bcm2835_timer.h File Reference

#include <stdint.h>

Include dependency graph for bcm2835_timer.h:

Functions
void	bcm2835_timer_init (uintptr_t mmio_base, void(*callback)())
uint64_t	bcm2835_timer_uptime_microseconds ()

Detailed Description

See also

https://wiki.osdev.org/BCM_System_Timer

Function Documentation

bcm2835_timer_init()

void bcm2835_timer_init	(	uintptr_t	mmio_base,
		void(*)()	callback )

Initializes the BCM2835 system timer (currently, only the timer 1).

Parameters

mmio_base	the MMIO base address to use to get access to the System Timer registers
callback	a function that gets called every time the timer fires an interrupt

bcm2835_timer_uptime_microseconds()

uint64_t bcm2835_timer_uptime_microseconds

(

)

Returns the timer uptime in microseconds.

Returns

the timer uptime in microseconds