Hmm, what hardware are you using? On Wed, Aug 25, 2010 at 9:45 AM, Josef Wolf <[email protected]> wrote: > On Wed, Aug 25, 2010 at 09:13:08AM +0200, David A. Mellis wrote: >> The schematics may have a resistor, but the boards shipped with a >> capacitor or nothing at all. We've never used a resistor to connect >> RTS/DTR and RESET. > > What about the people who have built their own HW based on those schematics? > >> The problems that people have been having are because the Arduino IDE >> currently uses the "stk500v1" protocol in avrdude, which doesn't >> handle reset of RTS and DTR, not the "arduino" protocol that does. >> These problems should go away in Arduino 0019, in which the IDE will >> toggle both lines before doing uploading. > > I have 0019 and I tried "arduino" protocol from avrdude/trunk _with_ > a capacitor. > > But there seem to be problems with the timing, too. I get pretty reliable > results with a delay of 3..3000 us. Starting from 3000us up to 80000us, it > gets unreliable in such a way that it works only once after I plug in the > USB port. Above 80000us, it starts getting reliable again. > > Unfortunately, I don't have a scope to check what exactly is going on here. > > Please see my other post on this thread. > >> This is the same problem, >> I'm guessing, that Axel is having, which should go away with recent >> versions of avrdude that assert the lines on opening the port and >> deassert them on closing. > > As I wrote above, I _have_ recent avrdude (checked out yesterday). This is > what my patch is based on. > >> All of which is to say that this patch might not hurt, but I don't >> think it's necessary for any of the situations I've encountered. > > So looks like I have a very special situation here... But nevertheless, > I'd like to know what might so special about my situation. > > _______________________________________________ > avrdude-dev mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/avrdude-dev >
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