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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* ----------------------------------------------------------------------------
* 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 "led.h"
#include <board.h>
#include <pio/pio.h>
//------------------------------------------------------------------------------
// Local Variables
//------------------------------------------------------------------------------
#ifdef PINS_LEDS
static const Pin pinsLeds[] = {PINS_LEDS};
static const unsigned int numLeds = PIO_LISTSIZE(pinsLeds);
#endif
//------------------------------------------------------------------------------
// Global Functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Configures the pin associated with the given LED number. If the LED does
/// not exist on the board, the function does nothing.
/// \param led Number of the LED to configure.
/// \return 1 if the LED exists and has been configured; otherwise 0.
//------------------------------------------------------------------------------
unsigned char LED_Configure(unsigned int led)
{
#ifdef PINS_LEDS
// Check that LED exists
if (led >= numLeds) {
return 0;
}
// Configure LED
return (PIO_Configure(&pinsLeds[led], 1));
#else
return 0;
#endif
}
//------------------------------------------------------------------------------
/// Turns the given LED on if it exists; otherwise does nothing.
/// \param led Number of the LED to turn on.
/// \return 1 if the LED has been turned on; 0 otherwise.
//------------------------------------------------------------------------------
unsigned char LED_Set(unsigned int led)
{
#ifdef PINS_LEDS
// Check if LED exists
if (led >= numLeds) {
return 0;
}
// Turn LED on
if (pinsLeds[led].type == PIO_OUTPUT_0) {
PIO_Set(&pinsLeds[led]);
}
else {
PIO_Clear(&pinsLeds[led]);
}
return 1;
#else
return 0;
#endif
}
//------------------------------------------------------------------------------
/// Turns a LED off.
/// \param led Number of the LED to turn off.
/// \param 1 if the LED has been turned off; 0 otherwise.
//------------------------------------------------------------------------------
unsigned char LED_Clear(unsigned int led)
{
#ifdef PINS_LEDS
// Check if LED exists
if (led >= numLeds) {
return 0;
}
// Turn LED off
if (pinsLeds[led].type == PIO_OUTPUT_0) {
PIO_Clear(&pinsLeds[led]);
}
else {
PIO_Set(&pinsLeds[led]);
}
return 1;
#else
return 0;
#endif
}
//------------------------------------------------------------------------------
/// Toggles the current state of a LED.
/// \param led Number of the LED to toggle.
/// \return 1 if the LED has been toggled; otherwise 0.
//------------------------------------------------------------------------------
unsigned char LED_Toggle(unsigned int led)
{
#ifdef PINS_LEDS
// Check if LED exists
if (led >= numLeds) {
return 0;
}
// Toggle LED
if (PIO_GetOutputDataStatus(&pinsLeds[led])) {
PIO_Clear(&pinsLeds[led]);
}
else {
PIO_Set(&pinsLeds[led]);
}
return 1;
#else
return 0;
#endif
}
|
