Re: [Flashforth-devel] UNO lockup

[Mikael N. <mik...@fl...>]

That sounds like the USB-to-serial converter on the UNO does not handle
the USB protocol correctly.
Since that converter is a separate chip on the board,
I cannot understand how FF could be the problem.

Pressing the reset button only resets the Atmega328 and FF, not the
USB-serial converter. That is also an indication that the USB-serial 
converter
has a problem.

On 2022-02-23 02:50, Ed wrote:

> I find UNO with FF often locks up after PC has gone to sleep or powered 
> down but still connected.  Usually the result is no comms and reset 
> doesn't work.  Seems to happen only after I've compiled a few simple 
> definitions.
> 
> Any ideas?
> 
> p.s.  It just came to me that I was powering the board via the USB.  
> Would that be an issue?