(dev, desc, desc_type, desc_index, wIndex = None)
r"""Update an existing descriptor or add a new one.

    dev is the Device object to which the request will be
    sent to.

    The desc parameter is the descriptor to be sent to the device.
    desc_type and desc_index are the descriptor type and index,
    respectively. wIndex index is used for string descriptors
    and represents the Language ID. For other types of descriptors,
    it is zero.
r"""Update an existing descriptor or add a new one.
r Update an existing descriptor or add a new one .
def set_descriptor(dev, desc, desc_type, desc_index, wIndex = None):
    r"""Update an existing descriptor or add a new one.

    dev is the Device object to which the request will be
    sent to.

    The desc parameter is the descriptor to be sent to the device.
    desc_type and desc_index are the descriptor type and index,
    respectively. wIndex index is used for string descriptors
    and represents the Language ID. For other types of descriptors,
    it is zero.
    """
    wValue = desc_index | (desc_type << 8)

    bmRequestType = util.build_request_type(
                        util.CTRL_OUT,
                        util.CTRL_TYPE_STANDARD,
                        util.CTRL_RECIPIENT_DEVICE)

    dev.ctrl_transfer(
        bmRequestType = bmRequestType,
        bRequest = 0x07,
        wValue = wValue,
        wIndex = wIndex,
        data_or_wLength = desc)
def set_descriptor ( dev , desc , desc_type , desc_index , wIndex = None ) : wValue = desc_index | ( desc_type << 8 ) bmRequestType = util . build_request_type ( util . CTRL_OUT , util . CTRL_TYPE_STANDARD , util . CTRL_RECIPIENT_DEVICE ) dev . ctrl_transfer ( bmRequestType = bmRequestType , bRequest = 0x07 , wValue = wValue , wIndex = wIndex , data_or_wLength = desc )