Cinterion-BG2-E / "+++" escape sequence problem | Telit Cinterion IoT Developer Community
June 18, 2014 - 5:51pm, 3860 views
Kindly please be informed that i’m using Cinterion-BG2-E. I can connect to GPRS and Connect to server using TCP/IP connection.
I'm using
Transparent TCP/IP client
AT^SISS=0,ADDRESS "ip:port"
ok
AT^SISO=0
OK
^SISW: 0, 1
AT^SIST=0
CONNECT
//
Then send and receive data
//
Now if i need to close the connection after send and receive data from host
I’m using escape
wait 1.2 second
+++
OK
wait 1,5 second
Then close socket command
AT^SISC=0
OK
Socket is closed but unfortunately “+++” is considered as data and it was received at host side as data.
Transmitting "+++" over the air cause a problem to us. Please is there any way to prevent sending it
Thank you
Jun 20 2014 - 7:09pm
Hello,
There is also another possibility to exit from the Transparent mode.
You can do that by toggling the DTR line.
Best Regards,
Grzegorz Rutkowski
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Jun 20 2014 - 11:19pm
Hello,
Thank you. Actually my machine can toggling DTR.
Is there any possibility not to send +++ to exit Data mode?
Thank you
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Jun 23 2014 - 3:08pm
Hi,
There are two ways of leaving data mode. One is sending "+++". But in this case these "+++" will be send as a user data (this is a documented behavior). Second possible solution is to toggle a DTR on the serial interface which is used for data mode.
There are no other possibilities than this.
Walking on water and developing software from a specification are easy - if both are frozen.
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