TCPIP1940 protocol specification

BenKB Question

Mar 27, 2015 00:00

Hello all,

is there a document describing the protocol being used by TCPIP1940?

I looked to this page https://wiki.analog.com/resources/tools-software/linux-software/sigmatcp, but this is clearly not the same protocol when you compare the source code with what you can see on Wireshark

I have found that the following sequence 1B 00 41 08 00 05 06 01 00 0A 52 02 00 writes to the Core Register (address 0x0A52) the two following bytes 02 00, so it's pretty direct

But when I look to the section in which the code RAM content, the parameter RAM content, etc... are loaded, this becomes absolutely cryptic

For example, the 40 bits instruction 00 00 00 E8 01 does not appear anywhere in the TCP stream, like if it is encrypted (which would sound very strange since you can directly see the bytes sent to Core Register.

Thanks for your help

Benoit

sigma studio

tcp-ip

tcpip1940

ad9140

Report

BenKB Reply

Mar 28, 2015 00:00

After more investigation with a TCP server in debug mode, I have found that the packets are far less cryptic than I thought first (the problem with Wireshark is to find *all* packets containing data... and I missed some, that's why I could not understand first the structure)

However, if anybody knows the exact definition of the header, that would be helpful (I do not like to write code based only on assumptions which may crash if an unpexpected packet is receiving)

Report

EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

Report