from machine import ADC,I2C,Pin,Timer
from pico_i2c_lcd import I2cLcd
import utime,math
sda=Pin(0)
scl=Pin(1)

i2c=I2C(0,sda=sda,scl=scl,freq=400000)
device=i2c.scan()
i2caddr=device[0]

lcd=I2cLcd(i2c,i2caddr,2,16)

A0=ADC(Pin(26))
while True:
    lcd.clear()
    val=A0.read_u16()
    angle=(val/65535)*90
    lcd.putstr(str(angle))
    utime.sleep(1)


# led_g=Pin(3,Pin.OUT)
# led_y=Pin(4,Pin.OUT)
# led_r=Pin(6,Pin.OUT)




# def temp_range(temp):
#     if temp>=10 and temp <=33:
#         return 0
#     return 1

# def adc_to_temp(adc_value):
#     temp=1/((math.log(1/((65535/adc_value)-1)))/3950 + 1/298.15)-273.15
#     return temp

# temp_out_of_range_start=None    

# def fn(timer):
#     global temp_out_of_range_start
#     adc_value = A0.read_u16()  
#     temp_celsius = adc_to_temp(adc_value)

#     lcd.clear()
#     lcd.putstr(str(temp_celsius))

#     if temp_range(temp_celsius):
#         led_y.on()
#         temp_out_of_range_start = None
    
#     else:
#         led_y.on()
#         led_g.off()
#         led_r.off()
        

        
#         #when temp_out_of_range value is set
#         if utime.time() - temp_out_of_range_start > 5:
#             led_g.off()
#             led_r.on()
#             lcd.clear()
#             lcd.putstr("DANGER!")
#     utime.sleep(1)

# timer=Timer(freq=1,mode=Timer.PERIODIC,callback=fn)