I appreciate you looking at my code. I am pretty sure I am reading the
respective ports, unless I am really missing something. The first time it I
read the control port is in simreadonly.cpp line 41:
->->->-> else if( NOERRORS == pp.GetPort( atoi(argv) ) )
This function is defined in ModLapLinkInterface2.cpp line 28. GetPort reads
the control port on line 100:
This macro is defined in the ModLapLinkInterface2.h file starting at line
115 and ending at line 124:
->->->-> #define READ_CTRL_REG() if( ioctl( m_nPort, PPRCONTROL,
&m_ucByte ) ) \
However, I am repeatedly reading the control port in simreadonly.cpp line 51
in the main loop:
->->->-> pp.GetC( &ucCTRL );
The function GetC(...) is defined starting at line 167 in
ModLapLinkInterface2.cpp where it also utilizes the aforementioned macro. I
am using the macros so I can use the same code in DOS as well as Linux. So
I wouldn't have to change the function definitions since they can call which
ever version is defined. Its is not there yet because I would have to
define the DOS equivelents and include respective headers based on which one
I wanted to use.
So am I missing something major here? Or is it any clearer than mud now?
How shall I make use of your suggestion to "access the register to change
the direction of the bits"?
----- Original Message -----
From: "Blaise Gassend" <email@example.com>
To: "Nate Jenkins" <firstname.lastname@example.org>
Cc: "Parport" <email@example.com>; "Gregg C Levine"
Sent: Wednesday, May 14, 2003 5:59 AM
Subject: Re: [PARPORT] custom cabling
> Hi Nate,
> I had a look at your code, and it seems to me that you aren't accessing
> the econtrol register at all. I believe that you have to do so to change
> the direction of those bits. I've never done this via the ppdev
> interface, so I can't give you any specifics, but I'm pretty sure this
> is your problem.
> > I have the status port of PC #2 accepting bit changes from data port of
> > PC #1. However, no matter what I do, I cannot change the values of the
> > control port of PC #2 from outside of PC #2.
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