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TMS320F28374D: Memory usage of RFFT_adc_f32

Hang Yang
Intellectual 2801 points
Part Number: TMS320F28374D

Hi experts,

My customer using the RFFT_adc_f32 function. They found that half of the memory space required by this function is not changed before and after the process. They would like to ask that what's the use of these unchanged spaces? Is it unused or used temporarily? If these spaces are only used temporarily in RFFT process, can they use this space for temporary space of other RFFT_adc_f32 calls too?

Regards,

Hang.

  • 0
    TI__Mastermind 30185 points

    Hello Hang,

    Hang Yang said:
    They found that half of the memory space required by this function is not changed before and after the process.

    Can you clarify what you mean by this? What half of what memory? Half of an array? Half of both arrays? There are two buffers passed into this function as part of the RFFT_ADC_F32_STRUCT struct which are used in a ping-pong fashion for the algorithm. Is the input zero and it's remaining zero on the output?