#include <Arduino.h>
#include <sigma_delta.h>

const int led = LED_BUILTIN;
#define pin 10

void setup() 
{
  pinMode(led, OUTPUT);
  digitalWrite(led, LOW);

  Serial.begin(115200);  

  sigmaDeltaEnable();
  sigmaDeltaSetup(0, 8*1220);
  sigmaDeltaAttachPin(pin, 0);
  
  digitalWrite(led, HIGH);
}

uint8_t val = 0;
void loop() 
{  
  delay(10000);
  sigmaDeltaWrite(0, val); 
  val += 8;
}