[avrdude-dev] [bug #36901] flashing Atmega32U4 EEPROM produces garbage on chip

[Joerg Wunsch]

Follow-up Comment #5, bug #36901 (project avrdude):

Hi Folks,

I finally managed to get a working configuration. The EEPROM gets
the correct data. I tested it with an Arduino Leonardo and an
AVR ISP MK2 with ISP programming.

+v+
--- avrdude.conf        2013-01-30 16:23:59.493158196 +0100
+++ avrdude.conf-old    2012-07-20 13:53:00.000000000 +0200
@@ -10430,7 +10430,7 @@

     memory "eeprom"
         paged           = no; /* leave this "no" */
-        page_size       = 4;  /* for parallel programming */
+        page_size       = 8;  /* for parallel programming */
         size            = 1024;
         min_write_delay = 9000;
         max_write_delay = 9000;
@@ -10457,8 +10457,8 @@   
                          "  x   x   x   x      x   x   x   x";

        mode            = 0x41;
-       delay           = 20;
-       blocksize       = 4;
+       delay           = 10;
+       blocksize       = 8;
        readsize        = 256;
       ;
-v-

The numbers are taken from the XML partdescription files as found in
AVR Studio 6


Matthias
PS: Since I do not have a savannah account I could not update
the bug entry. It can be closed. Thank you.


    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?36901>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/