Re: [avrdude-dev] Autoreset for Arduino Micro (Butterfly)
As Anton Smirnov wrote: (I cannot comment on the Arduino stuff.) PS. BTW I've seen some emails on AVR109 not working and related topics so was it working in release 5.11 (i don't want to update as i have some changes) or i have to update? There is one thing that was broken (all the time), it's handling all the flash addresses. They are supposed to be provided as 16-bit word addresses, but have been specified as byte addresses. However, up to 5.11.1 (including), this bug did not manifest itself. AVRDUDE always started at address 0 anyway there, and the auto-increment feature correctly incremented the current address inside the bootloader anyway. Only starting with recent changes in SVN, AVRDUDE now calls the write_page() method once per page (instead of once per memory region before), and only for those pages that have actual data loaded from an input file. That's why the bug started to became obvious now. If you are serious about adding features to the code base, please get the SVN trunk, and start over from there. Many things have changed compared to 5.11.1, so otherwise, you might end up doing the work twice. The second thing is bug report #37997: https://savannah.nongnu.org/bugs/?37997 As you can see from my latest comments, I suspect the originator of this bug report confused avr109 (aka. butterfly mode, i. e. the bootloader implementation) with avr910 (the standalone programmer). Both protocols are very close so the mistake doesn't become obvious immediately, and in addition, until AVRDUDE 5.3, it probably worked even when using the wrong programmer type. -- cheers, Joerg .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-) ___ avrdude-dev mailing list avrdude-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/avrdude-dev
Re: [avrdude-dev] Autoreset for Arduino Micro (Butterfly)
Thanks for the great explanation! 10.09.2013 20:06 пользователь Joerg Wunsch j...@uriah.heep.sax.de написал: As Anton Smirnov wrote: (I cannot comment on the Arduino stuff.) PS. BTW I've seen some emails on AVR109 not working and related topics so was it working in release 5.11 (i don't want to update as i have some changes) or i have to update? There is one thing that was broken (all the time), it's handling all the flash addresses. They are supposed to be provided as 16-bit word addresses, but have been specified as byte addresses. However, up to 5.11.1 (including), this bug did not manifest itself. AVRDUDE always started at address 0 anyway there, and the auto-increment feature correctly incremented the current address inside the bootloader anyway. Only starting with recent changes in SVN, AVRDUDE now calls the write_page() method once per page (instead of once per memory region before), and only for those pages that have actual data loaded from an input file. That's why the bug started to became obvious now. If you are serious about adding features to the code base, please get the SVN trunk, and start over from there. Many things have changed compared to 5.11.1, so otherwise, you might end up doing the work twice. The second thing is bug report #37997: https://savannah.nongnu.org/bugs/?37997 As you can see from my latest comments, I suspect the originator of this bug report confused avr109 (aka. butterfly mode, i. e. the bootloader implementation) with avr910 (the standalone programmer). Both protocols are very close so the mistake doesn't become obvious immediately, and in addition, until AVRDUDE 5.3, it probably worked even when using the wrong programmer type. -- cheers, Joerg .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-) ___ avrdude-dev mailing list avrdude-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/avrdude-dev ___ avrdude-dev mailing list avrdude-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/avrdude-dev
