rp-test/generate_arbitrary_waveform.c

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#include "rp.h"

#define M_PI 3.14159265358979323846

int main(int argc, char **argv){

	int i;
	int buff_size = 16384;

	/* Print error, if rp_Init() function failed */
	if(rp_Init() != RP_OK){
		fprintf(stderr, "Rp api init failed!\n");
	}

	float *t = (float *)malloc(buff_size * sizeof(float));
	float *x = (float *)malloc(buff_size * sizeof(float));
	float *y = (float *)malloc(buff_size * sizeof(float));

	for(i = 1; i < buff_size; i++){
		t[i] = (2 * M_PI) / buff_size * i;
	}

	for (int i = 0; i < buff_size; ++i){
		x[i] = sin(t[i]) + ((1.0/3.0) * sin(t[i] * 3));
		y[i] = (1.0/2.0) * sin(t[i]) + (1.0/4.0) * sin(t[i] * 4);
	}

	rp_GenWaveform(RP_CH_1, RP_WAVEFORM_ARBITRARY);
	rp_GenWaveform(RP_CH_2, RP_WAVEFORM_ARBITRARY);

	rp_GenArbWaveform(RP_CH_1, x, buff_size);
	rp_GenArbWaveform(RP_CH_2, y, buff_size);

	rp_GenAmp(RP_CH_1, 0.7);
	rp_GenAmp(RP_CH_2, 1.0);

	rp_GenFreq(RP_CH_1, 4000.0);
	rp_GenFreq(RP_CH_2, 4000.0);

	rp_GenOutEnable(RP_CH_1);
	rp_GenOutEnable(RP_CH_2);
	rp_GenSynchronise();

	/* Releasing resources */
	free(y);
	free(x);
	free(t);
	rp_Release();
}