Problems debugging simple program in NIOS II IDE

The same problem is described in topic :

t=26738

but i haven't quite got what exactly the user do,i can't PM him yet.Any ideas to resolve this issue would be welcome ( Or clarification of the topic mentioned )

Check these:

- make sure you configured the fpga before starting Nios debugger

- if you don't have a permanent Mios licence you must keep the USB blaster connected (don't close the warning window when fpga configuration ends)

- check project and debugger properties: stdout must be set to redirect to jtag_uart module

- in debugger properties the download and reset mode must be set to "Download program in RAM" and not to "Attach to existing program on target", nor "Reset target and execute..."

- verify that when you start debug the code is actually downloaded: there should be a message in the console: download xxx kB... verify ...

well here are the messages:

Build message:

**** Build of configuration Debug for project hello_world_after_license ****

make -s all includes

Compiling hello_world.c...

../hello_world.c: In function `main':

../hello_world.c:21: warning: unused variable `g'

Linking hello_world_after_license.elf...

Info: (hello_world_after_license.elf) 55 KBytes program size (code + initialized data).

Info: 1992 KBytes free for stack + heap.

Hardware simulation is not enabled for the target SOPC Builder system. Skipping creation of hardware simulation model contents and simulation symbol files. (Note: This does not affect the instruction set simulator.)

Build completed in 1.89 seconds

Nios II Download output:

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Processor is already paused

Reading System ID at address 0x002010B0: verified

Initializing CPU cache (if present)

OK

Nios II terminal window:

nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Nios II gdb-server-output:

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Processor is already paused

Reading System ID at address 0x002010B0: verified

Listening on port 4262 for connection from GDB: 59saccepted

Exiting due to 'k' command from GDB

Leaving target processor paused

Nios II -elf-gdb:

mi_cmd_stack_list_frames: No stack.

No symbol "new" in current context.

kill

--- Quote Start ---

Nios II Download output:

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Processor is already paused

Reading System ID at address 0x002010B0: verified

Initializing CPU cache (if present)

OK

--- Quote End ---

As I suggested above, you are restarting processor without downloading code.

Check debug target properties.

The output should be (I copied here mine):

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Pausing target processor: OK

Initializing CPU cache (if present)

OK

Downloaded 336KB in 6.2s (54.1KB/s)

Verified OK

Starting processor at address 0x04000000

You may also try directly with Nios command shell:

- open a shell window (n.1) and type nios2-terminal to open a terminal session

- open another shell window (n.2) and type nios2-download <your_app_name>.elf -g

You should see in window n.1 an output similar that I reported above,

while in n.2 you'll the hello world message

This is for Nios IDE 9.0. I think it is something similar for 10.1

- select Run menu

- select Run... or Debug...

- select your target in the left pane

- choose Debugger tag in the right pane

- in "Download and Reset" section , select "Download program in RAM". Now you probably have "Attach to existing program on target", or "Reset target and execute..."

Firsr I built a project includes Nios II ,memories ,it works.

When I added a DDR2 SDRAM controller, not only the DDR2 does't work but also the system .

The pin assignment has been finished.

Can you tell me why?

Thank you!

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If you are sure about sopc system and pin assignments, then it is probably a timing problem.

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I do it on Cyclone IV,it's OK;but on Stratix III 340, it does'n.

I wonder to know if Stratix III 340 has special standard.

I use Quartus10.1 and Nios Eclipse