Help¶

Number of ATT PDUs that can be at a single moment queued for transmission. If the application tries to send more than this amount the calls will block until an existing queued PDU gets sent.

Direct dependencies¶

BT_CONN && BT_HCI_HOST && BT_HCI && BT

(Includes any dependencies from if’s and menus.)

Defaults¶

2 if BT_CONN && BT_HCI_HOST && BT_HCI && BT

Kconfig definition¶

At subsys/bluetooth/host/Kconfig:235

Included via Kconfig:10 → Kconfig.zephyr:35 → subsys/Kconfig:8 → subsys/bluetooth/Kconfig:155

Menu path: (top menu) → Bluetooth

config BT_ATT_TX_MAX
    int
    prompt "Maximum number of queued outgoing ATT PDUs" if BT_CONN && BT_HCI_HOST && BT_HCI && BT
    range 1 BT_L2CAP_TX_BUF_COUNT if BT_CONN && BT_HCI_HOST && BT_HCI && BT
    default 2 if BT_CONN && BT_HCI_HOST && BT_HCI && BT
    depends on BT_CONN && BT_HCI_HOST && BT_HCI && BT
    help
      Number of ATT PDUs that can be at a single moment queued for
      transmission. If the application tries to send more than this
      amount the calls will block until an existing queued PDU gets
      sent.

(Definitions include propagated dependencies, including from if’s and menus.)