#define NUM_POINTS 1000
#define PI 3.14159265359

double my_sin(double x) {
    double result = 0.0;
    double term = x;
    double power = x;
    double factorial = 1.0;
    double sign = 1.0;

    for (int i = 1; i <= 10; ++i) {
        result += term;
        sign *= -1;
        power *= x * x;
        factorial *= (2 * i) * (2 * i + 1);
        term = sign * power / factorial;
    }

    return result;
}

void setup() {
  Serial.begin(115200);
  pinMode(PB11, OUTPUT); // PB11 é um pino disponível no Blue Pill
}

void loop() {
    double step = 2 * PI / NUM_POINTS;
    double angle = 0.0;

    for (int i = 0; i < NUM_POINTS; ++i) {
        double sin_value = my_sin(angle);
        Serial.println(sin_value);
        angle += step;
        
        if(sin_value > 0){
            digitalWrite(PB11, HIGH);
        } else {
            digitalWrite(PB11, LOW);
        }

        delay(1); // Delay pequeno para visualizar o LED piscando
    }
}