Hi Markus, On Sat, Mar 31, 2018 at 04:02:05PM -0700, markus wrote: > I looked into moving the stack into the CCM memory of the stm32 > mcu's - and although almost every linker script defines ".data.core" > sections and there are some defines in bsp.h's for section > attributes they don't seem to be used. > > Is there some hidden magic going on or is the CCM reserved for > application code?
No hidden magic; CCM is mostly unused and is up for grabs. I think there was some attempt to use this memory intelligently a while back, but as the number of supported BSPs increased, it became impractical. When you say "the stack", do you mean the interrupt handler stack? That sounds like a reasonable use of CCM (though you and others probably have a better sense of this than I do). If this is something that users will want to do, it might be good to create a syscfg setting to control whether the stack gets put in CCM or normal RAM. Chris
