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77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
#pragma once
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//
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// FILE: UUID.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.5
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// DATE: 2022-06-14
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// PURPOSE: Arduino Library for generating UUID's
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// URL: https://github.com/RobTillaart/UUID
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// https://en.wikipedia.org/wiki/Universally_unique_identifier
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//
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// e.g. 20d24650-d900-e34f-de49-8964ab3eb46d
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#include "Arduino.h"
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#include "Printable.h"
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#define UUID_LIB_VERSION (F("0.1.5"))
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// TODO an enum?
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const uint8_t UUID_MODE_VARIANT4 = 0;
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const uint8_t UUID_MODE_RANDOM = 1;
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/////////////////////////////////////////////////
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//
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// CLASS VERSION
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//
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class UUID : public Printable
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{
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public:
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UUID();
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// at least one seed value is mandatory, two is better.
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void seed(uint32_t s1, uint32_t s2 = 0);
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// generate a new UUID
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void generate();
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// make a UUID string
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char * toCharArray();
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// MODE
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void setVariant4Mode();
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void setRandomMode();
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uint8_t getMode();
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// Printable interface
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size_t printTo(Print& p) const;
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// CASE
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// (experimental code, not tested yet)
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// lower case is default and according to spec.
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// upper case is an additional feature.
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// must it be done at generation or at toCharArray() ?
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// fast or flex
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//
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// void setLowerCase();
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// void setUpperCase();
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private:
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// Marsaglia 'constants' + function
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uint32_t _m_w = 1;
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uint32_t _m_z = 2;
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uint32_t _random();
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// UUID in string format
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char _buffer[37];
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uint8_t _mode = UUID_MODE_VARIANT4;
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// bool _upperCase = false;
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};
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// -- END OF FILE --
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