supporting role in thetesting or debugging of phone and data cards, but there are still insufficient, thetranslation function of the AT command should needed, then the common ATcommands will correspond with the translation. the function of corresponding with eachcompany can also be increased. The AT command set has been automatically loaded,and there are the operation command which is easy to understand in the user interface.