Close TCP connection for Direct data flow

Legacy Open AT
1

HI,

  I am using BX3105 module for one of my project. In that, I used AT+KTCPSTART=1 to start direct flow communication with server. After starting this mode I'm not able to use AT commands. So, I need to exit from that mode. But I have tried many way to get out from direct data flow mode after connecting to server, I don't know how to disconnect from server. Only after resetting the module, I can able to use AT commands. Is there any way to disconnect from that direct data flow.

Regards,
Anandkumar T

2

Finally got the answer. Using escapes sequence, we can exit from Direct data mode. By sending “+++” without double codes and without carriage return, it will exit from that mode.

3

Greetings,

how did you exactly exit the data mode, the sequence in the attached picture seems not to work?

image
image753×157 5.74 KB

4

you need to wait some more time before sending +++
maybe wait for 3 seconds.

And after sending +++, you need to also wait until it comes back to AT command mode.

5

Greetings,
thank you for the quick reply!

I had tried a 100 ms delay before the +++ sequence, but obviously that was too short. With 1 second I get an OK reply from the module :+1: