Re: [avrdude-dev] Support for at-isp v1.1?

[Raymond Moore]

*This message was transferred with a trial version of CommuniGate(tm) Pro*
There is a simple fix for this in code.  We of ##microcontrollers on
irc.freenode.net had much the same problem and one of our people came up
with a fix.  
In the file par.c
        find the routine "int par_highpulsepin(int fd, int pin)"
        swap the lines ppi_set and ppi_clear
        recompile avrdude.

This makes avrdude now work with the futurlec.com programmer but breaks
it for other programmers.

Hope this helps,

Ray Moore aka Puff-n-Stuff aka SithAdmin

On Tue, 2006-04-11 at 19:48 +1000, Neil Davey wrote:
> *This message was transferred with a trial version of CommuniGate(tm) Pro*
> Hi Bram,
> I use the mega control board for a few projects... to get around this 
> issue I have
> 1) setup a bootloader for some projects
> 2) made a bsd style programmer that hooks into the 10pin connector
> 3) I currently use the AVRISP MK II and avr studio (on windows, till I 
> can get the win32 libusb working...)
> 
> It would be good I think to have an option to invert the pin operation...
> 
> Regards
> Neil Davey
> 
> >Hi,
> >
> >Recently I bought a atmega8 development board from futurlec/mrt. This
> >board has it's own, yet another idea how the isp connector and
> >(parallel) programming cable (labeled AT-ISP V1.1) looks like. There's
> >also a windows software supplied to program the uC.
> >
> >All signal lines between the isp connector and atmega8 (reset, sck,
> >mosi, miso) are inverted with a 74ls04.
> >Since all IC components are installed in a socket, I was able to
> >bypass the inverters, by inserting wires in the ic socket of the
> >74ls04 (creating a pin compatible 'passive non-inverting device' ;-)).
> >
> >With the following added to /etc/avrdude.conf, I was able to program
> >the atmega8:
> >
> >programmer
> >  id    = "atisp";
> >  desc  = "AT-ISP V1.1 programming cable for AVR-SDK1 from
> >micro-research.co.th";
> >  type  = par;
> >  reset = 6;
> >  sck   = 8;
> >  mosi  = 7;
> >  miso  = 10;
> >;
> >
> >My questions are:
> >- Is anyone using this board successfully with avrdude?
> >- Would it be possible let avrdude invert the programming signals, so
> >that a board like this would be directly supported?
> >The avrdude.conf file might then, for example look like:
> >
> >programmer
> >  id    = "atisp";
> >  desc  = "AT-ISP V1.1 programming cable for AVR-SDK1 from
> >micro-research.co.th";
> >  type  = par;
> >  reset = _6;
> >  sck   = _8;
> >  mosi  = _7;
> >  miso  = _10;
> >;
> >
> >Using some character (_) to invert a pin.
> >
> >Thanks,
> >
> >Bram
> >
> >
> >_______________________________________________
> >avrdude-dev mailing list
> >address@hidden
> >http://lists.nongnu.org/mailman/listinfo/avrdude-dev
> >
> >  
> >
> 
> 
> 
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