BroadcomGPIO.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __LIBARCH_ARM_BROADCOMGPIO_H
#define __LIBARCH_ARM_BROADCOMGPIO_H
 
#include <FreeNOS/System.h>
#include <Types.h>
 
class BroadcomGPIO
{
  private:
 
    static const Address GPIOBase = 0x200000;
 
    enum Registers
    {
        FunctionSelect0 = 0
    };
 
  public:
 
    enum Mode
    {
        Input     = 0,
        Output    = 1,
        Function0 = 4,
        Function1 = 5,
        Function2 = 6,
        Function3 = 7,
        Function4 = 3,
        Function5 = 2
    };
 
    enum Result
    {
        Success,
        NotFound,
        IOError
    };
 
  public:
 
    BroadcomGPIO();
 
    virtual Result initialize();
 
    virtual Result setAltFunction(Size pin, uint function);
 
  private:
 
    Arch::IO m_io;
};
 
#endif /* __LIBARCH_ARM_BROADCOMGPIO_H */