Dynamically turning on/off FPU
Posted: Thu Sep 27, 2018 11:05 pm
Just wondering if anyone has played around with enabling/disabling the FPU on an STM32 on the fly.
AFAICT, currently it is either initialized at boot time, or not, but once on it is on. I was just wondering if an application could feasibly turn it off when not in use, and re-enable it as required. Would it save any appreciable amount of power, compared to being initialized but idle?
Dave
AFAICT, currently it is either initialized at boot time, or not, but once on it is on. I was just wondering if an application could feasibly turn it off when not in use, and re-enable it as required. Would it save any appreciable amount of power, compared to being initialized but idle?
Dave