Programming STM32H745: shared routine between CM7 and CM4

[iei]

Hi,

Is it possible to run on the M7 core a piece of program (subroutine call - no input, no output parameters) written, compiled and loaded for the M4 core (i.e. to have global access to program code)?

Best

 

[mƎALLEm]

Hello, 

If you need a shared routine between the two cores (just an algorithm): theoretically yes.. But you need to do the test. Refer to the AN4667 / paragraph 1.1:

 

[iei]

Thank you for the answer. 

This is good beginning. The core of the  question was about the following - do M4 and M7 cores share one and the same program memory (common address space) ? And if YES, if for M4 some address is 0x1000, is it the same for M7?

Best reagdrs

[mƎALLEm]

Hello;

The flash memory is shared between the two cores and the flash addresses are seen in the same way.