Re: os data.core memory section

Hey Will, thanks for the background - much appreciated. I did indeed need the additional memory to store a time series generated at high frequencies, so offloading wasn't an option. I solved it by storing some of the time series in CCM memory, which is probably the better solution anyway. Given

Re: os data.core memory section

On Mon, Apr 2, 2018, at 4:42 PM, markus wrote: > On Mon, 02 Apr 2018 14:16:54 -0300 > Fabio Utzig wrote: > > > Both > > > > hw/mcu/stm/stm32f7xx/stm32f767.ld > > hw/mcu/stm/stm32f4xx/stm32f407.ld > > > > already define the stack on CCM (called DTCM on the F7xx). Am I > >

Re: os data.core memory section

On Mon, 02 Apr 2018 14:16:54 -0300 Fabio Utzig wrote: > Both > > hw/mcu/stm/stm32f7xx/stm32f767.ld > hw/mcu/stm/stm32f4xx/stm32f407.ld > > already define the stack on CCM (called DTCM on the F7xx). Am I > missing something here? It might be me who's missing something (most

Re: os data.core memory section

Markus: I presume you are referring to these definitions: #define sec_data_core __attribute__((section(".data.core"))) #define sec_bss_core__attribute__((section(".bss.core"))) #define sec_bss_nz_core __attribute__((section(".bss.core.nz"))) As far as I know there is no real magic here

Re: os data.core memory section

Both hw/mcu/stm/stm32f7xx/stm32f767.ld hw/mcu/stm/stm32f4xx/stm32f407.ld already define the stack on CCM (called DTCM on the F7xx). Am I missing something here? On Mon, Apr 2, 2018, at 2:15 PM, Christopher Collins wrote: > Hi Markus, > > On Sat, Mar 31, 2018 at 04:02:05PM -0700, markus wrote:

Re: os data.core memory section

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

os data.core memory section

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