Re: [AVR-Chat] Re: AVRISP -> AtTiny Communication Problem
2010-01-22 by Kenny M.
Well this is my first time doing this so I don't know if the chips or the programmer are actually good. But I bought a batch of dozen of the 15L's after trying 4 I would think some of them must work anyway, if not all. Sorry I don't have an oscilloscope. I appreciate the offer, that would certainly help. But it's a long drive from atlanta and new york lol :) > -----Original Message----- > From: AVR-Chat@yahoogroups.com [mailto: AVR-Chat@yahoogroups.com ] On > Behalf Of Kenny M. > Sent: Thursday, 21 January 2010 4:49 PM > To: AVR-Chat@yahoogroups.com > Subject: Re: [AVR-Chat] Re: AVRISP -> AtTiny Communication Problem > > Feel free to jump in I need all the help I can get lol > <snip> > 3b. Not sure what your target micro is but note that some (eg. > atmega128) do not use MISO/MISO pin for programming > AtTiny15L > > 4. What exactly is the error message from AVR studio? I always first > try to 'Read Signature' (from the 'Main tab') > Yeah I've been using read signature too, I get: > Setting mode and device parameters.. OK! > Entering programming mode.. FAILED! > Leaving programming mode.. OK! > Not too helpful lol > Hmm, this is funny. Can you tell us more detail about your target hardware. Is it 'known good'? How you have the ATTiny15L connected? (Do you have a schematic?) You mentioned LEDs on the AVRSIP. What colour are they? Frankly I do not take much notice of them (when it just works) but there is a detailed description of the status leds for the AVRISP in the AVR Studio 'AVR Tools' Help file. Do you have an oscilloscope? If so check you might check then signals coming from the programmer. I am stumped. You need to first determine whether it's the AVRISP or the target hardware (FWIW my gut feel is that it's not the ISP). Do you have other target hardware you can try with? What part if the world are you located in? I am in Sydney AU, you are welcome to drop into my office and we can spend a few minutes with my AVRISP to check your hardware. Ivan