Hi,
Now I try to use “mailbox” for the communication between Linux on a big core and Arduino on a small core.
I use the program shown at https://milkv.io/ja/docs/duo/getting-started/arduino#mailbox-usage-example on the small core (Arduino).
As a program on the big core (Linux), I use the program shown ar duo-examples: mailbox-test/mailbox_test.c.
However, they appear to contain only data transfer from Linux to Arduino.
How can the big core receive the values sent by the small core via “mailbox”?
Best,