Smalles Ethernet (no TCP/IP) implementation, even 10Mbps

On Tue, 22 Jan 2013 00:14:04 -0800 (PST), pozzugno@gmail.com wrote:

>I have to create a small network composed by some nodes.  At the moment, the number of nodes is about 10, but I want to have a flexible architecture that could increase in the future.
>
>I think Ethernet is a very good bus technology that solves many problems to the developer: framing, multi-master, addressing, conflicts, ...
>
>I don't need the full TCP/IP stack that needs high resources.  I just want to send raw Ethernet packets to the bus and receive raw packets from the bus (like for RS485).
>I don't need very high-speed, so it could be sufficient the 10Mbps.  100Mbps could be nice in the future.
>
>What is the smallest and cheapest solution?  A microcontroller with embedded MAC and an external PHY, magnetics and connector, or a microcontroller with an external Ethernet controller (with MAC+PHY integrated), magnetics and connector?

You can use the Wiznet W7200 - ARM32bit Cortex M3 with hardwired
TCP/IP, MAC & PHY.

It takes about 10 lines of C code to setup enough that the device
responds to ping requests.

Regards
  Anton Erasmus

>>>>> Anton Erasmus <nobody@spam.prevent.net> writes:
>>>>> On Tue, 22 Jan 2013 00:14:04 -0800 (PST), pozzugno@gmail.com wrote:

[...]

 >> What is the smallest and cheapest solution?  A microcontroller with
 >> embedded MAC and an external PHY, magnetics and connector, or a
 >> microcontroller with an external Ethernet controller (with MAC+PHY
 >> integrated), magnetics and connector?

 > You can use the Wiznet W7200 - ARM32bit Cortex M3 with hardwired
 > TCP/IP, MAC & PHY.

	I wonder if it is TCP/IPv4-only, or does it support TCP/IPv6,
	too (i. e., "dual-stack")?

	Is there a list of TCP/IPv6 implementations for embedded systems
	somewhere on the Web, BTW?

 > It takes about 10 lines of C code to setup enough that the device
 > responds to ping requests.

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