int ontime,offtime,duty;
float freq,period;

uint8_t pwm=0;

#include "U8glib.h"

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST); // Fast I2C / TWI

int progress = 0;

void setup() {
  u8g.setFont(u8g_font_tpssb);
  u8g.setColorIndex(1);
  pinMode(2, INPUT);
}

void loop() {
  ontime = pulseIn(10,HIGH);
  offtime = pulseIn(10,LOW);
  period = ontime+offtime;
  freq = 1000000.0/period;
  duty = (ontime/period)*100;


  freq = 1000000.0/period;
  
 
  u8g.firstPage();
  do {
    u8g.drawStr(25, 50, "Power: ");
    u8g.setPrintPos(70,50);
    u8g.print(freq);
    u8g.drawFrame(0, 10, 128, 20);
    u8g.drawBox(10, 15, progress, 10);
  } while ( u8g.nextPage() );

  if (progress < 108) {
    progress++;
  } else {
    progress = 0;
  }


}