[Linux-parport] EPP writing address

[Alessio PICCIOLI]

In EPP mode with ppdev module how can i dinstinguish using write command 
between writing data and writing address ? 

  fd = fopen ( "/dev/parport0" , 0_RDWR ) ;
  ioctl ( fd, PPCLAIM ) ;
  int mode ;
  mode = IEEE1284_MODE_EPP ;
  ioctl ( fd , &mode ) ;

  /* WRITING DATA */ 

  write ( fd , const void *ptr , 1 ) ; 

  /* WRITING ADDRESS */ 

  ?????? 


EPP protocol says that when i am writing data line nDSTR must be low, when i 
am writng addresses line nASTR must be low. 


 Alessio