Help¶

This option specifies the total number of asynchronous mailbox messages that can exist simultaneously, across all mailboxes in the system.

Setting this option to 0 disables support for asynchronous mailbox messages.

Default¶

10

Kconfig definition¶

At <Zephyr>/kernel/Kconfig:473

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:30

Menu path: (Top) → General Kernel Options → Other Kernel Object Options

config NUM_MBOX_ASYNC_MSGS
    int "Maximum number of in-flight asynchronous mailbox messages"
    default 10
    help
      This option specifies the total number of asynchronous mailbox
      messages that can exist simultaneously, across all mailboxes
      in the system.

      Setting this option to 0 disables support for asynchronous
      mailbox messages.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)