CCS/LAUNCHXL-F28379D: Time consuming of icfft/cfft and linear fitting library functions

Dear Hao,

Thanks for your questions.

Unfortunately there are currently no C2000 library routines for linear curve fitting.

The execution benchmarks for the cfft_32t function can be found in Table 5 on p.28 of the user's guide for the FPU32 DSP software lib. If you have installed the latest C2000Ware in the default location, you can find the document at:
C:\ti\c2000\C2000Ware_1_00_04_00\docs

The inverse operation benchmarks are on p.45 of the same document.

Please post back if anything's unclear.  Thanks again.

Regards,

Richard

Hi Hao,

Do you mean a #define shared between two projects, or passing data between the CPUs? If the former, couldn't you include the same header in both projects?

To share data between CPUs you have two options:
- load the data to global shared RAM blocks, or
- use the IPC module.

In the first case, CPU2 would write the matrix into the appropriate GS memory block which CPU1 could read. You configure write access using the GSxMSEL register.

In the latter case, CPU2 would write the matrix into IPC message RAM and use the IPC flags to signal to CPU1 that the data is ready. I suggest this is the better method since you can synchronize data accesses.

Both methods are covered nicely in module 11 of the multi-day training course for this device, which you can access at:
processors.wiki.ti.com/.../C2000_Multi-Day_Workshop

Regards,

Richard