simulator_examples/dsp32_fir/fir_example.c File Reference

32 bits FIR filtering

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include <avr32/io.h>
#include "compiler.h"
#include "board.h"
#include "dsp.h"
#include "dsp_debug.h"
#include "sysclk.h"
#include "cycle_counter.h"

Macros
#define	FIR_COEF_SIZE   25
	The number of tap. More...
#define	SIZE   64
	The size of the input signal. More...

Functions
int	main (int argc, char *argv[])
	The main function. More...

Variables
A_ALIGNED dsp32_t	fir_coef [FIR_COEF_SIZE]
	The impulse response coefficients of the filter. More...
A_ALIGNED dsp32_t	x [SIZE]
	Input signal resulting from a multiplication between a cosine and a sine. More...
A_ALIGNED dsp32_t	y [SIZE-FIR_COEF_SIZE+1]
	The output buffer. More...

#define FIR_COEF_SIZE   25

The number of tap.

Referenced by main().

#define SIZE   64

The size of the input signal.

Referenced by main().

int main	(	int	argc,
		char *	argv[]
	)

The main function.

Note

the call to sysclk_init() will disable all non-vital peripheral clocks, except for the peripheral clocks explicitly enabled in conf_clock.h.

References dsp32_debug_sprintf(), dsp32_filt_fir(), dsp_debug_initialization, fir_coef, FIR_COEF_SIZE, FOSC0, Get_sys_count, i, SIZE, sysclk_init(), x, and y.

A_ALIGNED dsp32_t fir_coef[FIR_COEF_SIZE]

Initial value:

= {
    DSP32_Q(-0.01559148806),
    DSP32_Q(-0.00894210585),
    DSP32_Q(0.00000000000),
    DSP32_Q(0.01092924048),
    DSP32_Q(0.02338723209),
    DSP32_Q(0.03678830106),
    DSP32_Q(0.05045511524),
    DSP32_Q(0.06366197724),
    DSP32_Q(0.07568267286),
    DSP32_Q(0.08583936913),
    DSP32_Q(0.09354892838),
    DSP32_Q(0.09836316431),
    DSP32_Q(0.10000000000),
    DSP32_Q(0.09836316431),
    DSP32_Q(0.09354892838),
    DSP32_Q(0.08583936913),
    DSP32_Q(0.07568267286),
    DSP32_Q(0.06366197724),
    DSP32_Q(0.05045511524),
    DSP32_Q(0.03678830106),
    DSP32_Q(0.02338723209),
    DSP32_Q(0.01092924048),
    DSP32_Q(0.00000000000),
    DSP32_Q(-0.00894210585),

}

The impulse response coefficients of the filter.

Referenced by main().

A_ALIGNED dsp32_t x[SIZE]

Input signal resulting from a multiplication between a cosine and a sine.

A_ALIGNED dsp32_t y[SIZE-FIR_COEF_SIZE+1]

The output buffer.

Referenced by Adam7_deinterlace(), draw_mandel(), dsp16_filt_lms(), dsp16_filt_nlms(), dsp16_op_kaiser_i0(), dsp32_filt_lms(), dsp32_filt_nlms(), dsp32_op_kaiser_i0(), et024006_DrawLine(), gfx_draw_char_hugemem(), gfx_draw_char_progmem(), gfx_generic_draw_filled_rect(), gfx_generic_draw_line(), gfx_generic_get_pixmap(), gfx_generic_put_bitmap(), gfx_generic_put_pixmap(), gui_text_print(), h2v1_merged_upsample(), h2v2_merged_upsample(), ili9341_set_bottom_right_limit(), ili9341_set_top_left_limit(), main(), OS_SchedNew(), OSTimeDly(), removePaddingBits(), scale_by_denom(), unfilter(), ycc_rgb565_convert(), ycc_rgb_convert(), and ycck_cmyk_convert().