Memory map problems

[Morten2000]

Hi

I am using Quartus 18.1 with a NIOS processor and uses Eclipse Mars 2.

I have a working system where I have an onchip_mem and an onchip_flash. I can then have some registers in the mem saved to flash when I write a command so they are restored after power cycle.

I am trying to increase the number of registers from 42 to 70. But everytime I change anything in the platform designer regarding the memory map nothing works anymore.

My original memory looks like this:

If I change any of the starting addresses it doesn't work anymore. I also tried to use 'Assign Base Addresses' from the menu.

- After I change the address I generate the HDL.

- Then I go to Eclipse and generates BSP

- Then I compile the Application

- Then I compile Quartus program

- Then I convert programming files and program device

Then nothing gets saved to Flash and I just read 0x00.

Are there anything else I need to do or somehow to easily see what is wrong?

One other observation. If I keep my original code (which is working) and just press 'Assign Base Addresses' then

onchip_adc_sequencer_csr changes address to 0x0010_9330

onchip_flash.csr changes to 0x00109338

And again the flash isn't working anymore.

Any suggestions?

[EBERLAZARE_I_Intel]

Hi,

Which settings for the "I am trying to increase the number of registers from 42 to 70." in the Platform Designer did you change?

Can you take a screenshot of that?

Also, if you remain to the original the number of registers of 42 does it work as exepected?

[Morten2000]

Hi,

Thank you for your reply.

If I just keep the code as it is and keeps the registers at 42 it doesn't work if I use the "Assign Base Addresses".

The code still works, but it doesn't have access to the Flash memory.

I guess it is because onchip_flash.csr changes from 0x00109340 to 0x00109338. I would think that a compile would be enough to make the change and everything work. But that is not the case.

Is there something I am missing?

[EBERLAZARE_I_Intel]

Hi,

Your image seems too small, can you share your .qsys file? I can take a look.

May I know what is your intent for your design? Do you just want to access these registers on the OCRAM? And do some read and write?

[Morten2000 · Accepted solution]

Found the mistake.

The memory initialization file was pointing to a wrong file.

[EBERLAZARE_I_Intel]

Hi,

Oh you mean in the RAM IP settings at the bottom?

Glad you fixed your issue, do you have any further questions?

[EBERLAZARE_I_Intel]

Hi,

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