[avrdude-dev] [patch #6825] xmega problems with JTAGICEmkII

[Joerg Wunsch]

Follow-up Comment #1, patch #6825 (project avrdude):

I finally got the time to test the patch.  Sorry for taking
forever.

Alas, with the patch, JTAG programming completely fails for me.
This is just a first test, so I didn't try to isolate the
hunk(s) of the patch that makes it fail.  The symptom is that
it starts out fine, but reads only garbage:

avrdude: Yikes!  Invalid device signature.
avrdude: Expected signature for ATXMEGA128A1REVD is 1E 97 41
avrdude> d fuse4
>>> d fuse4 
0000  00                                                |.               |

avrdude> d fuse2
>>> d fuse2 
0000  00                                                |.               |

avrdude> d flash
>>> d flash 
0000  00 00 00 00 01 00 00 00  00 00 00 40 00 00 10 00  |address@hidden|
0010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

avrdude> d ee
>>> d ee 
0000  00 00 00 00 01 00 00 00  00 00 00 40 00 00 10 00  |address@hidden|
0010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

In contrast, without the patch, at least the minimal
functionality is OK:

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9741
avrdude> d flash
>>> d flash 
0000  0e 94 40 00 0e 94 2b 00  0e 94 4d 00 05 e0 00 93  |address@hidden|
0010  05 02 00 93 45 02 00 91  16 02 10 91 56 02 01 23  |....E.......V..#|
0020  01 30 c9 f7 00 91 08 02  00 93 64 06 0e 94 4d 00  |.0........d...M.|
0030  00 91 09 02 00 93 64 06  0e 94 4d 00 00 91 48 02  |.. ...d...M...H.|

avrdude> d ee
>>> d ee 
0000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0010  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0020  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0030  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude> d fuse4
>>> d fuse4 
0000  1e                                                |.               |

avrdude> d fuse5
>>> d fuse5 
0000  f7                                                |.               |

avrdude> d lock
>>> d lock 
0000  ff                                                |.               |



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