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SAMV71Q21 FPU Issue

Posted: Wed Apr 15, 2015 1:34 am
by hassen
Hello, i wanted to activate the FPU on the samV71Q21 evaluation kit with keil ┬Ávision V5.13. So in the option target in keil,in "floating point hardware" field i put "use single precision",the FPU doesn't work. the CPU goes in usage fault handler.
How i can fix this issue, thnx. :wink:

Re: SAMV71Q21 FPU Issue

Posted: Mon Sep 07, 2015 9:41 am
by Turboman
I've used the FPU successfully on the xplained ultra, in Atmel Studio. I used the enableFPU() function -there may be an underscore / different spelling, but that enables the FPU.

Also, the FPU on this core is double precision, not single, so you may be causing a problem there. I haven't tried this board on keil yet. Try selecting double precision maybe?