pub unsafe extern "C" fn flash_flush_cache()Expand description
Flush the entire XIP cache, by issuing an invalidate by set/way maintenance operation to every cache line (Section 4.4.1).
This ensures that flash program/erase operations are visible to subsequent cached XIP reads.
Note that this unpins pinned cache lines, which may interfere with cache-as-SRAM use of the XIP cache.
No other operations are performed.
Supported architectures: ARM-S, RISC-V
ยงSafety
This is a low-level C function. It may be difficult to call safely from Rust. If in doubt, check the rp235x datasheet for details and do your own safety evaluation.