eCosPro-CDCEEM is eCosCentric's commercial name for the USB peripheral device CYGPKG_DEVS_ETH_USB_CDCEEM package. The package is not included as standard in eCosPro Developer's Kit releases, but is available as a separate add-on package.
The CYGPKG_DEVS_ETH_USB_CDCEEM package implements a USB peripheral device CDC-EEM transport driver. The current implementation makes use of the generic Ethernet driver package CYGPKG_DEVS_ETH_GENERIC_DIRECT to integrate with the lwIP TCP/IP stack.
The CDC-EEM peripheral driver is currently limited to use with the lwIP network stack, and is not available for the BSD network stacks. This is a limitation of the parent CYGPKG_DEVS_ETH_GENERIC_DIRECT package, and not explicitly a limitation of this CDC-EEM peripheral driver.
Normally the eCos lwIP network interface should be configured to use AutoIP, so that a link-local network address is assigned. This ensures that when connected to hosts that do not provide a DHCP daemon, or support for routing to manual or application set network addresses, an automatic connection is still configured.