nope.1

linux下驱动程序设计的文章

NOPE(1)                   James McKenzie                  NOPE(1)


NAME
       nope  -  Linux  drivers  for the Samsung yepp portable mp3
       player

SYNOPSIS
       nope [OPTION] [OPTION]...

DESCRIPTION
       nope provides open source drivers for  the  Samsung  yepp,
       the  driver  can do everything the supplied software can -
       except format either the internal or the card memory.  The
       program  does some bad parallel port Voodoo with ECP capa-
       ble ports, so you should probably disable  ECP  until  you
       have  tested  it  on  a sync'd system. Having said that it
       hasn't crashed anything yet.

       Files in the yepp are referenced by an index number. Index
       numbers  less than 5 are reserved for special files. Files
       have a type (set by the user) and attributes which are set
       by the player. Nope makes no attempt to lock the port from
       access by Linux but does try to disable  interrupts  which
       may help if you have parport_pc loaded.

       with  no  arguments nope establishes contact with the yepp
       and lists the contents of the player. Nope first  attempts
       to  connect  to player first using a quick algorithm which
       works if the player is already in "CONNECT" mode,  failing
       that  it  resets the connection and takes a few seconds to
       get connected. It is usual to get one or more failed  mes-
       sages.  If  you have trouble accessing the yepp, check you
       have the right parallel port and that your yepp isn't run-
       ning out of juice.

OPTIONS
       -u file [type]
              Upload file to base memory in the yepp. If the type
              is omitted it is assumed to be mp3. (The base  mem-
              ory  needs to have been formatted using other soft-
              ware)

       -c file [type]
              Upload file to the memory card in the yepp. If  the
              type  is omitted it is assumed to be mp3. (The mem-
              ory card needs to have been formatted  using  other
              software)

       -d num Download  the file with index number num, the file-
              name is extracted from the yepp. This can be  quite
              slow  because  ECP  mode is not supported for down-
              loading.

       -e num Erase the file with index num.

       -a     Erase all files with index  greater  than  4.  This



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NOPE(1)                   James McKenzie                  NOPE(1)


              effectively removes all user files from the Yepp.

       -r     Return  control  of  the Yepp to user. This returns
              the yepp from "CONNECT" mode to the normal mode and
              re-enables auto power off. It is useful in scripts.

       -p base
              Set the io address of the  parallel  port  to  use.
              Nope  requires  at  least a bi-directional parallel
              port to function, the yepp doesn't seem to  support
              a  nibble  mode.   Nope  probes for ports at 0x3bc,
              0x378, and 0x278. If you  supply  an  address  nope
              just tries that one address.

Troubleshooting
       Try  again,  try  fresh  batteries, check you are using
       the right parallel port, email me.

AUTHOR
       Written by James McKenzie <[e-mail]> and his
       cat.

BUGS
       the -c and -u options should check for available space.

       nope should handle CTRL-C elegantly

       Bad voodoo should be added for downloading as well as
       uploading.

       Sometimes if you don't specify an order  you  get  an
       unexpected one.

WARNING
       Nope uses very bad Voodoo to achieve  download  speeds  of
       about  150kbps  on  ECP  capable parallel ports. There are
       super io chipsets which have trouble initializing  in  ECP
       mode  and  use of these may set fire to your goldfish etc.
       I haven't been able to make it crash any systems yet - but
       be  warned. If you have trouble set the parallel port mode
       to EPP or bi-directional rather than ECP.

FUTHER WORK
       nope needs some extra tools to convert sc4  and  telephone
       files to other formats.

COPYRIGHT
       Copyright (C) 2001 James McKenzie.
       This  is  free software; see the source for copying condi-
       tions.  There is NO warranty; not even for MERCHANTABILITY
       or FITNESS FOR A PARTICULAR PURPOSE.

CREDITS
       Thanks to Chris Lightfoot who suggested the name.



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NOPE(1)                   James McKenzie                  NOPE(1)


SEE ALSO
       http://gimel.esc.cam.ac.uk/james/nope























































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