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// 
// SIMPLE PWM WITH ESP8266 & ARDUINO IDE
// USE Ticker class instead of delay() function
//

#include <Ticker.h>
#define SCALER 20

Ticker flipper;

int count = 0;
int d = 1;

void flip()
{
  // when the counter reaches a certain value, start blinking like crazy
  if (count >= PWMRANGE - 1*SCALER)
  {
    d = -1;
  }
  else if (count <= 0 + 1*SCALER) {
    d = 1;
  }
  
  count = count+d*5;
  
  analogWrite(1, count);
}

void setup() {
  //flipper.attach(0.001, flip);
  flipper.attach_ms(1, flip);  
}

void loop() {
 // non-blocking 
}

// 
// SIMPLE PWM WITH ESP8266 & ARDUINO IDE
// USE delay() function
//

int count = 0;
int d = 1;

void flip()
{
  // when the counter reaches a certain value, start blinking like crazy
  if (count >= PWMRANGE)
  {
    d = -1;
  }
  else if (count <= 1) {
    d = 1;
  }
  
  count = count+d;
  
  analogWrite(1, count);
}

void setup() {
  // setup is not required.
}

void loop() {
  flip();
  delay(2);  
}