The rp2040 cache isn’t very large (16k) or fancy (2-way set associative) compared to big computers. For instance, there is no way to lock particular bits of code into the cache.
But it does help a lot for “typical” programs. The big shock is the interrupt latency, if you don’t put the isr in ram.
People have seen basic Isrs take 10+us (1250 cycles!). viewtopic.php?p=2031750
But it does help a lot for “typical” programs. The big shock is the interrupt latency, if you don’t put the isr in ram.
People have seen basic Isrs take 10+us (1250 cycles!). viewtopic.php?p=2031750
Statistics: Posted by WestfW — Sun Apr 28, 2024 8:50 am