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Introduction

This reference design demonstrates a UART to Ethernet gateway based on ATSAM4S. A UDP broadcast scheme is used for clients to find Ethernet address. Flow control is support to balance the transmission rate between Ethernet and UART. This reference design is implemented with ATSAM4S Xplained Pro and Ethernet1 Xplained Pro.

Key Features

  • Based on ATSAM4S and external Ethernet MAC/PHY
  • Use LwIP stack supporting DHCP, TCP, UDP protocols etc.
  • Up to 15 clients connection in TCP server mode
  • Ethernet data flow control support
  • TCP client/server with keep-alive detection and auto reconnection
  • Multiple UART data package with DMA