Streamlit app to check GPIO

checkgpio.py

import digitalio
import board
import time
import streamlit as st

# Define the list of all pin names
all_pin_names = [f"D{i}" for i in range(1, 41)]

# Initialize the GPIO pins for the switches
defined_pin_numbers = [3, 5, 7, 8, 10, 11, 12, 13, 15, 16, 18, 19, 21, 22, 23, 24, 27, 28, 29, 31, 32, 33, 35, 37, 38, 40]
switch_pins = [digitalio.DigitalInOut(eval(f"board.D{i}")) for i in defined_pin_numbers]
pin_names = [f"D{i}" for i in defined_pin_numbers]

for switch_pin in switch_pins:
    switch_pin.direction = digitalio.Direction.INPUT

# Define a Streamlit app function
def app():
    # Set up the Streamlit app layout
    st.title("GPIO Input Monitor")
    st.write("Monitoring GPIO inputs...")
    table = st.empty()

    # Start a while loop to continuously read the switch states
    while True:
        # Read the switch values and store them in a dictionary
        switch_values = {}
        for i, switch_pin in enumerate(switch_pins):
            switch_value = switch_pin.value
            switch_values[pin_names[i]] = switch_value

        # Update the Streamlit table with the current switch values
        table_data = []
        for i, pin_name in enumerate(all_pin_names):
            if i % 2 == 0:
                left_pin = pin_name
                left_value = switch_values.get(left_pin, '-')
                row = {"Value L": str(left_value), "Pin# L": left_pin}
            else:
                right_pin = pin_name
                right_value = switch_values.get(right_pin, '-')
                row["Pin# R"] = right_pin
                row["Value R"] = str(right_value)
                table_data.append(row)
        table.table(table_data)

        # Wait for a short period before reading the switches again
        time.sleep(0.5)

# Run the Streamlit app
if __name__ == "__main__":
    app()

You need the Adafruit Blinka library and streamlit to run this.