#include <stdio.h>
#include <math.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

#define PI 3.14159265
#define A 100             // Amplitude
#define FREQ 20           // Frequency in Hz
#define STEP 0.05         // Time step in seconds
#define SAMPLES (int)(1.0 / STEP)  // Number of samples (1 sec duration)

void app_main(void)
{
  while(1)
  {
    float sine_wave[SAMPLES];

    printf("Index,Time(s),Value\n");

    for (int i = 0; i < SAMPLES; i++) {
        float t = i * STEP;
        float value = A * sin(2 * PI * FREQ * t);
        sine_wave[i] = value;

        // Print to UART so you can copy to Excel
        printf("%d,%.2f,%.2f\n", i, t, value);
    }

    // Stop the task after printing (no infinite loop)
    vTaskDelay(pdMS_TO_TICKS(1000));
}

}