Struct cortexm4::systick::SysTick

pub struct SysTick {
    regs: &'static Registers,
    hertz: u32,
}

The ARM Cortex-M4 SysTick peripheral

Documented in the Cortex-M4 Devices Generic User Guide, Chapter 4.4 (pagees 249-252)

Fields

regs: &'static Registers

hertz: u32

Methods

impl SysTick

pub unsafe fn new() -> SysTick

Initialize the SysTick with default values

Use this constructor if the core implementation has a pre-calibration value in hardware.

pub unsafe fn new_with_calibration(clock_speed: u32) -> SysTick

Initialize the SysTick with an explicit clock speed

Use this constructor if the core implementation does not have a pre-calibration value.

• clock_speed - the frequency of SysTick tics in Hertz. For example, if the SysTick is driven by the CPU clock, it is simply the CPU speed.

fn hertz(&self) -> u32

Trait Implementations

impl SysTick for SysTick

fn set_timer(&self, us: u32)

Sets the timer as close as possible to the given interval in microseconds.

fn value(&self) -> u32

Returns the time left in microseconds

fn overflowed(&self) -> bool

Returns true if the timer has expired

fn reset(&self)

Resets the timer

fn enable(&self, with_interrupt: bool)

Enables the timer