StrongIO Bench

arduino_io.cpp

#include <Arduino.h>

void setup() {
    // LED pin will act as a bookend to the IO tests.
    DDRB |= (1 << PB5); // Configure builtin LED pin for output.
    __asm__ volatile ("nop");
    PORTB |= (1 << PB5); // Set LED pin high.

    volatile uint8_t digital_data;

    pinMode(0, INPUT);
    pinMode(1, INPUT);
    pinMode(2, INPUT);
    pinMode(4, INPUT);
    pinMode(7, INPUT);
    pinMode(8, INPUT);
    pinMode(12, INPUT);

    digital_data = digitalRead(0);
    digital_data = digitalRead(1);
    digital_data = digitalRead(2);
    digital_data = digitalRead(4);
    digital_data = digitalRead(7);
    digital_data = digitalRead(8);
    digital_data = digitalRead(12);

    PORTB &= !(1 << PB5); // Set LED pin low.
    PORTB |= (1 << PB5); // Set LED pin high.

    analogWrite(5, 128);
    analogWrite(6, 128);

    analogWrite(9, 128);
    analogWrite(10, 128);

    analogWrite(3, 128);
    analogWrite(11, 128);

    PORTB &= !(1 << PB5); // Set LED pin low.
}

void loop() {
}

direct_port_io.cpp

#include <Arduino.h>

void setup() {
    // LED pin will act as a bookend to the IO tests.
    DDRB |= (1 << PB5); // Configure builtin LED pin for output.
    __asm__ volatile ("nop");
    PORTB |= (1 << PB5); // Set LED pin high.

    volatile uint8_t digital_data;

    // Set pins D0 to D7 to output.
    DDRD |= 0xFF;
    // Set pins D8 to D12 to output.
    DDRB |= 0x1F;
    __asm__ volatile ("nop");

    // Reading pins D0 to D7
    digital_data = (PORTD & PD0) != 0;
    digital_data = (PORTD & PD1) != 0;
    digital_data = (PORTD & PD2) != 0;
    digital_data = (PORTD & PD4) != 0;
    digital_data = (PORTD & PD7) != 0;

    // Reading pins D8 and D12
    digital_data = (PORTB & PB0) != 0;
    digital_data = (PORTB & PB4) != 0;

    PORTB &= !(1 << PB5); // Set LED pin low.
    PORTB |= (1 << PB5); // Set LED pin high.

    // Connect Timer0 to D5 and D6
    TCCR0A |= ((1 << COM0A1) | (1 << COM0B1));
    // Connect Timer1 to D9 and D10
    TCCR1A |= ((1 << COM1A1) | (1 << COM1B1));
    // Connect Timer2 to D3 and D11
    TCCR2A |= ((1 << COM2A1) | (1 << COM2B1));

    // Set duty for all 6 channels
    OCR0A = 128;
    OCR0B = 128;
    OCR1AL = 128;
    OCR1BL = 128;
    OCR2A = 128;
    OCR2B = 128;

    PORTB &= !(1 << PB5); // Set LED pin low.
}

void loop() {
}

strong_io.cpp

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

void setup() {
    // LED pin will act as a bookend to the IO tests.
    DDRB |= (1 << PB5); // Configure builtin LED pin for output.
    __asm__ volatile ("nop");
    PORTB |= (1 << PB5); // Set LED pin high.

    volatile PinState digital_data;

    IO::DigitalIn<Pin::D0> pin0;
    IO::DigitalIn<Pin::D1> pin1;
    IO::DigitalIn<Pin::D2> pin2;
    IO::DigitalIn<Pin::D4> pin4;
    IO::DigitalIn<Pin::D7> pin7;
    IO::DigitalIn<Pin::D8> pin8;
    IO::DigitalIn<Pin::D12> pin12;

    digital_data = pin0.read();
    digital_data = pin1.read();
    digital_data = pin2.read();
    digital_data = pin4.read();
    digital_data = pin7.read();
    digital_data = pin8.read();
    digital_data = pin12.read();

    PORTB &= !(1 << PB5); // Set LED pin low.
    PORTB |= (1 << PB5); // Set LED pin high.
    
    IO::PWM<Pin::D5> pin5;
    IO::PWM<Pin::D6> pin6;

    IO::PWM<Pin::D9> pin9;
    IO::PWM<Pin::D10> pin10;

    IO::PWM<Pin::D3> pin3;
    IO::PWM<Pin::D11> pin11;

    pin5.set_duty(128);
    pin6.set_duty(128);

    pin9.set_duty(128);
    pin10.set_duty(128);

    pin11.set_duty(128);
    pin3.set_duty(128);

    PORTB &= !(1 << PB5); // Set LED pin low.
}

void loop() {
}