AVR®32 AT32UC3 Series Software Library: Basic Web server and TFTP server example.

Introduction

This example implements a basic Web server and a basic TFTP server. It is running on top of the lwIP TCP/IP stack and the AVR32 UC3 freeRTOS.org port.

This example thus contains a port of the lwIP TCP/IP stack. This port is using both the AVR32 UC3 freeRTOS.org port and the AVR32 UC3A MACB interface for the Ethernet access.

lwIP TCP/IP stack

lwIP is an implementation of the TCP/IP protocol suite. The focus of the lwIP TCP/IP implementation is to reduce resource usage while still having a full scale TCP.

lwIP features:

IP (Internet Protocol) including packet forwarding over multiple network interfaces

ICMP (Internet Control Message Protocol) for network maintenance and debugging

UDP (User Datagram Protocol) including experimental UDP-lite extensions

TCP (Transmission Control Protocol) with congestion control, RTT estimation and fast recovery/fast retransmit

Specialized raw API for enhanced performance

Optional Berkeley-alike socket API

DHCP (Dynamic Host Configuration Protocol)

PPP (Point-to-Point Protocol)

ARP (Address Resolution Protocol) for Ethernet

Demo description: Every time a connection is made and data is received, a dynamic page that shows the current FreeRTOS.org kernel statistics is generated and returned. The connection is then closed.

Note: The WEB server is reachable at the IP address 192.168.0.2.

The Basic TFTP server

Implements a simplistic TFTP server.

Demo description:

To put a file onto the TFTP server (Supported file size < 2048 bytes), on a PC command line type tftp 192.168.0.2 PUT "a_file": this will copy a_file from your hard drive to a RAM buffer of the demo.

To get a file from the TFTP server, on a PC command line type tftp 192.168.0.2 GET "a_file": this will copy a_file from the RAM buffer of the application to the PC's hard drive.

Note 1: only one file at a time is supported on this TFTP server. This is because the TFTP server being a simplistic example, it does not use a file system to store files but a predefined RAM area of 2048 Bytes.

Note 2: The TFTP server is reachable at the IP address 192.168.0.2.

Device Info

All AVR32 UC3A devices with a MACB module can be used. This example has been tested with the following setup(s):

AT32UC3A0512 on the EVK1100 evaluation kit.

Contact Info

For more info about Atmel AVR32 visit Atmel AVR32
AVR32 Application Notes
Support mail: avr32@atmel.com

License

Copyright (c) 2007, Atmel Corporation All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
The name of ATMEL may not be used to endorse or promote products derived from this software without specific prior written permission.

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