12 Jun 2018

Connect embedded systems to LAN or Cloud through USB host interface

SEGGER introduces emUSB-Host LAN that connects any embedded system to a LAN or Internet using nothing more than a spare USB host socket. Using readily available USB to Ethernet adapters, in-field devices without network hardware can be enhanced with network connectivity using SEGGER software.

emUSB-Host LAN supports USB-to-LAN adapters using software plug-ins. SEGGER offers immediate availability of plug-ins for adapters that use ASIX AX88772/A/B chipsets and for any adapter that conforms to the standard CDC-ECM class or Microsoft's RNDIS specification. Smartphone tethering interfaces usually conform to the RNDIS class. With USB tethering, the embedded system can connect to the Internet, for instance through a service technician's mobile phone, wherever a cellular connection exists. Due to the very low memory usage emUSB-Host LAN will run on many microcontrollers without requiring additional external memory.

"With the continuous addition of new classes, our emUSB-Host enables PC-like USB support for embedded systems, while retaining the low memory footprint imposed by typical microcontrollers. Adding support for LAN adapters to our USB host stack enables numerous use cases: whether it is a service technician who can configure and manage an embedded system with just his smartphone and a web browser or an embedded system that can be remotely managed by simply asking the customer to connect it to the Internet", says Dirk Akemann, Marketing Manager at SEGGER.

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