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100 lines (79 loc) · 2.09 KB
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//
// FILE: BoolArray.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.2.3
// PURPOSE: BoolArray library for Arduino
// URL: https://github.com/RobTillaart/BoolArray.git
// http://forum.arduino.cc/index.php?topic=361167
// 0.2.3 2021-01-19 update readme
// 0.2.2 2020-12-15 add arduino-CI + unit tests
// 0.2.1 2020-06-05 Fix library.json
// 0.2.0 2020-03-29 #pragma, readme.md,
// 0.1.4 2017-07-16 added masks for performance
// 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 index)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (index >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = index / 8;
uint8_t bi = index & 7;
return (_ar[by] & masks[bi]) > 0;
}
uint8_t BoolArray::set(const uint16_t index, const uint8_t value)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (index >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = index / 8;
uint8_t bi = index & 7;
if (value == 0) _ar[by] &= ~masks[bi];
else _ar[by] |= masks[bi];
return BOOLARRAY_OK;
}
uint8_t BoolArray::toggle(const uint16_t index)
{
if (_ar == NULL) return BOOLARRAY_INIT_ERROR;
if (index >= _size) return BOOLARRAY_SIZE_ERROR;
uint8_t by = index / 8;
uint8_t bi = index & 7;
_ar[by] ^= masks[bi];
return BOOLARRAY_OK;
}
// 32 bit is even faster,
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;
if (value == 0)
{
while(t--) *p++ = 0;
}
else
{
while(t--) *p++ = 0xFF; // set 16 bits at once
}
return BOOLARRAY_OK;
}
// -- END OF FILE --