FPU going too slow
Hi Bernard.
Thank you very much for all these clarifications, I understand much better now! I am gonna do some experimentation with moving some parts to RAM and post the results here (if there are any conclusive results).
About the FLASH_ACR register, I should : set DCRST and ICRST, *then* set the 3 bits to enable prefetching?
Last thing, you said that STM32F411 had 0 wait state at any clock frequency (and I’ve read that on the product page as well). That means that 100 MHz IS indeed the best solution to go fast, right? I don’t have to determine the best clock value given that increasing the clocking speed will not induce any more wait state? This leads me to another question : why would someone run the F411 (or other) slower than 100 MHz if it’s 0 wait state at 100 MHz? My first thought was power consumption, it might make a significant difference... Are there any other criterias?
Thanks a lot for your help,
Florent