from machine import PWM, Pin, ADC, SoftI2C, I2C
import time
from pico_i2c_lcd import I2cLcd

i2c=SoftI2C(sda=Pin(18),scl=Pin(17),freq=400000)
lcd_addr=i2c.scan()[0]
lcd=I2cLcd(i2c,lcd_addr,2,16)

led=PWM(Pin(0))
led.freq(1000)  #1000 cycles per second
#led-duty_u16(65535) #giving maximum duty cycle

x=0

#using a loop for changing the duty cycle

adc=ADC(28)

# while True:
#     led.duty_u16(x)
#     time.sleep(0.1)
#     x+=20000
#     if(x>65535):
#         x=0

while True:
    l=adc.read_u16()
    #print(l)
    n=(l/65535)*100
    lcd.putstr("Duty cycle:")
    lcd.putstr(str(n)[:5])
    led.duty_u16(l)
    time.sleep(0.1)
    lcd.clear()