AVR IPS programming problems

I'm using a similar network, 10k up, 100nF to GND and 100 Ohm to the ISP.

Hmm, the lot runs on 5V or perhaps lower ? I once found that there is some bit timing, which is dependent on the voltage. While at 5v is was 3ms per bit, it increased to 9ms at 3.3V or so. The programmer, in my case the Equinox from Meridian has the short value fixed. Fortunately, it was editable somewhere in the options. Took me a day. We also had problems with the Mega 163, they got better once we moved to the 323 and now at the Mega32 there weren't any yet.

As of the Mega162 I know nothing.

Rene

Everything runs at 5V.

I'm using the STK500 utility from Atmel. No timings to set. I cannot find anything about it on Atmel's website either. I'll try an upgrade of AVRStudio in the next couple of days.

Meindert

Try PonyProg from

Wouldn't it be logical that the tools from Atmel would work? :-)

Meindert

Hi Meindert,

Just a thought - Is your STK500 using the latest latest firmware as included with the latest build of AVR Studio?

out

programmed.

I'm not quite sure. I haven't downloaded the latest version yet, so that might be the problem. The STK500 utility itself is V1.40. I'll check that anyway. Thanks for the hint.

Meindert

Not necessarily. Similar to Microchip, software is not thir business. It took Microchip about 10 years after the release of

Just in case : There is a Pascal compiler for the AVR that comes with programmer.

Rene

^^^^^

That is the best unintentional description I have come across for ages :-^

Hi Meindert,

the problem could be the SPI timing. The mega162 runs at 1MHz when the fuses are not programmed.

There is a command in the STK500 protocol to slow down the SPI. However, I don't know about the STK500 utility, because I use Linux.

/Jan-Hinnerk

If that is the problem then Just lower the STK500 clock on the first programming , until fuses are set correctly.

Carsten

And the $64.000 question is: How?

Meindert

reset

the

programmed.

are

Ok guys, thanks for all the suggestions. I completely failed to notice the -! option to set the clock frequency. I have set it to 1MHz and all devices program fine now.

Regards, Meindert