[prev in list] [next in list] [prev in thread] [next in thread] 

List:       ms-smartcardddk
Subject:    R: VCOMM
From:       Alfio Scuderi <AScuderi () XENIAPROGETTI ! IT>
Date:       2000-03-14 10:39:52
[Download RAW message or body]


Hi Andy,

I'm working on the same problem but I haven't found anything yet.
Please, let me know if you solve it. I'll do the same.

Thanks
Alfio


-----Messaggio originale-----
Da: Andy Lin [mailto:b5506018@CSIE.NTU.EDU.TW]
Inviato: domenica 20 febbraio 2000 13.38
A: SmartCardDDK@DISCUSS.MICROSOFT.COM
Oggetto: VCOMM


hi everyone:
    I am trying writing a Serial PC/SC driver..and use the SCARD99 V3.10 to
test the driver.In the disabler test,the test enable and disable the driver
repeatedly,but sometimes I failed the test due to the failure of calling
VCOMM_OpenComm when the test try to re-enable the driver.
I am sure that I had call VCOMM_CloseComm last time the test disable the
driver.And the problem is "sometimes" happen.

I had try to Close the comport again before calling VCOMM_OpenComm,the
situagion chages to that VCOMM_OpenComm,VCOMM_GetSetCommTimeouts,
VCOMM_SetCommState success,but when I try to SETDTR,it fail again.I called
VCOMM_GetLastError,it returned 0 meaning that I had passed the invalid
handle.But I hve no idea how this happen.

ps.The first time of initializing driver will always ok.

Is there anything I should do to before VCOMM_CloseComm to make the next
VCOMM_OpenComm success?
Do any one have such problem before?Can any one help me with this?
Another question:Can I use the WDM serial driver in win98.If yes,how do I
build mydriver?because there is no such header file in 98DDK..
Thanx in advance
                                           Andy Lin
                                           Castles Automation



[prev in list] [next in list] [prev in thread] [next in thread]