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OSeme's avatar
OSeme
Icon for New Contributor rankNew Contributor
7 years ago

Nios II Eclipse stuck while compiling newlib for a smallc C library

I am building an example project for Nios II soft core processor. The example project is board_diag , which seems to show how to interface with peripherals using Nios II processor. I couldn't find do...
AnandRaj_S_Intel's avatar
AnandRaj_S_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

  1. Have you enabled both the "Enable Small C library" and the "Enable Lightweight Device Driver API" option? try to disable and recompile.
  2. scanf/sscanf is not supported in small C library. Change it from the BSP settings and try.

Check below link for more information on the error

https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/solutions/rd10152012_873.html

https://www.intel.com/content/www/us/en/programmable/documentation/mwh1416947091611/mwh1416946758774/mwh1416946771586/mwh1416946790611.html

Few useful links

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/nios2/n2sw_nii5v2gen2.pdf

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/tt/tt_my_first_nios_sw.pdf

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_embedded_ip.pdf

Regards

Anand

OSeme's avatar
OSeme
Icon for New Contributor rankNew Contributor
7 years ago

Hello Anand,

I enabled Reduced device drivers and small C library. If I don't do that, I get error message that I am out of memory. I am using 40960 bytes of memory.

What else I discovered yesterday, is if I redo, start new application, it works eventually. It too me over 50 minutes to build BSP package. It obviously should not take that long. Why is it taking so long? Are there any settings? Is there an issue with Nios II compiler that result in a large footprint?

--Alex

  • dsmirnov's avatar
    dsmirnov
    Icon for Occasional Contributor rankOccasional Contributor
    7 years ago

    As for compilation time you can add precompiled standard libraries in the Build settings, or chage settings of re-build/clean by excluding compiled libraries