import machine
import utime

# Define the GPIO pins for each segment on the seven-segment display
segments = [2, 3, 4, 5, 6, 8, 7, 0]

# Define the segment patterns for numbers 0-9 and characters a-d
segment_patterns = {
    '0': [0, 0, 0, 0, 0, 0, 1, 1],
    '1': [1, 0, 0, 1, 1, 1, 1, 1],
    '2': [0, 0, 1, 0, 0, 1, 0, 1],
    '3': [0, 0, 0, 0, 1, 1, 0, 1],
    '4': [1, 0, 0, 1, 1, 0, 0, 1],
    '5': [0, 1, 0, 0, 1, 0, 0, 1],
    '6': [0, 1, 0, 0, 0, 0, 0, 1],
    '7': [0, 0, 0, 1, 1, 1, 1, 1],
    '8': [0, 0, 0, 0, 0, 0, 0, 1],
    '9': [0, 0, 0, 1, 1, 0, 0, 1],
    'a': [0, 0, 0, 1, 0, 0, 0, 1],
    'b': [1, 1, 0, 0, 0, 0, 0, 1],
    'c': [0, 1, 1, 0, 0, 0, 1, 1],
    'd': [1, 0, 0, 0, 0, 1, 0, 1]
}

# Initialize the GPIO pins as outputs
for pin in segments:
    machine.Pin(pin, machine.Pin.OUT)

# Function to display a character on the seven-segment display
def display_character(char):
    if char in segment_patterns:
        pattern = segment_patterns[char]
        for i, segment_pin in enumerate(segments):
            machine.Pin(segment_pin, machine.Pin.OUT).value(pattern[i])

# Test the display by showing all characters and numbers
characters_to_display = "0123456789abcd"

while True:
    for char in characters_to_display:
        display_character(char)
        utime.sleep(1)