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 ifs and menus.)

Default¶

BT_L2CAP_TX_BUF_COUNT

Kconfig definition¶

At <Zephyr>/subsys/bluetooth/host/Kconfig.gatt:27

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:34 → <Zephyr>/subsys/Kconfig:9 → <Zephyr>/subsys/bluetooth/Kconfig:239 → <Zephyr>/subsys/bluetooth/host/Kconfig:506

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → ATT and GATT Options

config BT_ATT_TX_MAX
    int "Maximum number of queued outgoing ATT PDUs"
    range 1 BT_L2CAP_TX_BUF_COUNT
    default BT_L2CAP_TX_BUF_COUNT
    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.

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