Struct DwtProfiler 

pub struct DwtProfiler<const FREQ: u32> { /* private fields */ }

DWT trace unit implementing EmbeddedProfiler.

The frequency of the DWT is encoded using the parameter FREQ.

Implementations

impl<const FREQ: u32> DwtProfiler<FREQ>

pub fn new(dcb: &mut DCB, dwt: DWT, sysclk: u32) -> Self

Enable the DWT and provide a new EmbeddedProfiler.

Note that the sysclk parameter should come from e.g. the HAL’s clock generation function so the real speed and the declared speed can be compared.

Panics

asserts that the compile time constant FREQ matches the runtime provided sysclk

Trait Implementations

impl<const FREQ: u32> EmbeddedProfiler for DwtProfiler<FREQ>

fn read_clock(&self) -> EPInstant

Takes a reading from the clock.

fn log_snapshot(&self, snapshot: &EPSnapshot)

Optionally log the snapshot to some output, like a serial port.

fn at_start(&self)

Optional function that gets called at the start of the snapshot recording.

fn at_end(&self)

Optional function that gets called at the end of the snapshot recording.

fn start_snapshot(&self) -> Instant<u64, 1, 1000000>

takes the starting snapshot of a specific trace.

fn end_snapshot( &self, start: Instant<u64, 1, 1000000>, name: &'static str, ) -> Option<EPSnapshot>

computes the duration of the snapshot given the start time, if there hasn’t been overflow.