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PeterTs's avatar
PeterTs
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5 years ago

Bare-metal application on SDRAM failing to run on DE10-nano

I'm struggling (huge understatement) to get my bare-metal application running and would appreciate some help. My set up is: I'm using a DE10-nano development board and have 4 copies of the prelo...
AnilErinch_A_Intel's avatar
AnilErinch_A_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hi ,

Please check the below forum thread for a related discussion.

https://forum.rocketboards.org/t/how-to-use-interrupt-in-the-bare-metal-mode-on-cyclone-v/1059/6

Also there are two types of interrupts , cpu interrupts and global interrupts.

The reason for program counter jumping to All zero address can be many ways which is heavily dependent on the implementation.

If you can share your assembly and other files we can have detailed look.

But would suggest to contact a local sales person for dedicated support which involves code debug.

Thanks and Regards

Anil


  • PeterTs's avatar
    PeterTs
    Icon for New Contributor rankNew Contributor
    5 years ago

    Hi Anil,

    Thank you for your response.

    I found the cause of the PC jumping to zero - it was due to the HPS Watchdog0 expiring. This in turn was a result of I2C bus transactions taking longer than the watchdog interval I'd set (because I wasn't handling an I2C NAK from my slave device correctly).

    When debugging via JTAG I've found I need to disable the watchdog to prevent watchdog resets.