Create entropy test sketch for random ids
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[submodule "lanternbuildengine"]


path = lanternbuildengine


url = https://gitlab.com/sbrl/lanternbuildengine.git


[submodule "iot/libraries/Entropy"]


path = iot/libraries/Entropy


url = https://github.com/taoyuan/Entropy.git





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 [Battery](https://smile.amazon.co.uk/AnkerPowerCoreAluminumPortableLipstickSizedBlack/dp/B005QI1A8C/)  Size currently unknown  I'll need to run some tests to see how much power it uses to figure out the right battery size.


 [Project box](https://smile.amazon.co.uk/waterproofplasticEnclosurePowerjunctionGrey/dp/B01JHBHNMA/)  if we can't 3D print one


 [TPL5111](https://www.adafruit.com/product/3573)  also available from Pimoroni






## Useful Links


 Entropy extraction from the watchdog timer vs the internal clock: https://github.com/taoyuan/Entropy




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iot/EntropyTest/Entropy.cpp
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../libraries/Entropy/Entropy.cpp

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iot/EntropyTest/Entropy.h
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../libraries/Entropy/Entropy.h

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iot/EntropyTest/EntropyTest.ino
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// Generate_Random_Numbers  This sketch makes use of the Entropy library


// to produce a sequence of random integers and floating point values.


// to demonstrate the use of the entropy library


//


// Copyright 2012 by Walter Anderson


//


// This file is part of Entropy, an Arduino library.


// Entropy is free software: you can redistribute it and/or modify


// it under the terms of the GNU General Public License as published by


// the Free Software Foundation, either version 3 of the License, or


// (at your option) any later version.


//


// Entropy is distributed in the hope that it will be useful,


// but WITHOUT ANY WARRANTY; without even the implied warranty of


// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the


// GNU General Public License for more details.


//


// You should have received a copy of the GNU General Public License


// along with Entropy. If not, see <http://www.gnu.org/licenses/>.


//


// Edited by Starbeamrainbowlabs 2019




#include "Entropy.h"




void setup() {


Serial.begin(9600);




// This routine sets up the watch dog timer with interrupt handler to maintain a


// pool of real entropy for use in sketches. This mechanism is relatively slow


// since it will only produce a little less than two 32bit random values per


// second.


Entropy.initialize();


}




void loop() {


uint32_t random_long;


random_long = Entropy.random();


Serial.println(random_long);


}

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Subproject commit 807c45cfe3e48422559b2aed5bc7de28df15ab3d

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