STM32F303VCT6 running ISR from ccmram

[eirik]

Posted on June 18, 2015 at 22:06

Hi, I have been trying to run critical interrupt routines from ccmram with gcc toolchain following the instructions in 

http://www.st.com/web/en/resource/technical/document/application_note/DM00083249.pdfI think I have got the instructions correct, but fail to link the project. Linker emits the following message: section .ccmram loaded at [00000000080017a0,000000000800189f] overlaps section .data loaded at [00000000080017a0,0000000008001c17] #stm32-ccmram

[Tesla DeLorean]

Posted on June 18, 2015 at 22:13

Sounds like an issue with the linker script then... might want to review that.

[eirik]

Posted on June 18, 2015 at 22:16

[eirik]

Posted on June 18, 2015 at 22:18 The original post was too long to process during our migration. Please click on the provided URL to read the original post. https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I6ha&d=%2Fa%2F0X0000000btY%2F.PFMvejScG9jm6Xm6hkDKJy9fcCaoOScw0YqizyXG2c&asPdf=false

[Tesla DeLorean]

Posted on June 18, 2015 at 22:56

Pity there isn't a .ZIP of the files from the App Note provided by ST

They probably changed the .data section

/* Initialized data sections goes into RAM, load LMA copy after code */
.data :
{
. = ALIGN(4);
_sdata = .; /* create a global symbol at data start */
*(.data) /* .data sections */
*(.data*) /* .data* sections */
. = ALIGN(4);
_edata = .; /* define a global symbol at data end */
} >RAM AT> FLASH