import RPi.GPIO as GPIO  # For Raspberry Pi
import time

# Define GPIO pins for the 7-segment display
segment_pins = [28,27,26,22,21,20,19]

# Define GPIO pins for the keypad rows and columns
row_pins = [13,12,11,10]
col_pins = [9,8,7,6]

# Define the 7-segment display digit map
digit_map = {
    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]
}

# Setup GPIO pins
GPIO.setmode(GPIO.BOARD)
for pin in segment_pins:
    GPIO.setup(pin, GPIO.OUT)
for row_pin in row_pins:
    GPIO.setup(row_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
for col_pin in col_pins:
    GPIO.setup(col_pin, GPIO.OUT)

try:
    while True:
        # Read keypad input
        for col_pin in col_pins:
            GPIO.output(col_pin, GPIO.LOW)
            for row_pin in row_pins:
                if GPIO.input(row_pin) == GPIO.LOW:
                    key = (col_pins.index(col_pin) * len(row_pins)) + row_pins.index(row_pin)
                    if key in digit_map:
                        digit = digit_map[key]
                        for i, value in enumerate(digit):
                            GPIO.output(segment_pins[i], value)
            GPIO.output(col_pin, GPIO.HIGH)
        time.sleep(0.1)
except KeyboardInterrupt:
    GPIO.cleanup()