1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* ----------------------------------------------------------------------------
* 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.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include <board.h>
#include "pio.h"
#include "pio_keypad.h"
//------------------------------------------------------------------------------
// Global Functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Configures keypad controller
/// \param pPIO Pointer to a PIO instance
/// \param config Configuration data for given pin,see head file for detail
//------------------------------------------------------------------------------
void PIO_KeyPadConfig(AT91S_PIO *pPIO, KeyPadConfig *config)
{
//enable/disable keypad controller
pPIO->PIO_KER = config->enable;
//if enable, set keypad matrix and debouncing
if(config->enable == TRUE) {
//set key matrix
pPIO->PIO_KRCR = (config->row | config->col<<8) ;
//set debouncing
pPIO->PIO_KDR = config->debouncing;
}
}
//------------------------------------------------------------------------------
/// Get Key Press/Release status
/// \param pPIO Pointer to a PIO instance
/// \param event Pointer to a instance of KeyEvent for storing keypad status
//------------------------------------------------------------------------------
void PIO_GetKeyStatus(AT91S_PIO *pPIO, KeyEvent *event)
{
int i,j;
//get key press event
event->kdEvent.press = (pPIO->KSR&0x1)?TRUE:FALSE;
event->kdEvent.keyPressNum = (pPIO->KSR>>8)&0x3;
j=event->kdEvent.keyPressNum+1;
for(i=0; i<j; i++) {
event->kdEvent.preKeyMatrix[i].row = ((pPIO->KKPR) >> (8*i)) & 0x7;
event->kdEvent.preKeyMatrix[i].col = ((pPIO->KKPR) >> (8*i+4)) & 0x7;
}
//get key release event
event->kuEvent.release = ((pPIO->KSR>>1) & 0x1)?TRUE:FALSE;
event->kuEvent.keyRelNum = (pPIO->KSR>>16)&0x3;
j=event->kdEvent.keyPressNum+1;
for(i=0;i<j;i++) {
event->kuEvent.relKeyMatrix[i].row = ((pPIO->KKRR) >> (8*i)) & 0x7;
event->kuEvent.relKeyMatrix[i].col = ((pPIO->KKRR) >> (8*i+4)) & 0x7;
}
}
//------------------------------------------------------------------------------
/// Enable keypad interrupt as Key Press Interrupt or Key Release Interrupt or both
/// \param pPIO Pointer to a PIO instance
/// \param mode Select key interrupt mode to enable,
/// 0x1 Key Press Interrupt
/// 0x2 Key Release Interrupt
/// 0x3 both of two type
//------------------------------------------------------------------------------
void PIO_KeypadEnableIt(AT91S_PIO *pPIO, unsigned int 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 Key Press Interrupt or Key Release Interrupt or both of them
/// \param pPIO Pointer to a PIO instance
/// \param mode Select key interrupt mode to disable,
/// 0x1 Key Press Interrupt
/// 0x2 Key Release Interrupt
/// 0x3 both of two type
//------------------------------------------------------------------------------
void PIO_KeypadDisableIt(AT91S_PIO *pPIO, unsigned int 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;
}
}
|
