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as a way of creating accurately timed delays. A simple 'msleep' is implemented by watching the system clock to wait a certain number of milleseconds before it returns. Its a bit more accurate than a for loop, although it really shines when your running multiple threads.
README ------ This example is the same as fancy_blink except that it uses the systick timer to generate time accurate delays. Shows how to set up the systick timer to create an interrupt every millisecond and how to write a delay routine (msleep) that can then delay for a specific number of milliseconds.