lukicdarkoo

// Notes for Arduino LCD Keypad Shield
// Create custom character: https://omerk.github.io/lcdchargen/
// String reference: https://www.arduino.cc/en/Reference/StringObject
// LCD reference: https://www.arduino.cc/en/Reference/LiquidCrystal
// Stream reference: http://playground.arduino.cc/Main/StreamingOutput

#define _BYTE(a)    _BYTE_CODE(a)
#define _HEX(a)     _BASED(a, HEX)
#define _DEC(a)     _BASED(a, DEC)
#define _OCT(a)     _BASED(a, OCT)

lukicdarkoo

'''
Basic implementation of DFT algorithm in Python
X_k = sum(x_n * exp(-j*2*PI*k*n/N))

Reference:
https://en.wikipedia.org/wiki/Discrete_Fourier_transform
'''

__author__ = 'Darko Lukic'
__email__ = '[email protected]'

lukicdarkoo

'''
Basic implementation of Cooley-Tukey FFT algorithm in Python

Reference:
https://en.wikipedia.org/wiki/Fast_Fourier_transform
'''

__author__ = 'Darko Lukic'
__email__ = '[email protected]'

lukicdarkoo

#include "FFT.h"

void fft(int *x_in, 
	std::complex<double> *x_out,
	int N) {

	// Make copy of array and apply window
	for (int i = 0; i < N; i++) {
		x_out[i] = std::complex<double>(x_in[i], 0);
		x_out[i] *= 1; // Window

lukicdarkoo

'''
Basic implementation of FIR filter with given coefficients

Y[n] = sum(f(i)*g(n-i))
'''

__author__ = 'Darko Lukic'
__email__ = '[email protected]'

lukicdarkoo

#include "FFT.h"

#if defined(MODE_PARALLEL_DEV) || defined(MODE_PARALLEL_TEST)
class FFTTask: public task {
public:
	const int N;
	std::complex<double> *x;
	FFTTask(std::complex<double> *_x, int _N) :
		  x(_x), N(_N)
	{}

lukicdarkoo

% Moved from http://pastebin.com/YD8FGFL8
function t = hj(f, x0, step, e)
    d = eye(length(x0));
    t = x0;
    xb = x0;
    
    while step > e
        % Pretrazivanje u okolini tacke
        for i = 1:length(d)
            t_p = t + step * d(i, :);

lukicdarkoo

% Moved from: http://pastebin.com/YD8FGFL8
function out = powel(f, x0, e)
    [directions, ~] = size(x0);
    u = eye(directions);
    
    t(:, 1) = x0;
    xNew = x0;
    
    while true
        xOld = xNew

lukicdarkoo

/*
    Coded by Darko Lukic <[email protected]>
    Node.js and C++ bindings with events (EventEmitter)
*/

#include <nan.h>
#include <iostream>

using v8::Local;
using v8::FunctionTemplate;

lukicdarkoo

#include "Bits.h"

void Bits_ByteDump(uint64_t value, uint8_t numberOfBytes) {
    int8_t i;
 
    for (i = numberOfBytes * 8 - 1; i >= 0; i--) {
        printf("%ld", (value >> i) & 1);

		if (i % 8 == 0) {
            printf(" ");