from machine import Pin, PWM
import time

# --- PINS (MATCHES YOUR DIAGRAM) ---
speaker = PWM(Pin(8))     # GP8 → buzzer
led = Pin(13, Pin.OUT)    # GP13 → LED

button_pins = [12, 11, 10, 9, 7, 6, 5, 4]  # GP12–GP4
buttons = [Pin(pin, Pin.IN, Pin.PULL_UP) for pin in button_pins]

# --- NOTES (Hz) ---
button_tones = [262, 294, 330, 349, 392, 440, 494, 523]

# --- TRACKING ---
button_pressed = [False] * 8
led_on = False

led.on()  # start LED OFF
print("LED value 0")

# --- MAIN LOOP ---
while True:
    pitch = 0

    # Check buttons
    for i in range(8):
        if buttons[i].value() == 0:  # button pressed
            pitch = button_tones[i]
            button_pressed[i] = True

    # Play sound
    if pitch != 0:
        speaker.freq(pitch)
        speaker.duty_u16(30000)
    else:
        speaker.duty_u16(0)

    # Turn LED on after ALL buttons pressed at least once
    if not led_on:
        all_pressed = True

        for pressed in button_pressed:
            if not pressed:
                all_pressed = False
                break

        if all_pressed:
            led.off()
            print("led value 1")
            led_on = True  # stays on forever

    time.sleep(0.01)