Re: Better news (Re: [Gpsbabel-misc] OS X <> Meridian)

[Robert L. <rob...@us...>]

Carsten Kurz wrote:
> 
> 
> > It's blocking the open.  Gpsbabel doesn't get a chance to set it up
> > becuase the port has to be open to configure it.
> 
> But why only with the Meridian connected, not with the Garmin?

Because the garmin code uses open(2) and the Magellan uses fopen() and
something - either his C library or his device driver - is hanging in
the open.  The fopen wrapping is further hosing up the arguments to open
itself, adding O_WRITE and two exclusive bits.

On his system, the first fopen never completes.

#define P "/dev/tty.USA28X11P2.2"

#include <stdio.h>
#include <errno.h>
#include <fcntl.h>

main()
{
        FILE *a,*b;
        printf("First open\n");
        a = fopen("/dev/tty.USA28X11P2.2", "r");
        printf("a %p\n", a);
        printf("Second open\n");
        b = fopen("/dev/tty.USA28X11P2.2", "w+");
        printf("b %p\n", a);
}


I've pretty well thrown up my hands on that.   He'll have to find a Mac
Dude to chase it from here...

RJL