42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/*
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* UPIWIN - Micro Pi Windowing Framework Kernel
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* Copyright (C) 2019 Amy Bowersox/Erbosoft Metaverse Design Solutions
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*-------------------------------------------------------------------------
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*/
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#ifndef __GPIO_H_INCLUDED
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#define __GPIO_H_INCLUDED
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#include "wintype.h"
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#define GPIO_BUTTON_COUNT 4 /* number of GPIO buttons we have */
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/* state flags for the GPIO buttons */
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#define GRB_STATE_BUTTON1 (1 << 0)
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#define GRB_STATE_BUTTON2 (1 << 1)
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#define GRB_STATE_BUTTON3 (1 << 2)
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#define GRB_STATE_BUTTON4 (1 << 3)
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#define GSB_BACKLIGHT_MAX 1023 /* maximum level for backlight */
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#define GSB_BACKLIGHT_DEFAULT GSB_BACKLIGHT_MAX
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extern HRESULT Gpio_setup(void);
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extern UINT32 Gpio_read_buttons(void);
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extern void Gpio_set_backlight(UINT32 level);
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#endif /* __GPIO_H_INCLUDED */
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