systick.h

[Stub] support.

Library Documentation

Various system timer definitions.

Defines

SYSTICK_BASE

SysTick register map base pointer.

SYSTICK_CSR_COUNTFLAG

SYSTICK_CSR_CLKSOURCE

SYSTICK_CSR_CLKSOURCE_EXTERNAL

SYSTICK_CSR_CLKSOURCE_CORE

SYSTICK_CSR_TICKINT

SYSTICK_CSR_TICKINT_PEND

SYSTICK_CSR_TICKINT_NO_PEND

SYSTICK_CSR_ENABLE

SYSTICK_CSR_ENABLE_MULTISHOT

SYSTICK_CSR_ENABLE_DISABLED

SYSTICK_CVR_NOREF

SYSTICK_CVR_SKEW

SYSTICK_CVR_TENMS

Functions

uint32 systick_uptime(void )

void systick_init(uint32 reload_val)

Initialize and enable SysTick.

Clocks the system timer with the core clock, turns it on, and enables interrupts.

Parameters:

• reload_val -

  Appropriate reload counter to tick every 1 ms.

void systick_disable()

Clock the system timer with the core clock, but don’t turn it on or enable interrupt.

void systick_enable()

Clock the system timer with the core clock and turn it on; interrupt every 1 ms, for systick_timer_millis.

uint32 systick_get_count(void )

uint32 systick_check_underflow(void )

Variables

uint32 systick_uptime_millis

System elapsed time, in milliseconds.

class systick_reg_map

SysTick register map type.

Public Members

__io uint32 CSR

Control and status register.

__io uint32 RVR

Reload value register.

__io uint32 CNT

Current value register (“count”).

__io uint32 CVR

Calibration value register.