Why does void loop() stop after some samples?

Question

I am not getting any compile time error. After some samples of data void loop() stops executing. Please let know what the problem is. Below is my code.

Thanks and regards Thippeswamy

#include<SPI.h>
float amplitude=1.5;
int freq1=20; int freq2=12;
int k=20;float A= amplitude*k; 
int Fs=10550; float sine[5000]; float Fs1=3000;
int i=0;int reg1=1; int reg2=0;
int sample1=Fs/freq1; float sample2=Fs1/freq2;

void setup() {
  int SS=10; 
  pinMode(SS, OUTPUT);
  SPI.begin();  
}

void data(int reg, int data) {
  digitalWrite(SS,LOW);
  SPI.transfer(reg);
  SPI.transfer(data);
  digitalWrite(SS,HIGH);
}

void loop() {
  for(int j=0;j<sample1||i<sample2||i>=sample2);j++) {
    float s=A*sin((2*3.14*freq1*j)/Fs);
    sine[j]=s+190;
    data(reg1,sine[j]);
    if(i<=sample2) {
      float s=A*sin((2*3.14*freq2*i)/Fs1);
      sine[i]=s+190;
      data(reg2,sine[i]);
      i++;
    } else if(i>sample2) {
      float s=A*sin((2*3.14*freq2*i)/Fs1);
      sine[i]=s+190;
      data(reg2,sine[i]);
      i++;
    }
  }
}

Answer 1

float sine[5000]
...
sine[j]=s+190;    

A float takes 4 bytes. You are allocating 5000 of them which is 20000 bytes. The Uno has 2048 bytes of RAM. Thus you are running out of RAM and overwriting something you shouldn't be.

---

As pointed out on the Arduino forum, your for loop which tests for:

i < sample2 || i >= sample2

will always be true. Of course i will be either less than or greater than or equal to sample2.