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Nordic Case Info
  • Case ID: 294746
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Strange problem with bsp library and CMSIS library

skajam66

Hi,

I'm developing code for the nrf5340 network core. I am including the file ../nordic_bsp/modules/nrfx/mdk/nrf5340_network.h in one of my source files. This file has the following:

#define __DSP_PRESENT                  0        /*!< DSP present or not

When I build, I get the following error and the build aborts:

../../../thirdparty/nordic-bsp/components/toolchain/cmsis/include/core_cm33.h:146:8: error: #error "Compiler generates DSP (SIMD) instructions for a devices without DSP extensions (check __DSP_PRESENT)"
  146 |       #error "Compiler generates DSP (SIMD) instructions for a devices without DSP extensions (check __DSP_PRESENT)"

Looking at core_cm33.h:

#if defined ( __CC_ARM )
  #if defined (__TARGET_FPU_VFP)
    #if defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U)
      #define __FPU_USED       1U
    #else
      #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
      #define __FPU_USED       0U
    #endif
  #else
    #define __FPU_USED         0U
  #endif
  #if defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1U)
    #if defined (__DSP_PRESENT) && (__DSP_PRESENT == 1U)
      #define __DSP_USED       1U
    #else
      #error "Compiler generates DSP (SIMD) instructions for a devices without DSP extensions (check __DSP_PRESENT)"
      #define __DSP_USED         0U
    #endif
  #else
    #define __DSP_USED         0U
  #endif

So the test for __DSP_PRESENT correctly determines that it is not so why does it throw an error? This surely is normal, not an error.

Any advice would be appreciated.

Regards,

AC

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