Function set_feature_function_suspend

src/usb_control.cpp:114–131

  }

  int set_feature_function_suspend(libusb_device_handle *handle, int timeout, bool low_power_suspend, bool function_remote_wake)
  {
    uint8_t suspend_options = 0;
    suspend_options |= low_power_suspend ? 1 : 0;
    suspend_options |= function_remote_wake ? 2 : 0;

    // for details see USB 3.1 r1 spec section 9.4.9

    InterfaceFeatureSelector feature_selector = FUNCTION_SUSPEND;
    uint8_t bmRequestType = FeatureSelectorRecipient<InterfaceFeatureSelector>::get();
    uint8_t bRequest = LIBUSB_REQUEST_SET_FEATURE;
    uint16_t wValue  = static_cast<uint16_t>(feature_selector);
    uint16_t wIndex  = suspend_options << 8 | 0;
    uint16_t wLength = 0;
    uint8_t *data    = 0;

    return libusb_control_transfer(handle, bmRequestType, bRequest, wValue, wIndex, data, wLength, timeout);
  }

  int get_max_iso_packet_size(libusb_device *device, int configuration, int alternate_setting, int endpoint)
  {