SerialPort &TOMCAT

[vrinda ullas <vr...@gmail.com>]

---------- Forwarded message ----------
From: vrinda ullas <vr...@gmail.com>
Date: Thu, 25 May 2006 08:52:58 +0530
Subject: commapi using TOMCAT
To: kartik.vad@gmail.com, hall@coreservlets.com, brown@coreservlets.com

I want to communicate with a microcontroller connected to the serial
port of my computer.
*I am using the following:
Windows 98 operating system
Tomcat web server 4.1

*The directory structure is as given:
Tomcat 4.1/webapps/myjsp/web-inf/classes/remoteservlets.
I have placed my jsp files in my jsp folder and classfiles in remote
servlets folder.

**my java program has compiled correctly.**
** my simple java application which accesses the serial port works fine.***
*when I start tomcat I am able to access the sevlet as the servlet
responds with the button name i have pressed.

**** I have also tried the following
Copied file comm.jar in <JAVA_HOME>\jre\lib\ext
Copied file javax.comm.properties in <JAVA_HOME>\jre\lib
Copied file win32com.dll in <JAVA_HOME>\lib and also in
c:\windows\system32 and c:\windows\system
***************which helped me do away with errors.
still I don't get any output. I dont get any errors either.
PLEASE HELP. URGENT. i am at my wits end.
Thank you.

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Re: SerialPort &TOMCAT

["Rajeev N. Jha" <jh...@gmail.com>]

I am also using java comm API version 2 and i can display all the port 
names and types through a servlet. so no magic here. Maybe you should 
use a simple program like this to test your environment first ?

Plus one more point , i have copied comm api files (dll , properties 
file and comm jar file ) under my JDK/JRE as well as my system JRE. 

Hope this helps.

Rajeev.


vrinda ullas wrote:
> hi rajjev,
> i am using communication api version 2.
> i am trying to control a relay through serial port.I first built ajava
> application to do the same. It works fine.But on trying to convet the
> same into a web based application i don,t get any results.
>
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>
>


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Re: SerialPort &TOMCAT

[Wade Chandler <hw...@yahoo.com>]

--- vrinda ullas <vr...@gmail.com> wrote:

> hi rajjev,
> i am using communication api version 2.
> i am trying to control a relay through serial port.I
> first built ajava
> application to do the same. It works fine.But on
> trying to convet the
> same into a web based application i don,t get any
> results.
> 
Have either of you two debugged you applications and
stepped over the lines accessing the serial port? 
Does it throw an Exception of any kind, hang, or just
fall on through?  Another question might be are the
comm APIs open source like the rest of the java APIs? 
If so then you could take the source of those packages
and debug through those as well.  This should help you
track down where the error is faster.

Wade

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Re: SerialPort &TOMCAT

[vrinda ullas <vr...@gmail.com>]

hi rajjev,
i am using communication api version 2.
i am trying to control a relay through serial port.I first built ajava
application to do the same. It works fine.But on trying to convet the
same into a web based application i don,t get any results.

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Re: SerialPort &TOMCAT

["Rajeev N. Jha" <jh...@gmail.com>]

what version of java COMM  are you using ? 
Plus it would help to know why you are accessing a serial port through 
tomcat server ?


vrinda ullas wrote:
> ---------- Forwarded message ----------
> From: vrinda ullas <vr...@gmail.com>
> Date: Thu, 25 May 2006 08:52:58 +0530
> Subject: commapi using TOMCAT
> To: kartik.vad@gmail.com, hall@coreservlets.com, brown@coreservlets.com
>
> I want to communicate with a microcontroller connected to the serial
> port of my computer.
> *I am using the following:
> Windows 98 operating system
> Tomcat web server 4.1
>
> *The directory structure is as given:
> Tomcat 4.1/webapps/myjsp/web-inf/classes/remoteservlets.
> I have placed my jsp files in my jsp folder and classfiles in remote
> servlets folder.
>
> **my java program has compiled correctly.**
> ** my simple java application which accesses the serial port works 
> fine.***
> *when I start tomcat I am able to access the sevlet as the servlet
> responds with the button name i have pressed.
>
> **** I have also tried the following
> Copied file comm.jar in <JAVA_HOME>\jre\lib\ext
> Copied file javax.comm.properties in <JAVA_HOME>\jre\lib
> Copied file win32com.dll in <JAVA_HOME>\lib and also in
> c:\windows\system32 and c:\windows\system
> ***************which helped me do away with errors.
> still I don't get any output. I dont get any errors either.
> PLEASE HELP. URGENT. i am at my wits end.
> Thank you.
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>


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