[avrdude-dev] [bug #37768] Poll usbtiny 100 times at init time to handle low-clock devices

[Joerg Wunsch]

Follow-up Comment #3, bug #37768 (project avrdude):

> I wonder if this affects how it responds to the reset?

It probably does, but just the other way around: upon reset, 
no application code is running, so the CPU clock is just 
the clock as configured by the fuses (whatever it might be, 
including the effect of the CKDIV8 fuse).

Maybe it's some other effect, like the device waking up 
from sleep?

I don't pretend to fully understand the existing USBtinyISP 
code though.  As I read it, it asserts /RESET rather early, 
and that should certainly get the target into its 
fuse-configured speed sooner or later.

If you can come up with a (firmware) testcase that 
reproduces the issue, that would be welcome.  I'd like to 
understand what's going on before changing the code (in 
particular since I didn't write that code myself).

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