Part Number:OMAP-L138
Hi,
The USB composite device class allows classes that are already defined in the USB library to be combined into a single composite device. Composite dual CDC port is implemented on OMAL138. Two COM ports appear on the host side when the device is connected via USB cable. Our actual requirement is to implement Ethernet over USB along with USB CDC(serial port). One interface should appear as a serial port and the other should be appear as a network adapter when connected to PC. There are mainly 4 protocols for implementing Ethernet over USB: Remote NDIS(RNDIS), Ethernet Control Model(ECM), Ethernet Emulation Model (EEM) and Network Control Model (NCM). Since RNDIS is a Microsoft vendor protocol, they have already written the driver for it, rndismp+usb8023. So if the hardware implements RNDIS protocol, we can use microsoft drivers to communicate with the device. Is there any driver available to implement RNDIS on OMAPl138? Likewise, does Microsoft provide built-in driver if we use other protocols like NCM or ECM.
Any help would be appreciated.
Regards,
Arun