Re: [avrdude-dev] [bug #30559] Ft232 bit-bang support

[Rogier Wolff]

Hi David, 

The reason I am working on this is to get the "builtin" ftdi ICSP
working so that you can reflash the arduino. 

As Rene explains, the "serjtag" part is somehow part of the "history"
of the codebase, but not an essential part.

As we don't know anybody with the "serjtag" hardware it cannot be
tested at the moment, and it will move into a separate patch.

You are very much invited to test the ft234r programmer on your
arduino hardware.

Please download the patch, apply it to the svn sources, and install. 

Now check /..../etc/avrdude.conf for the ft245r programmer
sections. There is bwmega, for which I have the hardware (and
hopefully soon Rene too). 

Check if the pinout corresponds with what is documented on that
"serjtag" page you found. If not, please copy such a section, call it
arduino_icsp or something, and test. If/when it works, please send
that part of avrdude.conf to me so that I can include it in the patch.

It would be nice if you could make notes on what you need to do to
make the arduino IDE use this new programmer instead of the
bootloader. If you get that to work, you'll have a free 2k extra flash
memory you could use. :-) (or 4k on the '328?) 

        Roger. 


On Mon, Jan 16, 2012 at 04:58:00PM -0800, David Harris wrote:
> Hi--
> 
> I think sertag is referring to this Arduino project:
> http://www.geocities.jp/arduino_diecimila/bootloader/index_en.html
> 
> Explanation: Arduinos usually use a serial bootloader to load 'Sketches'
> into the hardware.  However, in the unfortunate event that the bootloader
> is damaged, the user is forced to use ICSP (in circuit serial programming)
> or high-voltage programming.  This involves additional hardware.
> 
> Fortunately, many Arduino boards use the FT232RL for usb-serail, and with a
> little jumpering, this can be used to program the raw mpu. Some boards, eg
> the LEDuino (www.siliconrailway.com), have hardware that connects the
> appropriate FT232RL lines to the ICSP.
> 
> I have the resources to test the patch, and would be glad to do so.
> 
> David Harris
> 
> On Mon, Jan 16, 2012 at 12:44 PM, Rene Liebscher <address@hidden>wrote:
> 
> > Follow-up Comment #8, bug #30559 (project avrdude):
> >
> > I think we should left out serjtag, until anybody comes up with references
> > what this programmer is and is willing to test it.
> >
> >    _______________________________________________________
> >
> > Reply to this item at:
> >
> >  <http://savannah.nongnu.org/bugs/?30559>
> >
> > _______________________________________________
> >  Nachricht geschickt von/durch Savannah
> >  http://savannah.nongnu.org/
> >
> >

-- 
** address@hidden ** http://www.BitWizard.nl/ ** +31-15-2600998 **
**    Delftechpark 26 2628 XH  Delft, The Netherlands. KVK: 27239233    **
*-- BitWizard writes Linux device drivers for any device you may have! --*
The plan was simple, like my brother-in-law Phil. But unlike
Phil, this plan just might work.