BioSemi.nl

Hey all, I am having some trouble with the TCP server. The problem is when I connect to the server to receive the data it never shows that there are channels being sent through. I am using the matlab TCPClient given in the official site. thank you in advance!

Hi,

Do i understand correctly that the Matlab client receives the data normally but Actiview does not show that the matlab client is connected?

Best regards
Biosemi (Gerben)

Hello there! No the problem isn't the connection, ActiView shows the server connects to the client, the problem is when I try to read a tcp block with the call to fread() as follows:
(where words=64*8)

count always returns 0 and I think it is because ActiView is alway showing 0 in the "Channels sent through TCP" bracket. I was wondering whether it was something with the configurations file but I couldn't find any parameter regarding said bracket. Thank you!

Hi,

When the acquisition is not running you can select which channels you want to transmit over the tcp/ip link under the bracket "TCP subset"
How many channels did you select to be transmitted in Actiview?

Best regards
Biosemi (Gerben)

I haven't encountered any selction brackets, is it something to do with the GUI in the TCPclient code? anyway I need all 64 channels(+7 for GSR).

Thanks, Dor.

With the acquisition running you have to press stop (top left) and then select the required channels and press start again. After that you can connect with the matlabclient.
The matlabclient should be configured to 64+7=71 channels.

Best regards
Biosemi (Gerben)

Thank you very much, you helped me a lot!