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Debugging ATMEGA328

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I´m about to start using the Arduino UNO for a M2M project. My first concern is about debugging.

 

Does anyone know if its possible to program and DEBUG the ATMEGA328 using some Atmel debugger (AVR Dragon, AVR JTAGICE mkII or AVR ONE!), the AVR Studio 5.1 and the ISP interface on the Arduino UNO board?

 

Thanks!

Gabriel Cysne

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    H Gabriel,

     

    I'm glad that you asked this question.  I enjoy the ease of working with the Arduino platform, but at times I really do miss the ability to do step-by-step debugging like I've done with other microcontrollers I've used.

     

    I had looked awhile ago but didn't find much info on how to use a debugger with an Arduino.  However, looking again just now, I did find this interesting approach:

     

    http://husks.wordpress.com/2010/02/21/modify-an-arduino-for-debugwire/

     

    The Arduino has a handy auto-reset feature but this causes problem for debugWIRE which runs over the reset line.  He removes the capacitor and then is able to debug with an AVR Dragon.  He does also have a follow-up for the Duemilanove (2009) Arduino:

     

    http://husks.wordpress.com/2010/05/27/the-arduino-duemilanove-with-atmega328-and-that-reset-line/

     

    The UNO was release after these posts, so I think a inspection of the schematic would be needed.  But I think that this should probably work.

     

    I do have UNOs, Duemilanove's and an AVR Dragon so I think I might try this in a week or two... or sooner if I run into a problem that a rat's nest of print statements won't solve.

     

    Please let me know how you proceed and thanks for raising this subject!

     

    Cheers,

    Drew

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  • 0

    H Gabriel,

     

    I'm glad that you asked this question.  I enjoy the ease of working with the Arduino platform, but at times I really do miss the ability to do step-by-step debugging like I've done with other microcontrollers I've used.

     

    I had looked awhile ago but didn't find much info on how to use a debugger with an Arduino.  However, looking again just now, I did find this interesting approach:

     

    http://husks.wordpress.com/2010/02/21/modify-an-arduino-for-debugwire/

     

    The Arduino has a handy auto-reset feature but this causes problem for debugWIRE which runs over the reset line.  He removes the capacitor and then is able to debug with an AVR Dragon.  He does also have a follow-up for the Duemilanove (2009) Arduino:

     

    http://husks.wordpress.com/2010/05/27/the-arduino-duemilanove-with-atmega328-and-that-reset-line/

     

    The UNO was release after these posts, so I think a inspection of the schematic would be needed.  But I think that this should probably work.

     

    I do have UNOs, Duemilanove's and an AVR Dragon so I think I might try this in a week or two... or sooner if I run into a problem that a rat's nest of print statements won't solve.

     

    Please let me know how you proceed and thanks for raising this subject!

     

    Cheers,

    Drew

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  • 0 in reply to fustini

    Hello Drew!

     

    Thanks for answering. I totally agree with you... print statments at the serial can´t be considered debug.

     

    Before I post this question, I did a little search myself and came to same articles you found. But just as you said, the UNO was release after, and my concern is just about the UNO board. image

     

    I will order my UNO board and hopefully debug on it some day. image

    Please let me know if you have any news!

     

    Thanks again!

    Gabriel