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Richard A. Healy cdfce0d01b add openocd argument and raspboot device vars		5 years ago
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.cargo	Change to new aarch64-unknown-none-softloat target.	5 years ago
raspi3_boot	Change to new aarch64-unknown-none-softloat target.	5 years ago
src	Streamlining, cleanup, and minor fixes.	6 years ago
Cargo.lock	Update toolchain and bump dependency versions	5 years ago
Cargo.toml	Update toolchain and bump dependency versions	5 years ago
Makefile	add openocd argument and raspboot device vars	5 years ago
README.md	Update README.md	6 years ago
kernel8	Change to new aarch64-unknown-none-softloat target.	5 years ago
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README.md

Tutorial 08 - Hardware Random Number Generator

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.s

Due to lack of documentation, we mimic the respective Linux driver.

Rng::init(&self) initializes the hardware.

Rng::rand(&self, min: u32, max: u32) returns a random number between min and max.

main.rs

Press a key to query a random value and then display it on the serial console.