nope.txt

linux下驱动程序设计的文章

NOPE(1)                   James McKenzie                  NOPE(1)


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

SSYYNNOOPPSSIISS
       nnooppee [_O_P_T_I_O_N] [_O_P_T_I_O_N]...

DDEESSCCRRIIPPTTIIOONN
       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 nnooppee 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.

OOPPTTIIOONNSS
       --uu _f_i_l_e [_t_y_p_e]
              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)

       --cc _f_i_l_e [_t_y_p_e]
              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)

       --dd _n_u_m Download  the file with index number _n_u_m,, tthhee ffiillee--
              nnaammee iiss eexxttrraacctteedd ffrroomm tthhee yyeepppp.. TThhiiss ccaann bbee  qquuiittee
              ssllooww  bbeeccaauussee  EECCPP  mmooddee iiss nnoott ssuuppppoorrtteedd ffoorr ddoowwnn--
              llooaaddiinngg..

       --ee _n_u_m Erase the file with index _n_u_m..

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



April 2001                 Version 1.2                          1





NOPE(1)                   James McKenzie                  NOPE(1)


              effectively removes all user files from the Yepp.

       --rr     Return  control  of  the  Yepp  to  user user. This
              returns the yepp from "CONNECT" mode to the  normal
              mode and re-enabled auto power off. It is useful in
              scripts.  --pp _b_a_s_e SSeett tthhee iioo aaddddrreessss ooff tthhee  ppaarraall--
              lleell ppoorrtt ttoo uussee.. NNooppee rreeqquuiirreess aatt lleeaasstt aa bbii--ddiirreecc--
              ttiioonnaall ppaarraalllleell ppoorrtt ttoo ffuunnccttiioonn,, tthhee yyeepppp  ddooeessnn''tt
              sseeeemm  ttoo  ssuuppppoorrtt  aa  nniibbbbllee mmooddee..  NNooppee pprroobbeess ffoorr
              ppoorrttss aatt 00xx33bbcc,, 00xx337788,, aanndd 00xx227788.. IIff yyoouu ssuuppppllyy  aann
              aaddddrreessss nnooppee jjuusstt ttrriieess tthhaatt oonnee aaddddrreessss..

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

BBUUGGSS
       the --cc and --uu options should check for available space.

       nope should handle CTRL-C elegantly

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

WWAARRNNIINNGG
       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.

FFUUTTHHEERR WWOORRKK
       nope needs some extra tools to convert sc4  and  telephone
       files to other formats.

CCOOPPYYRRIIGGHHTT
       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.

SSEEEE AALLSSOO
       http://gimel.esc.cam.ac.uk/james/nope











April 2001                 Version 1.2                          2