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Altera_Forum's avatar
Altera_Forum
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12 years ago

nios on fpga not responding proper

Hi,

I have built nios on fpga.Nios design includes clock source,nios,jtag,on-hip memory,PIO-connected to led.Then I did counter c program on eclipse.GETs 00-ff output on console window but led not blinking on board. I used led pin properly.

I used in built eclipse binary count program.What is problem?

please reply

ThankYOU

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    how are you writing to the PIO?

    it should be something like this:

    while(1)

    {

    IOWR_ALTERA_AVALON_PIO_DATA(PIO_0_BASE, count&0xFF); //write a value to show Nios is alive

    count++;

    delayOneSecond();

    }

    you can check that you are writing to the correct address by running in debug mode and manually edit the memory location and see if the LEDs change.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Hi,

    Actually I just used the inbuilt Binary count program template from eclipse. can u please check that?

    In that 4 switches are assigned to different peripherals. SW0 is set to blink led. while pressing sw0 I should get the led display .Right????

    else please help me in righting the simple program.