CONFIG_CDC_ACM_IAD

Force using Interface Association Descriptor

Type: bool

Help

IAD should not be required for non-composite CDC ACM device,
but Windows 7 fails to properly enumerate without it.
Enable if you want CDC ACM to work with Windows 7.

Direct dependencies

USB_CDC_ACM && USB_DEVICE_STACK

(Includes any dependencies from ifs and menus.)

Default

  • y

Kconfig definition

At <Zephyr>/subsys/usb/class/Kconfig.cdc:39

Included via <Zephyr>/Kconfig:8<Zephyr>/Kconfig.zephyr:44<Zephyr>/subsys/Kconfig:49<Zephyr>/subsys/usb/Kconfig:160<Zephyr>/subsys/usb/class/Kconfig:6

Menu path: (Top) → Sub Systems and OS Services → USB Device Support → USB CDC ACM Class support → USB CDC ACM Class support

config CDC_ACM_IAD
    bool "Force using Interface Association Descriptor"
    default y
    depends on USB_CDC_ACM && USB_DEVICE_STACK
    help
      IAD should not be required for non-composite CDC ACM device,
      but Windows 7 fails to properly enumerate without it.
      Enable if you want CDC ACM to work with Windows 7.

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