1. Digital Logic States

In the Intarva simulation, every GPIO pin operates on a Binary Logic system. There are only two stable states:

2. Pin Modes (Dual Language)

Before you can use a pin, you must define its direction. In Intarva, you can control pins using either firmware-level Python or high-level JavaScript orchestration.

Writing to an OUTPUT Pin

import { Pin } from 'intarva';

const led = new Pin('GP25');
led.write(1); // Set HIGH
                    

from machine import Pin

led = Pin(25, Pin.OUT)
led.value(1) # Set HIGH
                    

Reading from an INPUT Pin

import { Pin } from 'intarva';

const button = new Pin('GP14');
const state = button.read(); // Returns 0 or 1
                    

from machine import Pin

button = Pin(14, Pin.IN)
state = button.value() # Returns 0 or 1
                    

3. High-Impedance & Floating Pins

When a pin is set to Pin.IN, it enters a high-impedance state. It acts like a very sensitive antenna. If nothing is connected to it, the simulator might show an “X” (Floating) state because the voltage is undefined.