topic Re: No Debugging when running from external DDR RAM (MQX 4.0.1, CW10.4) in MQX Software Solutions

No Debugging when running from external DDR RAM (MQX 4.0.1, CW10.4)

friederschrempf — Fri, 21 Jun 2013 10:36:22 GMT

Because my application on the TWR-K70 needs a lot of RAM, I wanted to switch from internal SRAM to external DDR-RAM by using the predefined build and debug configurations. No matter what project I run, it works correctly, but I can't use any debug utilities. The watched variables all contain "0xbabababa" and the TAD plugin only gives me the error in the attachment.

Can somebody tell what might be wrong?

Thank you!

Re: No Debugging when running from external DDR RAM (MQX 4.0.1, CW10.4)

friederschrempf — Fri, 21 Jun 2013 12:16:52 GMT

Ok, I found the solution myself. In the memory map file (PROJ_DIR/Debugger/MK70FN1M0.map) I replaced

reserved 0x60000000 0xDFFFFFFF // Flexbus for external memory

with

range 0x60000000 0xDFFFFFFF 4 ReadWrite // Flexbus for external memory

to enable DDR memory.

Re: No Debugging when running from external DDR RAM (MQX 4.0.1, CW10.4)

soledad — Tue, 03 Dec 2013 23:44:39 GMT

Hi Frieder,

I am glad that you resolved your issue, thank you for share your solution. :smileywink:

Regards

Sol

Re: No Debugging when running from external DDR RAM (MQX 4.0.1, CW10.4)

santiago — Tue, 06 May 2014 16:43:28 GMT

Hi. Frieder,

thank you very much for your solution that it has helped me a lot. Only a clarification: the correct file name of the memory map file is K70FN1M0.mem.

Best regards

Santiago