import time
time.sleep(0.1) # Wait for USB to become ready
print("Hello, Pi Pico!")

from machine import Pin,ADC
from math import log
import lcdi2c as lcd

BETA = 3950
ntc=ADC(Pin(28))

from machine import Pin,time_pulse_us
from utime import sleep_us
trig=Pin(22,Pin.OUT)
echo=Pin(21,Pin.IN)

def get_distance():
    trig.value(1)
    sleep_us(10)
    trig.value(0)
    time=time_pulse_us(echo,1,1000000)
    cm=time/58
    return cm

while 1:   

    cm=get_distance()
    print("Dist: ",cm,"cm")
    lcd.cmd_write(0x80)
    lcd.cmd_write(0x0c)

    if cm < 200:
        lcd.str_write("Dist: "+str(round(cm,2))+" Near  ")
    else:
        lcd.str_write("Dist: "+str(round(cm,2))+" Far  ")
    time.sleep(0.5)

    analogValue = ntc.read_u16()
    celsius = 1 / (log(1 / (65535. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15
    print("Tem:",celsius,"^C")
    lcd.cmd_write(0xc0)
    lcd.cmd_write(0x0c)

    if celsius < 40:
        lcd.str_write("Tem: "+str(round(celsius,2))+" Cold  ")
    else:
       lcd.str_write("Tem: "+str(round(celsius,2))+" Hot  ")
    time.sleep(0.5)