import utime
import math
import machine
from machine import Pin
from machine import I2C
from lcd_api import LcdApi
from pico_i2c_lcd import I2cLcd

I2C_ADDR    = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16

SDA_PIN = 0
SCL_PIN = 1

PLAY_PIN =2
RESET_PIN = 3

print("running stopwatch")
i2c = I2C(0, sda=machine.Pin(SDA_PIN), scl=machine.Pin(SCL_PIN), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

button_play = Pin(PLAY_PIN, Pin.IN, Pin.PULL_UP)
button_reset = Pin(RESET_PIN, Pin.IN, Pin.PULL_UP)

lcd.putstr("Stopwatch")
utime.sleep(2)
lcd.clear()
lcd.hide_cursor()
timer = 0
running = False

lcd.clear()
lcd.putstr("Stopwatch")

while True:

  if (button_play.value() == False):
    running = not running
    print("status:"+str(running))

    utime.sleep(0.5)
  if (button_reset.value() == False):
      print("Reset")
      timer = 0
      lcd.clear()
      lcd.putstr("Stopwatch")
      utime.sleep(0.5)
  
  lcd.move_to(0,1)
  lcd.putstr(str(math.floor(timer)))

  if (running):
    timer += (0.1)
    utime.sleep(0.1)