from machine import PWM, Pin, Timer,ADC
import time

load = PWM(Pin(0))
load.freq(1000)  # f = 1000Hz to reduce ripple
# load.duty_u16(32767)  # 50%
# Q1
# n = 0
# def fn(timer):
#     global n
#     load.duty_u16((65535 // 10) * n)
#     n += 1
#     n = n % 11  # Reset n when it reaches 11
# Q2
# adc=ADC(0)
# def fn(timer):
#     brightness=adc.read_u16()
#     load.duty_u16(brightness)

# Q3
bar_graph = [Pin(i, Pin.OUT) for i in range(1, 11)]

def update_led_bar(value):
    for i in range(10):
        if i < value:
            bar_graph[i].high()  # Turn on the LED
        else:
            bar_graph[i].low()  # Turn off the LED
update_led_bar(10)

# t = Timer(period=1000, mode=Timer.PERIODIC, callback=fn)