Tutorial 06 - Hardware Random Number Generator
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This going to be an easy tutorial. We query a number from the (undocumented) hardware random
number generator. You can use this to implement a simple, but accurate dice throw in any game.
It is important as without hardware support you can only generate pseudo-random numbers.

Rand.h, rand.c
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`rand_init()` initializes the hardware.

`rand(min,max)` returns a random number between min and max.

Main
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We query a random value and then we display it on the serial console.