Delay until answer?

Hi!
I'm making a program to run a LCD Display with a HD61830 controller.
I've got some C Sourcecode which helps some, but it uses something I don't quite understand:

Code:

/***************************************************
* wait till HD61830 is not busy
*************************************************/
void lcgwait(void)
{
	char busy;

	_outp(PORTB,LCGCMD|LCGRD|LCGDIS);
	do{
		_outp(PORTB,LCGCMD|LCGRD|LCGEN);
		delay(EDELY);
		busy=_inp(PORTA)&0x80;
		_outp(PORTB,LCGCMD|LCGRD|LCGDIS);
		delay(EDELY);
	}while(busy);
}

Notice the "delay(EDELY);" ? what is EDELY? I could possibly replace it with sleep(), but it hasn't got any time! Is it "wait for answer" or something?
I appreciate any help on this

Cheers!

And I forgot to mention, the compiler gives me a "error C2065: 'delay' : undeclared identifier"

delay isnt standard or a part of the Windows API (well as far as I know...)

I think it may be implemented under conio.h on an old compiler....

As for EDELY...that may be a user defined constant or provided with that implementation of delay().....either way its difficult to know without knowing the compiler used with this code

I don't know what compiler is used with the original code, I downloaded it from http://panda.bg.univ.gda.pl/~janusz/software.html#lcg .

Originally posted by Plasma
I don't know what compiler is used with the original code, I downloaded it from http://panda.bg.univ.gda.pl/~janusz/software.html#lcg .

Looking at the site, he seems to have his own compiler for download - http://panda.bg.univ.gda.pl/~janusz/...e.html#mediumc - So I imagine it might use that

Oh

Oh!
I didn't read through the whole site. Gotta find a way to incorporate his code into MS Visual C++, then.

I'm going to make a nice GUI for it too, so I don't fancy starting to learn a new flavour of c++

Thanks for the help anyways. If anyone has a way to incorporate this into a C++ project I would appreciate your feedback ASAP


Regards Thomas

Originally posted by Plasma
Oh!
I didn't read through the whole site. Gotta find a way to incorporate his code into MS Visual C++, then.

I'm going to make a nice GUI for it too, so I don't fancy starting to learn a new flavour of c++

Thanks for the help anyways. If anyone has a way to incorporate this into a C++ project I would appreciate your feedback ASAP


Regards Thomas

Well....the _outp and _inp functions are still available in VC++'s version of conio.h......

As for those constants (IE - LCGCMD), either the code you have, or the headers in that guy's compiler will show you what they mean...