C / C++ / MFC

Re: Hardware abstraction layer

14-Apr-06 3:09

Hi.

I need to develop code that will be ported to several platforms (windows, embedded, ...) and I need to work with the serial port (which is of course platform specific). So I need to design an hardware abstraction layer. I was wondering what is the best way to go for that.

For now, what I have in mind is declare my class in a header file. The handle of the port and things that are related to the target platform are enclosed into preprocessor tags (#ifdef) so that they are not 'viewed' by the compiler if not required.
Then for the implementation of the class, I will have a cpp file for each platform. Each cpp file will be enabled (or disabled) by the preprocessor tags.

Like that, I don't have to bother of my target platform, I have a generic class that can be created without checking for the target platform.

Is this a good way to achieve that ? Or is there other methods ?
Thanks for your advices.

Prakash Nadar14-Apr-06 3:20

Prakash Nadar

14-Apr-06 3:20

yes.

-Prakash

working with threads

keerthikaaa14-Apr-06 2:28

keerthikaaa

14-Apr-06 2:28

hai to all

i would like to know about how to work on threads .ie.,how to create a thread
how to start a thread
how to stop a thread
Smile | :)

Cedric Moonen14-Apr-06 2:33

14-Apr-06 2:33

This is a too vast subject to answer simply in a message. You can find more informations on Google[^]

Aqueel14-Apr-06 2:43

Aqueel

14-Apr-06 2:43

Try to search CWinThread on MSDN or Google. This class is used to create and handle threads in VC++.
Good luck

We Believe in Excellence
www.aqueelmirza.cjb.net

Russell^'14-Apr-06 2:53

Russell^'

14-Apr-06 2:53

Here I found many usefull information about threads.
And it is simply readable, also for beginners.

http://www.codeproject.com/threads/usingworkerthreads.asp[^]

Hope it helps.

Have a nice code day Wink | ;)

Hamid_RT14-Apr-06 5:00

Hamid_RT

14-Apr-06 5:00

Hi keerthikaaa,
maybe it is some helpful to you

http://flounder.com/workerthreads.htm[^]

Le Thanh Cong16-Apr-06 22:02

Le Thanh Cong

16-Apr-06 22:02

You come into MSDN, read topic related to CWinThread

-----------------
conglt

dispinterface keyword

Identity Undisclosed14-Apr-06 2:23

Identity Undisclosed

14-Apr-06 2:23

I am using a new interface using "dispinterface keyword". Can I inherit this interface from an already existing inteface. If yes, what is the syntax ?

If no, what is way around and what is wrong in my understanding ???

"C makes it easy to shoot yourself in the foot. C++ makes it
harder, but when you do, it blows away your whole leg."
- Bjarne Stroustrup

COMMAND LINE ARGUMENT

jai_sendme14-Apr-06 2:09

jai_sendme

14-Apr-06 2:09

I M GETTING A FATAL ERROR WHEN GOING TO COMPILE MY VC++ FILE THAT TAKES SOME COMMAND LINE INPUT.
PLEASE HELP ME BETTER IF ANYONE CAN GIVE ME A COMPLETE CODE

JAI

parichaybp14-Apr-06 2:15

parichaybp

14-Apr-06 2:15

Hi,

Try to restart your system and also vc++ ..

what program are u trying to do??

Cedric Moonen14-Apr-06 2:20

14-Apr-06 2:20

parichaybp wrote:
Try to restart your system and also vc++ ..

Uuh??

toxcct14-Apr-06 2:21

14-Apr-06 2:21

read "Try to format your HDD"

this solution always resets compilation problems... Roll eyes | :rolleyes:

ps: did you receive my mail ? Cool | :cool:

jai_sendme14-Apr-06 4:51

jai_sendme

14-Apr-06 4:51

That will be the ultimate option. Big Grin | :-D

David Crow14-Apr-06 2:18

David Crow

14-Apr-06 2:18

jai_sendme wrote:
I M GETTING A FATAL ERROR WHEN GOING TO COMPILE MY VC++ FILE THAT TAKES SOME COMMAND LINE INPUT.

What does your program's command-line acceptance have to do with a compilation error?

jai_sendme wrote:
PLEASE HELP ME BETTER IF ANYONE CAN GIVE ME A COMPLETE CODE

Complete code to what?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Cedric Moonen14-Apr-06 2:19

14-Apr-06 2:19

Please, don't SHOUT

And then provide more information. What is this fatal error. Please give as much RELEVANT details as possible. We are not gods, how can we know which error it is.
Is it a compile error, a linker error, a runtime error ? Then post the exact message.
If it's a runtime error, use your debugger first to find where it crashes.

toxcct14-Apr-06 2:21

14-Apr-06 2:21

you beat me to it Poke tongue | ;-P

Cedric Moonen14-Apr-06 3:55

14-Apr-06 3:55

I think we'll never know what he was talking about.

ot...

toxcct14-Apr-06 4:03

14-Apr-06 4:03

ced',

off topic but, did you receive my mail ?

(sorry if i am a bit insistant about that, but i'm desperate about it[^], and i'm sure you could be of any useful help D'Oh! | :doh:

)

Re: ot...

Cedric Moonen14-Apr-06 4:18

14-Apr-06 4:18

Err, no, I didn't get your mail.
But I answered to your question. I'm not sure at all if this is the correct answer though...

Re: ot...

toxcct14-Apr-06 4:31

14-Apr-06 4:31

thank you.
i answered consequently.
i'd be glad to share this with you...
(actually, you'd save me my nerves ! lol)

jai_sendme14-Apr-06 4:47

jai_sendme

14-Apr-06 4:47

Yes Dear ,
It is a linker error.

Cedric Moonen14-Apr-06 4:56

14-Apr-06 4:56

Then you got a linker problem...

Sorry but if you don't give more information, it's the only answer I can give. What is the exact error message ? And give as much relevant info as possible.

toxcct14-Apr-06 2:20