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Altera_Forum's avatar
Altera_Forum
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15 years ago

on-chip hex in SOF - problem to run

Hi guys,

I have a problem with this, hopefully somebody has similar experience.

I have a quite simple nios program, just changing some values of pio to flash LEDs if the memory test (altera code) is successfull and printf messages.

I run everthing without any problems if I use Run as -> Nios II HArdware in the Nios II EDS.

But i need to have this software to start automatically after SOF is loaded (need to have soft in the onchip memory). So I generated onchip_mem.hex and recompiled the project in Quartus.

After i had downloaded the sof to the chip I didn't see something was happening in the chip.

So I've opened the nios2-terminal. And as soon as I opened the nios2-terminal the program launched - LED started to flash and the rest.

I have no idea what is going on. I seems that the software is in onchip mem but why it doesn't start until i start nios terminal.

I have reset of sopc builder connected to vcc. Nios reset and exception vectors are in onchip mem - can't have them in ddr2 since i'm testing it.

Could somebody point me where should i look?

Thanks,

U.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    I assume you are using jtag-uart for stdin, stdout and stderr?

    Try to select another uart in the BSP editor, it might be the jtag-uart is waiting for connection.
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    mcr42,

    Yes, i'm able to run from on-chip mem after i removed jtag-uart from the stdin, stdout and stderr in the BSP editor settings. Thank you very much for help!

    But it looks strange to me. I did several designs in Quartus II 9.0 with soft running from onchip mem and I had jtag uart in STD without any problems.

    I can't see any difference except now i use quartus ii 91 sp2 and new nios ii environment, and i don't use a timer in my project.

    Is there any issues with jtag waiting for connection in the new versions of Quartus?

    Thanks,

    U.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I think u can add a epcs controller to your SOPC system, reset set to epcs controller, exception set to onchip-ram. then use flash programmer to program sof and elf to epcs...

    try it...