from machine import Pin, I2C
from time import sleep_ms

import ssd1306

# I2C pin assignment (delete first parameter on error)
i2c = I2C(0, scl=Pin(22), sda=Pin(21))

oled_width = 128
oled_height = 64

# create oled-display instance
oledSensor = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c)

minuteCounter = 0 # initialize minute-counter
secondCounter = 0 # initialize second-counter

while True:
  oledSensor.fill(0) # clear display
  oledSensor.text('min: ' + str(minuteCounter), 0, 13)
  oledSensor.text('sec: ' + str(secondCounter), 0, 25)
  oledSensor.show()

  secondCounter = secondCounter + 1;
  if secondCounter == 60:
    secondCounter = 0
    minuteCounter = minuteCounter + 1
  
  sleep_ms(1000); # pause for one second (1.000 milliseconds)