gnupic: Re: [gnupic] PICDEM FS USB demo application
Subject:
RE: [gnupic] PICDEM FS USB demo application
From:
Chen Xiao Fan ####@####.####
Date:
12 Aug 2005 03:11:53 +0100
Message-Id: <3B8AEFFADD3DD4118F8100508BACEC2C07F77441@spex>
Thanks for the fast reply. My intention is really to port
it to Windows but so far not successful. I've posted the
question to libusb-win32 mailing list since I have same
problems when porting usb_pickit.
My quick modification is quite minimum:
1) add the makefile for Linux and Windows. I do not know
how to combine both Make files since I know not so much
about host programming. :(
2) add the usage prompt (copied from fsusb) to make it slightly
user-friendly. :) That is because I did not download the
readme file last time.
3) split the endpoint address. Linux libusb does not
care about direction bits but Windows libusb-win32 cares.
4) add "#ifndef Win32" to comment out geteuid call on Windows.
5)libusb-win32 does not use global variables like usb_busses so
instead of using:
/* for (bus=usb_busses;bus!=NULL;bus=bus->next) */
We need to use:
for (bus=usb_get_busses();bus!=NULL;bus=bus->next)
6) I was trying to debug the windows version so I copied
fsusb version of "fsusb_read_version". It should be the
same as "picdem_fs_usb_read_version". Anyway I think the
problem is with difference of ubs_bulk_read and
usb_bulk_write under Linux and Windows.
All the modification should not affect the Linux version and
I've tested it on Ubuntu Linux 5.04.
I will try again with the Windows port if I get some
answers from libusb-win32 mailing list. At the same time
I am learning the usb stuff by going through the firmware
codes and the datasheets. I think PICDEM FS USB is quite
a good learning tool for me.
Regards,
Xiaofan
-----Original Message-----
From: Manuel Bessler ####@####.####
Sent: Friday, August 12, 2005 9:08 AM
Hi Xiaofan,
On Fri, Aug 12, 2005 at 08:12:23AM +0800, Chen Xiao Fan wrote:
> I found out a file in my hard disk named fsusb_demo_linux.c
> written by Manuel Bessler but I forgot where I got it.
Right here: :)
http://www.varxec.net/picdem_fs_usb/
yep. it was based on the code for the pickit1 linux stuff.
> For those interested, please go to Microchip Forum USB
> section.
> http://forum.microchip.com/tm.asp?m=107340
I'll check it out later and integrate your changes into my code.
Manuel
