314 lines
12 KiB
C
314 lines
12 KiB
C
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/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#ifndef IOT_MATRIX_API_H
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#define IOT_MATRIX_API_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \defgroup AFFT_APIs AFFT APIs
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* @brief AFFT APIs
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*
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*
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*/
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/** @addtogroup AFFT_APIs
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* @{
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*
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*/
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/**
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* @brief Usage:
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// AFFT apis are used for FFT calculation.
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FFT size support 256, 512, 1024, 2048 read data, and 128, 256, 512, 1024
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complex data.
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// test case : calculate 2048 FFT, data format is low 24 bits valid.
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// the pointer of input data
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uint32_t *src = ...;
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// the pointer of output data
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uint32_t *dst = ...;
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// the length of data
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uint32_t data_len = ...;
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// get fft/ifft result
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iot_afft_real_fft(dst, src, 2048, AFFT_FMT_LOW_24BIT, AFFT_REAL_2048);
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// another calling function:
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uint32_t addr = iot_afft_get_address();
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iot_real_fft_cfg(AFFT_FMT_LOW_24BIT, AFFT_REAL_2048);
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// move data into afft addr
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...;
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// start
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iot_afft_start();
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// get the output data from afft addr
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...;
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*/
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/**
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* @brief afft_data_fmt_t - input word format
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* @param AFFT_FMT_LOW_24BIT low 24 bit valid
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* @param AFFT_FMT_HIGH_24BIT high 24 bit valid
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* @param AFFT_FMT_FLOAT_32BIT 32 bit valid
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* @param AFFT_FMT_16BIT data[0]: low 16 bit, data[1]: high 16 bit
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*/
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/* [TODO]: KL3 need to adapt the previous program */
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typedef enum {
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/* KL2 */
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AFFT_FMT_LOW_24BIT = 0,
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AFFT_FMT_HIGH_24BIT,
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AFFT_FMT_FLOAT_32BIT,
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AFFT_FMT_16BIT,
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/* KL3 */
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AFFT_FMT_KL3_32BIT = 0,
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AFFT_FMT_KL3_LOW_28BIT,
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AFFT_FMT_KL3_FLOAT_32BIT,
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AFFT_FMT_KL3_DOUBLE_16BIT_0, //high 16bits is data1, low 16bits is data0
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AFFT_FMT_KL3_LOW_24BIT,
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AFFT_FMT_KL3_LOW_20BIT,
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AFFT_FMT_KL3_LOW_18BIT,
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AFFT_FMT_KL3_DOUBLE_16BIT_1, //high 16bits is data0, low 16bits is data1
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} afft_data_fmt_t;
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typedef enum {
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AFFT_REAL_256 = 0,
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AFFT_REAL_512,
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AFFT_REAL_1024,
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AFFT_REAL_2048,
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AFFT_REAL_64,
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AFFT_REAL_128,
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} afft_real_mode_t;
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typedef enum {
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AFFT_COMPLEX_128 = 0,
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AFFT_COMPLEX_256,
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AFFT_COMPLEX_512,
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AFFT_COMPLEX_1024,
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AFFT_COMPLEX_32,
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AFFT_COMPLEX_64,
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} afft_complex_mode_t;
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typedef enum {
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AFFT_WIN_RECTANGULAR = 0,
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AFFT_WIN_HANNING,
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AFFT_WIN_HAMMING,
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} afft_win_sel_t;
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/**
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* @brief iot_afft_real_fft() - calculate real data fft
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input format as below:
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0 31 0 31 0 ... 31 0 31
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|---------|---------|---------|---------|
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| real[0] | real[1] | ... | real[n] |,
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data type is real, n is the number of input real data,
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support 256,512,1024,2048 FFT calculation, reference
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to afft_real_mode_t struct.
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Output format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[m] | imag[m] |,
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ouput complex data, include real and imaginary part.
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m is the number of complex data, m = n/2.
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* @param dst the destination pointer of FFT
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* @param src the source pointer of real data
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* @param len the length of source data, uint is word
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_afft_real_fft(uint32_t *dst, uint32_t *src, uint32_t len,
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uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_afft_real_ifft() - calculate real data ifft
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input format as below:
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0 31 0 31 0 ... 31 0 31
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|---------|---------|---------|---------|
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| real[0] | real[1] | ... | real[n] |,
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data type is real, n is the number of input real data,
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support 256,512,1024,2048 FFT calculation, reference
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to afft_real_mode_t struct.
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Output format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[m] | imag[m] |,
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ouput complex data, include real and imaginary part.
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m is the number of complex data, m = n/2.
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* @param dst the destination pointer of IFFT
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* @param src the source pointer of real data
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* @param len the length of source data, uint is word
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_afft_real_ifft(uint32_t *dst, uint32_t *src, uint32_t len,
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uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_afft_complex_fft() - calculate complex data fft
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input format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[n] | imag[n] |,
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data type is complex,n is the number of input real data,
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support 128,256,512,1024 FFT calculation, reference
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to afft_complex_mode_t struct.
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Output format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[m] | imag[m] |,
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ouput complex data, include real and imaginary part.
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m is the number of complex data, m = n.
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* @param dst the destination pointer of FFT
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* @param src the source pointer of complex data
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* @param len the length of source data, uint is word
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_complex_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_afft_complex_fft(uint32_t *dst, uint32_t *src, uint32_t len,
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uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_afft_complex_ifft() - calculate complex data ifft
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input format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[n] | imag[n] |,
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data type is complex,n is the number of input real data,
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support 128,256,512,1024 FFT calculation, reference
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to afft_complex_mode_t struct.
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Output format as below:
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0 31 0 31 0 ... 31 0 31 0 31
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|---------|---------|---------|---------|---------|
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| real[0] | imag[1] | ... | real[m] | imag[m] |,
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ouput complex data, include real and imaginary part.
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m is the number of complex data, m = n.
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* @param dst the destination pointer of IFFT
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* @param src the source pointer of complex data
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* @param len the length of source data, uint is word
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_complex_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_afft_complex_ifft(uint32_t *dst, uint32_t *src, uint32_t len,
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uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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void iot_afft_init();
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/**
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* @brief iot_real_fft_cfg() - real data fft configuration
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_real_fft_cfg(uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_real_ifft_cfg() - real data ifft configuration
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_real_ifft_cfg(uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_complex_fft_cfg() - complex data fft configuration
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_complex_fft_cfg(uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_complex_ifft_cfg() - complex data ifft configuration
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* @param bit the format of data, reference to afft_data_fmt_t
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* @param mode the mode of TTF, reference to afft_real_mode_t
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* @param stage the right shift bits of twiddle stage
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* @param lsf_in the left-shift bits of fft/ifft input
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* @param rsf_out the right-shift bits of fft/ifft output
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*/
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void iot_complex_ifft_cfg(uint8_t bit, uint8_t mode, uint8_t stage, uint8_t lsf_in, uint8_t rsf_out);
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/**
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* @brief iot_complex_fft_win() - select window
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* @param win window, see afft_win_sel_t
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* @return ERR_OK - success; ERR_NOSUPP - not support
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*/
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uint8_t iot_complex_fft_win(afft_win_sel_t win);
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/**
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* @brief iot_afft_start() - start to run afft module
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*/
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void iot_afft_start();
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/**
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* @brief iot_afft_get_address() - get afft address to read or write
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* @return return the afft address
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*/
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uint32_t iot_afft_get_address();
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/**
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* @brief iot_afft_real_mode_id_get() - get afft mode id
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* @return return the afft mode id, see afft_real_mode_t
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*/
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uint8_t iot_afft_real_mode_id_get(uint32_t data_len);
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/**
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* @brief iot_afft_complex_mode_id_get() - get complex fft mode id
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* @return return the complex mode id, see afft_complex_mode_t
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*/
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uint8_t iot_afft_complex_mode_id_get(uint32_t data_len);
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#ifdef __cplusplus
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}
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#endif
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#endif //IOT_AFFT_API_H
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