* timer0.h
* We set up timer 0 to give us an interrupt
* every millisecond. Tasks that have to occur
* regularly (every millisecond or few) can be added
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* to the interrupt handler (in timer0.c) or can
* be added to the main event loop that checks the
* clock tick value. This value (32 bits) can be
* obtained using the get_clock_ticks() function.
* (Any tasks undertaken in the interrupt handler
* should be kept short so that we don’t run the
* risk of missing an interrupt in future.)
#ifndef TIMER0_H_
#define TIMER0_H_
#include
/* Set up our timer to give us an interrupt every millisecond
* and update our time reference.
void init_timer0(void);
/* Return the current clock tick value – milliseconds since the timer was
* initialised.
uint32_t get_current_time(void);
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