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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
#ifndef PIO_KEYPAD_H
#define PIO_KEYPAD_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include <board.h>
//------------------------------------------------------------------------------
// Global Definitions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Global Macros
//------------------------------------------------------------------------------
//enable keypad press interrupt
#define PIO_KeyPadEnableKPIt(pPIO) ((pPIO)->KIER = 1<<0)
//enable keypad release interrupt
#define PIO_KeyPadEnableKRIt(pPIO) ((pPIO)->KIER = 1<<1)
//disable keypad press interrupt
#define PIO_KeyPadDisableKPIt(pPIO) ((pPIO)->KIDR = 1<<0)
//disable keypad release interrupt
#define PIO_KeyPadDisableKRIt(pPIO) ((pPIO)->KIDR = 1<<1)
//enable keypad controller interrupt
#define PIO_KeyPadEnableIt(pPIO, mode) {switch(mode):\
case 1:PIO_KeyPadEnableKPIt(pPIO);break;\
case 2:PIO_KeyPadEnableKRIt(pPIO);break;\
case 3:PIO_KeyPadEnableKPIt(pPIO);\
PIO_KeyPadEnableKRIt(pPIO);break;\
default:break;\
}
//disable keypad controller interrupt
#define PIO_KeyPadDisableIt(pPIO, mode) {switch(mode):\
case 1:PIO_KeyPadDisableKPIt(pPIO);break;\
case 2:PIO_KeyPadDisableKRIt(pPIO);break;\
case 3:PIO_KeyPadDisableKPIt(pPIO);\
PIO_KeyPadDisableKRIt(pPIO);break;\
default:break;\
}
//get keypad controller interrupt mask
#define PIO_KeyPadGetItMask(pPIO) ((pPIO)->PIO_KIMR)
//------------------------------------------------------------------------------
/// Calculates the size of an array of Pin instances. The array must be defined
/// locally (i.e. not a pointer), otherwise the computation will not be correct.
/// \param pPins Local array of Pin instances.
/// \return Number of elements in array.
//------------------------------------------------------------------------------
#define PIO_LISTSIZE(pPins) (sizeof(pPins) / sizeof(Pin))
//------------------------------------------------------------------------------
// Global Types
//------------------------------------------------------------------------------
typedef enum {
FALSE,
TRUE
} bool;
typedef struct _KeyPadConfig {
bool enable;//keypad controller enable or disable
unsigned char col:3;//config column size
unsigned char row:3;//config row size
unsigned int debouncing;//config debouncing
} KeyPadConfig;
typedef struct _KeyColRow {
unsigned char row:3;
unsigned char col:3;
} KeyColRow;
typedef struct _KeyDownEvent {
bool press;//at least 1 pressed key detected, or 0
unsigned char keyPressNum;//simultaneously pressed key number
KeyColRow preKeyMatrix[4];//pressed key matrix
} KeyDownEvent;
typedef struct _KeyUpEvent {
bool release;//at least 1 released key detected, or 0
unsigned char keyRelNum;//simultaneously released key number
KeyColRow relKeyMatrix[4];//released key matrix
} KeyUpEvent;
typedef struct _KeyEvent {
KeyDownEvent kdEvent;
KeyUpEvent kuEvent;
} KeyEvent;
//------------------------------------------------------------------------------
// Global Access Macros
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Global Functions
//------------------------------------------------------------------------------
void PIO_KeyPadConfig(AT91S_PIO *pPIO, KeyPadConfig *config);
void PIO_GetKeyStatus(AT91S_PIO *pPIO, KeyEvent *event);
void PIO_KeypadEnableIt(AT91S_PIO *pio, unsigned int mode);
void PIO_KeypadDisableIt(AT91S_PIO *pio, unsigned int mode);
#endif //#ifndef PIO_KEYPAD_H
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