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38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
/*
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* Uuid
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*
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* UUIDs are unique numbers that are used for identifying individual units,
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* functions, programmes, or whatever you want to tag.
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*
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* In this demo, press the Arduino Reset button to generate a new number.
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*
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* UUIDs can be assigned sequentially from allocated blocks of numbers, but
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* they are most powerful when randomly assigned. UUIDs are such big numbers
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* that, for all effective purposes, no two numbers will ever match.
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*
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* UUIDs are particularly useful in web-aware devices, or radio networks.
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*
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* For a discussion of the use of UUIDs, see
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* http://en.wikipedia.org/wiki/Universally_Unique_Identifier
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*
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* For implementation details of UUIDs, see
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* http://tools.ietf.org/html/rfc4122
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*/
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#include "ESP8266TrueRandom.h"
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byte uuidNumber[16]; // UUIDs in binary form are 16 bytes long
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void setup() {
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Serial.begin(9600);
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// Generate a new UUID
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ESP8266TrueRandom.uuid(uuidNumber);
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String uuidStr = ESP8266TrueRandom.uuidToString(uuidNumber);
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Serial.println("The UUID number is " + uuidStr);
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}
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void loop() {
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}
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