Struct DWT

pub struct DWT { /* private fields */ }

Data Watchpoint and Trace unit

Implementations

impl DWT

pub fn num_comp() -> u8

Number of comparators implemented

A value of zero indicates no comparator support.

pub fn has_exception_trace() -> bool

Returns true if the the implementation supports sampling and exception tracing

pub fn has_external_match() -> bool

Returns true if the implementation includes external match signals

pub fn has_cycle_counter() -> bool

Returns true if the implementation supports a cycle counter

pub fn has_profiling_counter() -> bool

Returns true if the implementation the profiling counters

pub fn enable_cycle_counter(&mut self)

Enables the cycle counter

The global trace enable (DCB::enable_trace) should be set before enabling the cycle counter, the processor may ignore writes to the cycle counter enable if the global trace is disabled (implementation defined behaviour).

pub fn disable_cycle_counter(&mut self)

Disables the cycle counter

pub fn cycle_counter_enabled() -> bool

Returns true if the cycle counter is enabled

pub fn get_cycle_count() -> u32

👎Deprecated since 0.7.4: Use cycle_count which follows the C-GETTER convention

Returns the current clock cycle count

pub fn cycle_count() -> u32

Returns the current clock cycle count

pub fn set_cycle_count(&mut self, count: u32)

Set the cycle count

pub fn unlock()

Removes the software lock on the DWT

Some devices, like the STM32F7, software lock the DWT after a power cycle.

pub fn cpi_count() -> u8

Get the CPI count

Counts additional cycles required to execute multi-cycle instructions, except those recorded by lsu_count, and counts any instruction fetch stalls.

pub fn set_cpi_count(&mut self, count: u8)

Set the CPI count

pub fn exception_count() -> u8

Get the total cycles spent in exception processing

pub fn set_exception_count(&mut self, count: u8)

Set the exception count

pub fn sleep_count() -> u8

Get the total number of cycles that the processor is sleeping

ARM recommends that this counter counts all cycles when the processor is sleeping, regardless of whether a WFI or WFE instruction, or the sleep-on-exit functionality, caused the entry to sleep mode. However, all sleep features are implementation defined and therefore when this counter counts is implementation defined.

pub fn set_sleep_count(&mut self, count: u8)

Set the sleep count

pub fn lsu_count() -> u8

Get the additional cycles required to execute all load or store instructions

pub fn set_lsu_count(&mut self, count: u8)

Set the lsu count

pub fn fold_count() -> u8

Get the folded instruction count

Increments on each instruction that takes 0 cycles.

pub fn set_fold_count(&mut self, count: u8)

Set the folded instruction count

impl DWT

pub const PTR: *const RegisterBlock = {0xe0001000 as *const cortex_m::peripheral::dwt::RegisterBlock}

Pointer to the register block

pub const fn ptr() -> *const RegisterBlock

👎Deprecated since 0.7.5: Use the associated constant PTR instead

Returns a pointer to the register block

Trait Implementations

impl Deref for DWT

type Target = RegisterBlock

The resulting type after dereferencing.

fn deref(&self) -> &<DWT as Deref>::Target

Dereferences the value.

impl Send for DWT