Re: [ECOS] a question about opening a serial port fax device as a file

[Andrew Lunn <andrew@lunn.ch>]

On Wed, Jul 20, 2005 at 07:15:36PM +0700, Indra Antonius Simalango wrote:
> 
> deal all,
> 
> Below are my quote snippet. It would open a serial fax device as a TFILE.  
> Returns 0 if OK, 1 if busy, 2 on error. 
> 
> -------------------------------------------------------------------------
> ...
> 
> #define FAXFILE "/dev/ser1"
> 
> typedef struct tfilestruct {
>   int fd ;
>   unsigned char *ip, *iq ;
>   unsigned char ibuf [ IBUFSIZE ] ;
>   unsigned char *ibitorder, *obitorder ;
>   int bytes, pad, lines ;
>   int hwfc ;
>   time_t start ;
>   long mstart ;
>   int rd_state ;
> } TFILE ;
> 
> int ttyopen ( TFILE *f, char *fname, int reverse, int hwfc )
> {
>   int flags, err=0 ;
> 
>   tinit ( f, open ( fname, O_RDWR | O_NONBLOCK | O_NOCTTY ), reverse, hwfc 
> ) ;
> 
>   if ( f->fd < 0 ) {
>     if ( errno == EBUSY ) {
>       err = 1 ; 
>     } else {
>       err = msg ( "ES2can't open serial port %s:", fname ) ;
>     }
>   }
> ...
> --------------------------------------------------------------------------
> 
> I set fname = FAXFILE
> 
> I've done this by posix-eCos programming.This file has successfully  
> compiled and linked. But when it runs, it gives an error return :
> 
> 	:17:20 Error : can't open serial port /dev/ser1: No such entity
> 
> I built my eCos on PC-i386 platform. I've also changed FAXFILE to 
> /dev/ser0, /dev/ttyS0, but still encountered the same error. Did I miss 
> something here?

CYGPKG_IO_SERIAL_DEVICES 

        Andrew

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