Serial Communication with Ethernet

[eqooo]

Hi everyone,
I want to use ethernet communication on my desktop with my pi. I want to learn how to do "ethernet to ethernet communication" . How can I send a data from pc to RPi ? I'm using Debian for RPi.
Thanks.

[joan]

In what sense do you want to send data?

You can use ftp from the command line.

You can use sockets from C.

[eqooo]

I want to create GUI with C# on PC. For example; LED ON and LED OFF butons are on GUI. I want to control leds with GUI applications so I want to try ethernet cable to communicate.

[ghans]

Use Internet Connection Sharing or Bridging under Windows.
On Ubuntu , this only three clicks and works perfectly without
changing anything on the Pi.
After that , you can use HTTP or whatever comes to your mind
over the direct connection.
I do so myself , mostly SSH and telnet though.

ghans

[PiGraham]

Hi everyone,
I want to use ethernet communication on my desktop with my pi. I want to learn how to do "ethernet to ethernet communication" . How can I send a data from pc to RPi ? I'm using Debian for RPi.
Thanks.

Lots of ways to approach this. One is to sens small packets of information using UDP sockets.
UDP is good for small messages and fast delivery, but bad for large transfers and reliable delivery on busy networks.
UDP is more like a serial port connection than STREAM sockets, which are more reliable, are better for large transfers.

This link shows some of the basics in Python, but you could use almost any language :
http://paul.sydfamily.net/index.php?tit ... ython_code

There are lots of programming libraries that have features to support network communication.
UDP and STREAM socket programming is low level. For tasks more complicated than simple messages you will probably be better of using a library.

E.g. Pygame easy networking:
http://pygame-network.readthedocs.org/e ... index.html

You can use netcat to pipe data from one program, over the network and into another program.
http://en.wikipedia.org/wiki/Netcat#Mak ... s_a_server

[eqooo]

Thanks so much your answers.
if I connect to internet , I need to socket programming with TCP/IP or UDP or others.
But I want to say there is no internet. so I want to connect Pc to RPi direct connection wit Ethernet cable.
How can I do?

[ghans]

See my first answer.


ghans

[joan]

Thanks so much your answers.
if I connect to internet , I need to socket programming with TCP/IP or UDP or others.
But I want to say there is no internet. so I want to connect Pc to RPi direct connection wit Ethernet cable.
How can I do?

Connect your Pi and PC via an ethernet cable.

Find your PC's IP address (something like 192.168.x.y). Go to your raspberry Pi and enter the command

sudo ifconfig eth0 192.168.x.z

where z is a number 1 greater than y.

You should then be able to ping between the machines and use ftp etc. From a programming language you should be able to open a socket on the Pi from your PC (and vice versa).

[topguy]

if I connect to internet , I need to socket programming with TCP/IP or UDP or others.
But I want to say there is no internet. so I want to connect Pc to RPi direct connection wit Ethernet cable.
How can I do?

TCP/IP is the protocol to use over internet, it doesnt mean that you NEED the internet to use TCP/IP.

You can send raw ethernet packets to the Pi if you know the MAC address. Example:
https://gist.github.com/austinmarton/1922600

But its more work, so its basicly safer and easier to use TCP/IP and you have so many libraries and guides on the net to help you in any language.