Module icache 

Instruction cache (ICACHE)

ICACHE speeds up instruction fetches from external memories (e.g. OCTOSPI/XSPI-mapped flash) by caching them in a small internal RAM. It has no independent clock gate — it’s always clocked whenever the CPU is — so unlike most other peripherals, Icache::new() does not call rcc::enable_and_reset.

Supported on STM32U5, U3, WBA, H5, L5 and N6. On N6 the cache doesn’t support memory remapping (no CRR registers), so [Icache::enable_remap_region()] and [Icache::disable_remap_region()] aren’t available there — those methods only exist on chips whose ICACHE block has region-remap support.

Structs

Icache

Instruction cache driver.

Enums

Associativity

Cache set-associativity.

Monitor

Which of the two independent hit/miss performance counters to operate on.

Functions

disable_global

Disable the ICACHE without taking the Icache driver.

enable_global

Enable the ICACHE without taking the Icache driver.

invalidate_global

Invalidate the entire ICACHE without taking the Icache driver, blocking until the operation completes. See Icache::invalidate().

is_enabled_global

Whether the ICACHE is currently enabled, without taking the Icache driver.