linux-kernel - Re: [RFC] USB driver for talking to the Microchip PIC18 boot loader

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Message-ID: <a276da400712292046k5d9a47c2x462c9070275d8ee@mail.gmail.com>
Date:	Sun, 30 Dec 2007 12:46:12 +0800
From:	"Xiaofan Chen" <xiaofanc@...il.com>
To:	mgross <640e9920@...il.com>
Cc:	"Alan Stern" <stern@...land.harvard.edu>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [RFC] USB driver for talking to the Microchip PIC18 boot loader

On Dec 30, 2007 12:29 PM, mgross <640e9920@...il.com> wrote:
> The device ID's are different 0x000C in ldusb.c vrs 0x000b in the
> driver I just posted.

I know that. 000b is for the demo application. 000c is for the
bootloader application.

I am not a progammer myself but I think the USB communication part
of both the two libusb based application are fine. I have no comments
about the other part of fsusb coce.
http://forum.microchip.com/tm.aspx?m=106426

> > Please do not add it to the kernel. There are libusb based application
> > for both the bootloader and the demo application and both are working
> > fine under Linux (along with Windows and I am trying to get FreeBSD
> > working).
>
> The libusb based FW loader http://www.internetking.org/fsusb/ program
> is nasty and didn't work on one of my systems, so I refactored it into
> a kernel driver and python program.
>

If it does not work, read my patches and see if it will work.

If you do not like the existing fsusb application, you can rewrite
it in python with pyusb (which is based on libusb) but you do not
need a kernel driver.

pyusb: http://pyusb.berlios.de/

Hex file parsing  in pyk by Mark Rages. He is using the Bitpim
libusb wrapper which IMHO is not as good as pyusb.
http://groups.google.com/group/pickit-devel/msg/35e850832256e890

Xiaofan
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