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https://github.com/RobTillaart/Arduino.git
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115 lines
2.0 KiB
C++
115 lines
2.0 KiB
C++
//
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// FILE: BoolArray.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.8
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// DATE: 2015-12-06
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// PURPOSE: BoolArray library for Arduino
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// URL: https://github.com/RobTillaart/BoolArray
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// http://forum.arduino.cc/index.php?topic=361167
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#include "BoolArray.h"
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BoolArray::BoolArray()
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{
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_array = NULL;
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_size = 0;
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}
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BoolArray::~BoolArray()
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{
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if (_array) free(_array);
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}
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uint8_t BoolArray::begin(const uint16_t size)
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{
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if (size > BOOLARRAY_MAXSIZE) return BOOLARRAY_SIZE_ERROR;
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// do we need to re-allocate?
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if (_size != size)
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{
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_size = size;
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_bytes = (_size + 7) / 8;
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if (_array)
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{
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free(_array);
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}
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_array = (uint8_t *) malloc(_bytes);
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}
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return BOOLARRAY_OK;
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}
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uint16_t BoolArray::size()
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{
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return _size;
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}
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uint8_t BoolArray::memory()
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{
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return _bytes;
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}
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uint8_t BoolArray::setAll(const uint8_t value)
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{
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if (_array == NULL) return BOOLARRAY_INIT_ERROR;
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uint8_t *p = _array;
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uint8_t t = _bytes;
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if (value == 0)
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{
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while(t--) *p++ = 0;
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}
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else
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{
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while(t--) *p++ = 0xFF;
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}
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return BOOLARRAY_OK;
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}
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uint8_t BoolArray::clear()
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{
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return setAll(0);
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}
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uint8_t BoolArray::get(const uint16_t index)
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{
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if (_array == NULL) return BOOLARRAY_INIT_ERROR;
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if (index >= _size) return BOOLARRAY_SIZE_ERROR;
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uint8_t by = index / 8;
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uint8_t bi = index & 7;
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return (_array[by] & _masks[bi]) > 0;
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}
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uint8_t BoolArray::set(const uint16_t index, const uint8_t value)
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{
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if (_array == NULL) return BOOLARRAY_INIT_ERROR;
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if (index >= _size) return BOOLARRAY_SIZE_ERROR;
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uint8_t by = index / 8;
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uint8_t bi = index & 7;
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if (value == 0) _array[by] &= ~_masks[bi];
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else _array[by] |= _masks[bi];
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return BOOLARRAY_OK;
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}
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uint8_t BoolArray::toggle(const uint16_t index)
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{
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if (_array == NULL) return BOOLARRAY_INIT_ERROR;
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if (index >= _size) return BOOLARRAY_SIZE_ERROR;
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uint8_t by = index / 8;
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uint8_t bi = index & 7;
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_array[by] ^= _masks[bi];
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return BOOLARRAY_OK;
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}
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// -- END OF FILE --
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