[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[avr-gcc-list] Troubles uploading to a Mega103

From: Uwe Bonnes
Subject: [avr-gcc-list] Troubles uploading to a Mega103
Date: Tue, 27 Mar 2001 23:53:18 +0200

Ludovic COURTES writes:
 > As you can see, the 'Enable Programming' command (0xAC530000) works
 > fine, but then, the signature bytes are wrong. Moreover, the
 > strange thing is that it first time (after power-up) it returns
 > 0xFFFFFF as its signature bytes and then, if we don't switch it
 > off, it always returns 0x000102...  BTW, note that uisp continues
 > even if device is locked and then crashes... ;)
 > Well, if someone has already had this kind of problem, i would be glad
 > to know more about it !
Two ideas:

- your have some gate in some of the ISP lines, causing an inversion
- some more parts are conneted to the ISP lines and are not inactive
  during reset causing some contentions


Uwe Bonnes  address@hidden

reply via email to

[Prev in Thread] Current Thread [Next in Thread]