from machine import Pin
from time import sleep

# Configure rows as output pins
rows = [Pin(0, Pin.OUT), Pin(1, Pin.OUT), Pin(2, Pin.OUT)]

# Configure columns as input pins with pull-down resistors
columns = [Pin(3, Pin.IN, Pin.PULL_DOWN), Pin(4, Pin.IN, Pin.PULL_DOWN), Pin(5, Pin.IN, Pin.PULL_DOWN), 
           Pin(6, Pin.IN, Pin.PULL_DOWN), Pin(7, Pin.IN, Pin.PULL_DOWN)]

def scan_matrix():
    """Scan the button matrix and print pressed buttons."""
    for row_idx, row in enumerate(rows):
        row.high()  # Set the current row HIGH
        for col_idx, col in enumerate(columns):
            if col.value() == 1:  # Check if the column pin reads HIGH
                print(f"Button pressed at Row {row_idx + 1}, Column {col_idx + 1}")
                sleep(0.1)  # Debounce delay
        row.low()  # Set the row back to LOW
    sleep(0.1)

while True:
    scan_matrix()