Re: [Usbpicprog-technical] win7 testing

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

Hi Francesco,

I don't have any 64 bit windows system, in fact the only windows that I
have is a 32 bit winXP (which I don't often use). Even though I have
never tested it on a 64 bit system, the libusb driver wizard (a tool
delivered with libusb-win32 to generate a device driver to let the
device communicate with libusb) does create a 64 bit driver. I think it
should work with a 32-bit binary on winXP-64 but I have never tested it.
For the time being let's investigate the possibilities.

Frans

On Sat, 2009-11-28 at 21:47 +0100, Francesco wrote:
> Hi Frans,
>     did you have a chance to test usbpicprog on Win7 64bit or WinVista 64bit?
> 
> I've recently upgraded to Win7 64bit and I cannot use UPP anymore...
> in fact UPP doesn't detect the programmer anymore. This is a fault in
> libusb-win32 which as the name implies has been coinceived for win32
> only and not win64 :/
> Tracing with MSVC++ debugger the execution of the program I found that
> usb_get_busses() simply returns an empty object, i.e. libusb doesn't
> seem to detect any USB device at all.
> 
> An important thing I should add is that I've firstly installed latest
> 0.3.0 upp EXE installer _after_ enabling test-signing drivers (with
> the command "bcdedit /set testsigning on"). This allowed me to
> successfully install the libusb driver but apparently it doesn't work.
> 
> I looked on the web and this is a summary of what I found:
> 
> 1) libusb-win32 is maintained "only" by Sthepan Meyer; many people ask
> for win64 support but so far libusb-win32 is for win32 only (and many
> report that just installing libusb-win32 wreaks havoc your 64bit
> system!! I was lucky ;)).
> Stephan has been working on a libusb1 backend which uses the new
> (introduced with WinVista) WinUSB API which allows to create user-mode
> USB apps: http://libusb-win32.svn.sourceforge.net/viewvc/libusb-win32/trunk/libusb1/
>   (btw this Stephan's new library seems to follow the same libusb-0.1
> API of the main libusb-win32 project).
> 
> 2) http://sourceforge.net/projects/openusb/    is a fork of libusb but
> seems to be Mac and Linux only. I couldn't find much info about this
> project (no mailing list or forums).
> 
> 3) http://www.libusb.org promotes the use of the new stable 1.0 API
> which has many advantages compared to the libusb-0.1 (maintained,
> better docs, better design, MT safe, etc). Unfortunately there's still
> no Windows backend for libusb-1.0. Josh Perry did some efforts
> apparently successful to implement the backend using WinUSB (see
> http://www.libusb.org/ticket/1) but he didn't post any patch AFAIK.
> 
> I think Win64 support is strategical and I'm planning to use USB for
> other PIC-based projects I'm working on... so I'd be curious to know
> if you have further info about this issue.
> 
> Thanks,
> Francesco
> 
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