import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

from machine import Pin, ADC


switch = Pin(15, machine.Pin.IN)
pot = ADC(26)
led = Pin(14, machine.Pin.OUT)

# Segment pins (catodo comune → HIGH = ON)
seg_pins = [
    machine.Pin(2, machine.Pin.OUT),
    machine.Pin(3, machine.Pin.OUT),
    machine.Pin(4, machine.Pin.OUT),
    machine.Pin(5, machine.Pin.OUT),
    machine.Pin(6, machine.Pin.OUT),
    machine.Pin(7, machine.Pin.OUT),
    machine.Pin(8, machine.Pin.OUT)
]

# Codifica cifre 0–9 (catodo comune)
digits = {
    0: [1,1,1,1,1,1,0],
    1: [0,1,1,0,0,0,0],
    2: [1,1,0,1,1,0,1],
    3: [1,1,1,1,0,0,1],
    4: [0,1,1,0,0,1,1],
    5: [1,0,1,1,0,1,1],
    6: [1,0,1,1,1,1,1],
    7: [1,1,1,0,0,0,0],
    8: [1,1,1,1,1,1,1],
    9: [1,1,1,1,0,1,1]
}

def cancella():
    for p in seg_pins:
        p.value(0)

def mostra_cifra(n):
    pattern = digits[n]
    for pin, val in zip(seg_pins, pattern):
        pin.value(val)

# --- Main loop ---
while True:
    if switch.value() == 0:
        # Interruttore OFF
        cancella()
        led.value(1)
        time.sleep(0.1)
        continue

    # Interruttore ON
    led.value(0)

    lettura = pot.read_u16()
    percento = int((lettura / 65535) * 100)

    # Cifra delle decine
    if percento == 100:
        digit = 0
    else:
        digit = percento // 10

    mostra_cifra(digit)

   

    time.sleep(0.1)