TCP Client setting domain name instead ip address

Question

I need my DigiconnectME to connect to server in TCP Client mode but the server has dynamic ip so I need to enter in TCP Client settings the domain name (internet address) instead of the ip address.
Is it possible ?

Thanks
Luca

Answer 1

If you either use DHCP or enter DNS settings, you can use the standard gethostbyname() or gethostinfo() calls.

-Erik

Answer 2

sorry, I don't understand.
I comunicate with DigiconnectME throught an external microprocessor by serial comunication, so when DigiconnectMe is in normal mode it works like simple ethernet converter so it's trasparent.
I can access to his internal parameters only when it's in SPI mode but "gethostbyname()" don't seem a SPI command

Answer 3

You will need to do some programming. If you are using some sort of prepackaged firmware, you need to get information on that. I cannot help you on software I have never used.

-Erik

Answer 4

Are you using the Plug and Play firmware? If so, you need the 4MB unit to get hostname resolution capabilities. If you're using a module that was programmed by some 3rd parties software, you need to work with them in order to identify how to do what you're trying to do.

Answer 5

I think so, web server says:

System Information
Model: Digi Connect ME
Ethernet MAC Address: 00:40:9D:3B:45:8A

Firmware Version: 2.8.2 (Version 82001116_K 09/16/2008)
Boot Version: 0.0.0.1 (release_82000866_C)
POST Version: 1.1.3 (release_82000867_H)

CPU Utilization: 4%
Up Time: 5 hours 2 minutes 27 seconds
Total Memory: 8192 KB
Used Memory: 4036 KB
Free Memory: 4156 KB

I buy module with Digi firmware inside, the module doesn't have Jtag connector

Answer 6

Hi Luca,

this is unfortunately not possible. You need to enter an IP address for that field.

Answer 7

how I could fix this?
Would I need firmware customization ?

In my current configuration (plug and play firmware), can I send a ping command to internet address ?

Answer 8

You could do it with custom firmware, yes.

With the plug and play firmware you can ping hostnames, provided you've specified a DNS server. Unfotunately though, the firmware doesn't tolerate host names for the TCP client (homepage -> configuration -> serial port -> tcp client settings).

Answer 9

I don't know that program, is there a way to send data to different ports on IP addresses? If so, it wouldn't be hard to write a resolver from your controlling firmware.

-Erik

Answer 10

kjensen8, I know I can send a ping command manually throught web browser (Administration -> System Information -> Diagnostics) but if I want send ping using microcontroller ?
Maybe there is a SPI command for do this ?