Re: [avrdude-dev] ATMega8535 on avr910

[Eric Williams]

   At 11:41 AM 8/5/2003 -0700, Theodore A. Roth wrote:

     On Tue, 5 Aug 2003, Brian Dean wrote:
     > On Mon, Aug 04, 2003 at 11:21:04PM -0700, Eric Williams wrote:
     >
     > > Has anyone had any luck programming the ATMega8535 with avrdude
     on a avr910
     > > programmer?  (DigiKey has discontinued the AT90S8535.)  I tried
     modifying
     > > the avrdude.conf file to give the m8535 the avr910_devcode of
     the Mega83,
     > > and the program cycle ran, but the verify fails on the first
     byte.  I'm not
     > > afraid of hacking my avr910 if that's what it takes, but I
     don't have the
     > > tools to build a binary of avrdude.  I'm running v4.1.0 under
     Win2K.
     >
     > Not sure if you did this or not, but be sure and erase the chip
     before
     > programming the flash.  You can use the '-e' option to do this at
     the
     > time you program the flash.  Without doing this, you'll typically
     get
     > verify errors if the chip previously contained a program.
     I don't think that the avr910 firmware is mega85xx aware. You're
     probably going to have to hack that. You can get a version of the
     firmware here:
       [1]http://savannah.nongnu.org/cgi-bin/viewcvs/avrdude/avr910/
     Ted Roth

   I found a version of the avr910 firmware with added mega devices here:
   [2]http://www.avrfreaks.net/phorum/download.php?f=3&file=AVR910_2313_v
   3.asm
   The downside for some is that it requires a 2313 to run.
   Avrprog still doesn't list the meg8535 when I use it with this
   firmware, but it does list the mega8515, and the 8535 seems to program
   OK on that setting. I'm back in business.
   Avrdude doesn't want to work with the updated firmware, serial_recv()
   says the programmer is not responding.  Not sure what's up with that.
   --
   eric

References

   1. http://savannah.nongnu.org/cgi-bin/viewcvs/avrdude/avr910/
   2. http://www.avrfreaks.net/phorum/download.php?f=3&file=AVR910_2313_v3.asm