from machine import Pin
import tm1637
import time

SER   = Pin(2,  Pin.OUT)
SRCLK = Pin(3,  Pin.OUT)
RCLK  = Pin(4,  Pin.OUT)

SW_PINS  = [5, 6, 7, 8, 9, 10, 11, 12]
switches = [Pin(p, Pin.IN, Pin.PULL_DOWN) for p in SW_PINS]

disp_dec = tm1637.TM1637(clk=Pin(20), dio=Pin(21))
disp_hex = tm1637.TM1637(clk=Pin(18), dio=Pin(19))
disp_dec._brightness = 7
disp_hex._brightness = 7

SEG_0 = 0b00111111
SEG_1 = 0b00000110

def shift_byte(val):
    for bit in range(7, -1, -1):
        SER.value((val >> bit) & 1)
        SRCLK.value(1)
        SRCLK.value(0)

def update_displays(bits):
    RCLK.value(0)
    for b in bits:
        shift_byte(SEG_1 if b else SEG_0)
    RCLK.value(1)

def update_dec(value):
    disp_dec.number(value)

def update_hex(value):
    hi = (value >> 4) & 0xF
    lo =  value       & 0xF
    disp_hex.write([0, 0,
        disp_hex.encode_digit(hi),
        disp_hex.encode_digit(lo)])

print("Binary Octet Converter ready")
prev_bits = None

while True:
    bits  = [sw.value() for sw in switches]
    value = sum(b * (1 << (7 - i)) for i, b in enumerate(bits))
    if bits != prev_bits:
        update_displays(bits)
        update_dec(value)
        update_hex(value)
        prev_bits = bits
        print(f"BIN: {''.join(str(b) for b in bits)}  DEC: {value:3d}  HEX: 0x{value:02X}")
    time.sleep_ms(50)