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 subsys/usb/class/Kconfig:46

Included via Kconfig:8Kconfig.zephyr:44subsys/Kconfig:26subsys/usb/Kconfig:132

Menu path: (Top) → USB device stack → USB CDC ACM Device Class Driver

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.)