forked from RobTillaart/Arduino
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathBoolArray.cpp
More file actions
90 lines (79 loc) · 1.88 KB
/
BoolArray.cpp
File metadata and controls
90 lines (79 loc) · 1.88 KB
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
//
// FILE: BoolArray.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.1.3
// PURPOSE: BoolArray library for Arduino
// URL: http://forum.arduino.cc/index.php?topic=361167
//
// Released to the public domain
//
// 0.1.3 - added toggle
// 0.1.02 - added errorhandling
// 0.1.01 - fixed constructor - Thanks WPD64 + error handling
// 0.1.00 - initial version
//
#include "BoolArray.h"
BoolArray::BoolArray()
{
_ar = NULL;
_size = 0;
}
BoolArray::~BoolArray()
{
if (_ar) free(_ar);
}
uint8_t BoolArray::begin(const uint16_t size)
{
if (size > BOOLARRAY_MAXSIZE) return BOOLARRAY_SIZE_ERROR;
_size = size;
if (_ar) free(_ar);
_ar = (byte*) malloc((_size + 7) / 8);
return BOOLARRAY_OK;
}
uint8_t BoolArray::get(const uint16_t idx)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (idx >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = idx / 8;
uint8_t bi = idx & 7;
uint8_t mask = 1 << bi;
return (_ar[by] & mask) > 0;
}
uint8_t BoolArray::set(const uint16_t idx, const uint8_t value)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (idx >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = idx / 8;
uint8_t bi = idx & 7;
uint8_t mask = 1 << bi;
if (value == 0) _ar[by] &= ~mask;
else _ar[by] |= mask;
return BOOLARRAY_OK;
}
uint8_t BoolArray::toggle(const uint16_t idx)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (idx >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = idx / 8;
uint8_t bi = idx & 7;
uint8_t mask = 1 << bi;
_ar[by] ^= mask;
return BOOLARRAY_OK;
}
uint8_t BoolArray::clear()
{
return setAll(0);
}
uint8_t BoolArray::setAll(const uint8_t value)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
uint8_t *p = _ar;
uint8_t t = (_size + 7) / 8;
uint8_t v = value?255:0;
while(t--)
{
*p++ = v;
}
return BOOLARRAY_OK;
}
// END OF FILE