:orphan:

.. title:: USB_MAX_NUM_TRANSFERS

.. option:: CONFIG_USB_MAX_NUM_TRANSFERS

*Set number of USB transfer data buffers*

Type: ``int``

Help
====

Allocates buffers used for parallel transfers. Increase this number
according to USB devices count.

Direct dependencies
===================

\ :option:`USB_DEVICE_STACK <CONFIG_USB_DEVICE_STACK>`

*(Includes any dependencies from ifs and menus.)*

Default
=======

- 4

Kconfig definition
==================

.. highlight:: kconfig

At ``subsys/usb/Kconfig:59``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:34`` → ``subsys/Kconfig:45``

Menu path: (Top) → Sub Systems and OS Services → USB Device Support

.. parsed-literal::

    config USB_MAX_NUM_TRANSFERS
    	int "Set number of USB transfer data buffers"
    	range 1 32
    	default 4
    	depends on \ :option:`USB_DEVICE_STACK <CONFIG_USB_DEVICE_STACK>`
    	help
    	  Allocates buffers used for parallel transfers. Increase this number
    	  according to USB devices count.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*