Hello Nithin Kumar:
Yes, I think that function is supported. I tried to use it in a project for KL25 with CW v10.6 and it compiled without errors, just a couple of warnings since I used random parameters.
As the error implies, you may be including more parameters than required, it should only receive 5 parameters as the description indicates:
arm_status arm_rfft_init_q15(
arm_rfft_instance_q15 * S,
arm_cfft_radix4_instance_q15 * S_CFFT,
uint32_t fftLenReal,
uint32_t ifftFlagR,
uint32_t bitReverseFlag);
* @param[in, out] *S points to an instance of the Q15 RFFT/RIFFT structure.
* @param[in] *S_CFFT points to an instance of the Q15 CFFT/CIFFT structure.
* @param[in] fftLenReal length of the FFT.
* @param[in] ifftFlagR flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
* @param[in] bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.
The next threads in the community might also be useful:
https://community.freescale.com/thread/329163
https://community.freescale.com/thread/324740
Regards!,
Jorge Gonzalez
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