AStar32U4Buttons.h

Go to the documentation of this file.

// Copyright Pololu Corporation.  For more information, see http://www.pololu.com/

#pragma once

#include <Pushbutton.h>
#include <FastGPIO.h>
#include <USBPause.h>
#include <SPIPause.h>
#include <util/delay.h>

#define A_STAR_32U4_BUTTON_A 14

#define A_STAR_32U4_BUTTON_B IO_D5

#define A_STAR_32U4_BUTTON_C 17

class AStar32U4ButtonA : public Pushbutton
{
public:
    AStar32U4ButtonA() : Pushbutton(A_STAR_32U4_BUTTON_A)
    {
    }
};

class AStar32U4ButtonB : public PushbuttonBase
{
public:
    virtual bool isPressed()
    {
        // These objects take care of disabling USB interrupts temporarily
        // and restoring the pin to its previous state at the end.
        USBPause usbPause;
        FastGPIO::PinLoan<A_STAR_32U4_BUTTON_B> loan;

        FastGPIO::Pin<A_STAR_32U4_BUTTON_B>::setInput();
        _delay_us(3);
        return !FastGPIO::Pin<A_STAR_32U4_BUTTON_B>::isInputHigh();
    }
};

class AStar32U4ButtonC : public PushbuttonBase
{
public:
    virtual bool isPressed()
    {
        SPIPause spiPause;
        USBPause usbPause;
        FastGPIO::PinLoan<A_STAR_32U4_BUTTON_C> loan;

        FastGPIO::Pin<A_STAR_32U4_BUTTON_C>::setInput();
        _delay_us(3);
        return !FastGPIO::Pin<A_STAR_32U4_BUTTON_C>::isInputHigh();
    }
};