Objective Development Forums 2010-01-07T12:27:42+02:00 https://forums.obdev.at/app.php/feed/topic/3709 2010-01-07T12:27:42+02:00 2010-01-07T12:27:42+02:00 https://forums.obdev.at/viewtopic.php?t=3709&p=12759#p12759 <![CDATA[Re: eeprom_write break my connection...]]> Statistics: Posted by christian — Thu Jan 07, 2010 12:27 pm

]]> 2010-01-06T08:53:29+02:00 2010-01-06T08:53:29+02:00 https://forums.obdev.at/viewtopic.php?t=3709&p=12738#p12738 <![CDATA[Re: eeprom_write break my connection...]]>
I wound up having a similar issue. In my case, I was doing an EEPROM read before USB even started up, and it was causing super-big connection issues. The strange part was that it all took place before (well, before in the code) the USB communication started...

In my case, I wound up just removing that EEPROM call (not very useful advice, probably...). Still, one thing I noticed was that the AVR was actually doing a semi-reset, and that was messing things up. This condition is mostly resultant from EMI, or at least, was the case in my circuit. So you might want to add in a few more decoupling capacitors here and there, and whatever other EMI-reduction methods you can. I guess it depends if you're working on a proto board, since there's not a huge amount of things you can do to cut EMI in that environment...

Hope it helps!

Statistics: Posted by Alan Chatham — Wed Jan 06, 2010 8:53 am

]]> 2010-01-01T22:36:58+02:00 2010-01-01T22:36:58+02:00 https://forums.obdev.at/viewtopic.php?t=3709&p=12673#p12673 <![CDATA[Re: eeprom_write break my connection...]]> ), but I have no problem reading and writing the eeprom.

Try modifying and building a hid-data example code, it does reads and writes off the eeprom.

Statistics: Posted by qdot — Fri Jan 01, 2010 10:36 pm

]]> 2009-12-30T15:31:59+02:00 2009-12-30T15:31:59+02:00 https://forums.obdev.at/viewtopic.php?t=3709&p=12651#p12651 <![CDATA[eeprom_write break my connection...]]>
i use tiny85 and 12Mhz crystal... i need to read and write internal eeprom via usb... read is OK... but then i start to write ... it break my connection... i can write about 1-5 byte's before device disconnected... i try to write only one byte.... then wait about 1 sec before next write... but it is not make success... i think eeprom_write is take much time... hm... very strange... maybe anyone already solve this problem ?

p.s: sorry for bad english :)

Statistics: Posted by Guest — Wed Dec 30, 2009 3:31 pm

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