Programming STM32H745: shared routine between CM7 and CM4

iei · ‎2024-03-20

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

SofLit · ‎2024-03-20

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:

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SofLit · ‎2024-03-20

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:

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

iei · ‎2024-03-20

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

SofLit · ‎2024-03-21

Hello;

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

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iei · ‎2024-03-22

Thank you!

After experiments I'll post the feedback.