With the help of the developer of libusb-win32 Stephan Meyer, I have
my first success in the porting efforts. I have ported 
Rick Luddy's USB Linux bootloader for the PIC FS USB demo board to
Windows.

Since I do not have a web site, I will list the changes here.

1) solve the problem of getline with Mingw by downloading 
getline.c and getline.h from the internet and adds the
header file to rjlhex.c. Add getline.o to the make file as well.

2) the other changes are all applied to fsusb.c
a) remove call to geteuid. Windows does not have this.
b) for (bus=usb_busses;bus!=NULL;bus=bus->next) {
-->    for (bus=usb_get_busses();bus!=NULL;bus=bus->next) {
c) The main problem is the endpoint address. Linux libusb is
not so strict as libusb-win32.

c1) change "const static int fsusb_endpoint=1" to 
"const static int fsusb_endpoint_in=0x81" and 
const static int fsusb_endpoint_out=1". 

c2) change 
r=usb_bulk_read(d, fsusb_endpoint, dest, len, fsusb_timeout); 
to: 
r=usb_bulk_read(d, fsusb_endpoint_out, dest, len, fsusb_timeout); 

c3) change 
r=usb_bulk_write(d, fsusb_endpoint, "\0\0\0\0\0", 5, fsusb_timeout); 
to: 
r=usb_bulk_write(d, fsusb_endpoint_in, "\0\0\0\0\0", 5, fsusb_timeout); 

c4) change the rest of the usb_bulk_write() functions to use 
fsusb_endpoint_in.

After these changes, the fsusb application works just like the Linux 
version. It seems that the Linux version of libusb is not so 
strict on the endpoint address. Despite the error message when
flashing the HID demo hex file, the firmware seems to work
properly. I have the same error message under Linux. So this is
not the problem in the porting.

If possible I would like to post the changed codes and the compiled
application to a web site. The ported application is command
line based and require the installation of the filter driver
of libusb-win32 and the original Microchip drivers.

My next step is the usb_pickit application. 

Regards, 
Xiaofan 

--------------
Sample session using MSYS:

Test@PCAMD64 /e/Coding/fsusb0111 
$ fsusb picdemfsusb.hex 1>picfsusbmsg.txt 2>&1 

Test@PCAMD64 /e/Coding/fsusb0111 
$ less picfsusbmsg.txt 
Locating USB Microchip(tm) PICDEM-FS USB(tm) (vendor 0x04d8/product 0x000b) 
found 3 busses 
Found USB PICDEM-FS USB as device '\\.\libusb0-0003--0x04d8-0x000b' on USB 
bus bus-1 
Communication established.  Onboard firmware version is 1.0 
Writing program memory successful 
Program memory validated 

Test@PCAMD64 /e/Coding/fsusb0111 
$ fsusb hid.hex 1>hid.txt 2>&1 

Test@PCAMD64 /e/Coding/fsusb0111 
$ less hid.txt 
Locating USB Microchip(tm) PICDEM-FS USB(tm) (vendor 0x04d8/product 0x000b)
found 3 busses
Found USB PICDEM-FS USB as device '\\.\libusb0-0003--0x04d8-0x000b' on USB
bus bus-1
Communication established.  Onboard firmware version is 1.0
Writing program memory successful
mismatch in 32-byte chunk at 0x00000000:
File:  95ef0af01200####################################################
Device:e3ef03f01200ffff04ef04f01200ffffffffffffffffffff0cef04f01200ffff
Program memory contains errors!


----- Original Message ----- 
From: "Chen Xiao Fan" <xiaofan@sg.pepperl-fuchs.com>
Newsgroups: gmane.comp.hardware.microcontrollers.pic
Sent: Monday, July 25, 2005 11:13 AM
Subject: [PIC] Porting libusb application to Windows using libusb-win32


> Over the weekend I was trying to port two Linux applications
> to Windows using libusb-win32 and MingW.
> 
> One application is Mark Rages' PICkit 1 application used
> to be at http://mlug.missouri.edu/~markrages/software/usb_pickit/.
> It seems to me that the web site is down now.
> 
> The other is Rick Luddy's USB bootloader for the PIC FS USB
> demo board at http://internetking.org/fsusb/. 
> 
> Both are based on Orion Sky Lawlor's original work for PICkit 1
> at the following URL:
> http://lawlor.cs.uaf.edu/~olawlor/projects/2003/microchip/index.html.
> 
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