[Usbpicprog-technical] [usbpicprog-technical] Difference between gcc (mingw) and msvc

[Frans S. <fra...@gm...>]

Hi,

I found a problem in the usbpicprog windows version which seemed to 
exist since we moved to libusb-1.0.
The problem was that 3 bytes of data were added to every data package 
while programming. I first thought this might be a problem with 
libusb-1.0-win32, but it is a difference between mingw and msvc. (I also 
moved from mingw to msvc 2008 at the same time).
The difference is the way this union was being handled:

   146typedef  union
   147{
   148     struct
   149     {
   150         unsigned  cmd:8;    /// One of the CMD_ defines above
   151         unsigned  size:8;   /// Size of the datafield
   152         unsigned  addrU:8;  /// The address is devided in 3 bytes, Upper, High and Low
   153         unsigned  addrH:8;
   154         unsigned  addrL:8;
   155         unsigned  blocktype:8;  /// The blocktype can be middle, first or last (or first|last)
   156         unsigned char  dataField[32];
   157     }  fields;
   158     unsigned char  data[38];
   159}  UppPackage;

msvc added 3 bytes between blocktype and dataField in data[], so I changed it into

   144typedef  enum
   145{
   146	up_cmd,
   147	up_size,
   148	up_addrL,
   149	up_addrH,
   150	up_addrU,
   151	up_blocktype,
   152	up_data
   153}UPP_INDEX;
   154/**
   155     UppPackage is the data header which is sent to the programmer hardware.
   156*/
   157typedef  struct
   158{
   159     /*struct
   160     {
   161         unsigned cmd:8;   /// One of the CMD_ defines above
   162         unsigned size:8;  /// Size of the datafield
   163         unsigned addrU:8; /// The address is devided in 3 bytes, Upper, High and Low
   164         unsigned addrH:8;
   165         unsigned addrL:8;
   166         unsigned blocktype:8; /// The blocktype can be middle, first or last (or first|last)
   167         unsigned char dataField[32];
   168     } fields;*/
   169     unsigned char  data[38];
   170}  UppPackage;


The pre-834 versions of usbpicprog are thus completely useless.

Also the libusb-1.0 without pthread is out now, so I updated the x86 dll in svn.

Francesco, could you build version 834 adm64 with the new libusb-1.0?

Frans