Re: [avrdude-dev] Bad programming speed on AT90S8535 using AVRdude

[Jan-Hinnerk Reichert]

On Monday 17 November 2003 01:46, idefixx wrote:
> Hi guys!
> Was pretty busy during last few weeks. Now I continue my studies on
> programming speed.
>
> I did some oscilloscope measurments on the SCK signal (using pony
> programmer dongle) and found out the following:

Call avrdude with "-v -v", then you have output of all SPI activity.

It seems like polling is not implemented very well. If I understood 
the code in "avr.c":
- Polling is not done if the data is either "readback_p1" or 
"readback_p2" (can anyone explain to me why readback_p2=0x00 ?)
- Even if polling is used there is a sleep of min_write_delay

/Jan-Hinnerk