new_io.cpp

#include <Arduino.h>
#include "strong_io.h"

IO::PWM<Pin::D3> output1;
IO::DigitalOut<Pin::D4> output2;
IO::DigitalIn<Pin::D2> input1;
IO::AnalogIn<Pin::A0> input2;

void setup() {
}

void loop() {
  output1.set_duty(128);
  output2.write(PinState::Low);
  input1.read();
  input2.read();
}

////// Build Output
Compiling .pio\build\nanoatmega328\src\new_blink.cpp.o
Linking .pio\build\nanoatmega328\firmware.elf
Building .pio\build\nanoatmega328\firmware.hex
Checking size .pio\build\nanoatmega328\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [          ]   0.4% (used 9 bytes from 2048 bytes)
Flash: [          ]   1.8% (used 554 bytes from 30720 bytes)

old_io.cpp

#include <Arduino.h>

const int output1 = 3;
const int output2 = 4;
const int input1 = 2;
const int input2 = A0;

void setup() {
    pinMode(output1, OUTPUT);
    pinMode(output2, OUTPUT);
    pinMode(input1, INPUT);
    
    // The new IO code does this for analog pins to ensure they're in a known state.
    pinMode(input2, INPUT);
}

void loop() {
    analogWrite(output1, 128);
    digitalWrite(output1, LOW);
    digitalRead(input1);
    analogRead(input2);
}

////// Build Output
Compiling .pio\build\nanoatmega328\src\new_blink.cpp.o
Linking .pio\build\nanoatmega328\firmware.elf
Building .pio\build\nanoatmega328\firmware.hex
Checking size .pio\build\nanoatmega328\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [          ]   0.4% (used 9 bytes from 2048 bytes)
Flash: [          ]   3.6% (used 1116 bytes from 30720 bytes)