Re: [Uisp-dev] Bug in uisp?

[Joakim Arfvidsson]

I will try to find another adapter...

I can send an entire program of any size before it fails. Also, 
sometimes I can actually do a second transfer before failing... about 1 
time in 10.

If the timeout is more than a #define in the source I won't have any 
chance trying to change it:)

Thanks,
Joakim Arfvidsson



On 2004-03-01, at 21.51, Jason Kyle wrote:

> At 08:51 29/02/2004 +0100, Joakim Arfvidsson wrote:
> > I'm using uisp (version 20030618) with Mac OS X 10.3.2 and an Aten 
> > USB-serial converter. I do not know the chipset of that converter. I 
> > have a home-made AVR910 programmer connected to the serial port.
> >
> > The problem I'm having is that I need to pull and reconnect the 
> > USB-serial converter to the mac between almost every transfer! 
> > Sometimes it works for several transfers. Even a small chat with the 
> > programmer getting the list of programmable chips counts in this 
> > respect.
> >
> > The error message is "Programmer not responding". I can always do echo
>
> All USB-Serial adapters won't send received serial data back to the 
> host for some period of ms (minimum is 1ms, some are as high as 16ms), 
> or when the FIFO buffer is full.  What this means for AVR910 
> programmers is the response characters are often delayed and uisp may 
> have some fixed timimg parameters which only work properly with real 
> UARTs.  Probably something that could be tweeked.
>
> Try a different USB-Serial adapter and/or check carefully that the 
> "send not-full FIFO delay" is as short as possible.  Failing that 
> switch to an STK500 compatiable programmer.
>
> Jason Kyle
>
>
>
>
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