Struct DWT
pub struct DWT {
_marker: PhantomData<*const ()>,
}Expand description
Data Watchpoint and Trace unit
Fields§
§_marker: PhantomData<*const ()>Implementations§
§impl DWT
impl DWT
pub fn num_comp() -> u8
pub fn num_comp() -> u8
Number of comparators implemented
A value of zero indicates no comparator support.
pub fn has_exception_trace() -> bool
pub fn has_exception_trace() -> bool
Returns true if the the implementation supports sampling and exception tracing
pub fn has_external_match() -> bool
pub fn has_external_match() -> bool
Returns true if the implementation includes external match signals
pub fn has_cycle_counter() -> bool
pub fn has_cycle_counter() -> bool
Returns true if the implementation supports a cycle counter
pub fn has_profiling_counter() -> bool
pub fn has_profiling_counter() -> bool
Returns true if the implementation the profiling counters
pub fn enable_cycle_counter(&mut self)
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)
pub fn disable_cycle_counter(&mut self)
Disables the cycle counter
pub fn cycle_counter_enabled() -> bool
pub fn cycle_counter_enabled() -> bool
Returns true if the cycle counter is enabled
pub fn get_cycle_count() -> u32
cycle_count which follows the C-GETTER convention
pub fn get_cycle_count() -> u32
cycle_count which follows the C-GETTER conventionReturns the current clock cycle count
pub fn cycle_count() -> u32
pub fn cycle_count() -> u32
Returns the current clock cycle count
pub fn set_cycle_count(&mut self, count: u32)
pub fn set_cycle_count(&mut self, count: u32)
Set the cycle count
pub fn unlock()
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
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)
pub fn set_cpi_count(&mut self, count: u8)
Set the CPI count
pub fn exception_count() -> u8
pub fn exception_count() -> u8
Get the total cycles spent in exception processing
pub fn set_exception_count(&mut self, count: u8)
pub fn set_exception_count(&mut self, count: u8)
Set the exception count
pub fn sleep_count() -> u8
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)
pub fn set_sleep_count(&mut self, count: u8)
Set the sleep count
pub fn lsu_count() -> u8
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)
pub fn set_lsu_count(&mut self, count: u8)
Set the lsu count
pub fn fold_count() -> u8
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)
pub fn set_fold_count(&mut self, count: u8)
Set the folded instruction count