can M7 and M4 access flexspi A at the same time

[xjy198903]

In rt1176 board, can M7 and M4 access flexspi A at the same time? Will there be any data anomalies? If not, how to deal with the data synchronization problem

[Masmiseim]

Depends,

you can execute Code from the external Flash (XiP) from both cores simultaneously. The Hardware takes care of the synchronization.

If you like to read/write manually on the interface, then you have to do a synchronization.

[xjy198903]

I want to read/write manually on the interface, how can i do a synchronization? Could you give some advice or examples？

[Masmiseim]

I’m not aware of an out of the box solution.

You could check the MessageBox Unit of the Controller to communicate between the two cores. Or use a shared memory based communication.

[xjy198903]

Hi, Masmiseim
I will try to use sema4 to complete data synchronization, thank you very much