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Altera_Forum's avatar
Altera_Forum
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16 years ago

Nios II do not work anymore !

Hi,

I made a simple project in Quartus II with a Nios II processor... (with a few I/O)

In the Nios II IDE, I made a simple hello_world_small too...

It was working yesterday (i.e. the I/O worked as I expected with a simple IRQ and the terminal showed me the appropriate message)...

But today, without changing anything, the Nios II processor don't work anymore !

I program the FPGA with the same Quartus II project and I load the same Nios II IDE project !

My IRQ and I/O don't work ! Any message on the console !

Even the reset button has no effect !

Here the only message from the console : 

nios2-terminal: connected to hardware target using JTAG UART on cable
nios2-terminal: "USB-Blaster ", device 1, instance 0
nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Please, can anyone help me ?

Thanks.

2 Replies

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

    Here is the first console output 

    Using cable "USB-Blaster ", device 1, instance 0x00
Pausing target processor: not responding.
Resetting and trying again: OK
Initializing CPU cache (if present)
OK
Downloading 00002000 ( 0%)
Downloaded 3KB in 0.0s        
Verifying 00002000 ( 0%)
Verified OK                         
Leaving target processor paused

    I don't understand why the first pausing target processor is not responding...

    Would it be the problem ?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Hi there,

    What hardware are you using? Is it a development kit or a custom board?

    There have been many discussions on this kind of error before. Although most of the posts no longer exist on this site, you could try typing the following into Google search:

    not responding site:niosforum.com

    and view the cached results. You should get some idea of what other people have found to cause such problems.

    Also, what revision of USB-Blaster are you using? I had intermittent problems communicating with NIOS using an Altera Blaster Rev. B. I switched to using a Terasic Blaster and have never had a problem since. Later Altera Blasters should be OK too.

    Cheers