National Taiwan University of Science and Technology

Hi,

I want to implement event trigger when Data change in c code,

I don't want to set a fix trigger_value, 

does anyone know that how can I use privious data to compare current data?

or any suggestion?

Thanks.

Hello,

I try to test the transmission delay from publish to subscribe,

so I set two parameters,

one is SendTime another is ReceiveTime, use DDS_DomainParticipant_get_current_time,

the SendTime I put in publisher, 

and ReceiveTime I put in publisher,

I get the delay = ReceiveTime - SendTime but it is not correct, 

Is there and suggestions for test transmission delay?

Thanks.

--Kay 

Hello,

I have two questions,

First, I want to use TLS over TCP, do I need to purchase separately?

Second, if I want to use in raspberry pi (publisher) and Linux server (subscriber),

How can I install it in raspberry pi?

Currently, I already publish from raspberry pi and subscribe from the server via TCP.

Hello,

I have a basic question ： How to call C API in code? 

I want to try to " Access received data via a subscriber " and I find these two links:

https://community.rti.com/rti-doc/510/ndds.5.1.0/doc/html/api_c/group__DDSSubscriberExampleModule.html#DDSSubscriberExampleModule_subscriber_setup

Hello,

I have a question for the packages in wireshark.

I only set 7400 port to transfer data, but why we can see in wireshark shows

Server Logical Port Request (7414), Server Logical Port Request (7416), Server Logical Port Request (7418)

and  server logical port error?

I want to put the subscribe data in to parameters in C,

and I already publish data and subscribe it which generate by idl.

For the publisher I can put value by " instance -> uploadtime(myparameter) = 20191106(value)"

Hello,

when I run 

make -f makefile_HelloWorld_armv6vfphLinux3.xgcc4.7.2

I face the problem like this :

/usr/arm-linux-gnueabihf/include/bits/byteswap.h: In function ‘__bswap_32’:
/usr/arm-linux-gnueabihf/include/bits/byteswap.h:45:1: sorry, unimplemented: Thumb-1 hard-float VFP ABI

How can I solve it ?

ENV:

$LD_LIBRARY_PATH = /home/kay/rti_connext_dds-6.0.0/lib/armv6vfphLinux3.xgcc4.7.2

$NDDSHOME =/home/kay/rti_connext_dds-6.0.0

hello,

I try to use Hello_world_tcp with C, in Windows Systems, VS2017

I follow readme:

Windows Systems
---------------

Use rtiddsgen to generate the solution and project files for your
version of Visual Studio. For example, if both the publisher and the
subscriber application will be compiled with Visual Studio 2017,
run rtiddsgen for the i86Win32VS2017 architecture:

Hello,

when I  want to use DDS publish and subscribe with different IP, I find  DISCOVERY mode in the document, but actually I still have no idea to deal with it.

Hello,

I want to implement publish data and store all the data in my Mongo DB,

but it seems only can use SQL DB.

how can I do that by using DDS publisher?  Is there any sample code? 

Thanks