dsps_d_gen.h File Reference

#include "dsp_err.h"

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Functions
esp_err_t	dsps_d_gen_f32 (float *output, int len, int pos)
	delta function

Function Documentation

dsps_d_gen_f32()

esp_err_t dsps_d_gen_f32	(	float *	output,
		int	len,
		int	pos )

delta function

The function generate delta function. output[i]=0, if i=[0..N) output[i]=1, if i=pos, pos: [0..N-1) The implementation use ANSI C and could be compiled and run on any platform

Parameters

output	output array.
len	length of the input signal
pos	delta function position

Returns

• ESP_OK on success
• One of the error codes from DSP library

Definition at line 17 of file dsps_d_gen.c.

{
    if (pos >= len) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    if (pos <    0) {
        return ESP_ERR_DSP_PARAM_OUTOFRANGE;
    }
    for (int i = 0 ; i < len ; i++) {
        output[i] = 0;
    }
    output[pos] = 1;
    return ESP_OK;
}

References ESP_ERR_DSP_PARAM_OUTOFRANGE, and ESP_OK.