I want to program an API to generate JSON files.
The standard Labview VI "Flatten to Json" has the connector "anything" which I also want to use.
How is that possible?
https://www.ni.com/docs/de-DE/bundle/labview-2020/page/glang/flatten_to_json.html
Use the existing JSONText library found in LV2019 and later. The subVIs therein are malleable VIs that do exactly what you're requesting. If for some reason you don't like how they work, they're open source and editable.
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In Order use a PLC as a Client (formerly “Slave”), one has to configure the PDO channels, since the default values of the manufacturer are often not suitable. In my case, I need the PDOs so send INT valued instead of the default UNSIGNED8 (see. Picture).
Therefore my question: What kind of workflow would you recommend, to map the CANopen Client PDO channels?
I found the following workflow suitable, however I appreciate any improvements and recommendations from your side!
Start by locating the .eds file from the manufacturer. The image show this in the B&R Automation Studio Programming Environment
Open the file in a eds. Editor. I found the free Vector CANEds Editor very useful. Delete all RxPODs and RxPDO mappings that you don’t need.
Assign the needed Data Type (e.g. INTEGER16) and Channel Name (“1 Byte In (1)”).
Add the necessary PDOs and PDO mapping from the database. (This might actually be a bug, but if you just edit the PDOs without deleting and recreating them, I always receive error messages)
Map the Date to the Channels
Don't forget to write the number of channels in the first entry (in this image: 1601sub0)
Check the eds file for Errors (press F5) and copy&paste the eds file to the original location point 1.)
Add the PLC Client device in Automation Studio and you should see the correct mappings.
(PS: I couldn't make the images smaller ... any recommendations about formating this question are welcome!)
While reading trough the documentation i got a hint that it is possible to add source from local media(video/audio) file and stream it using PeerConnection.
But the sentence:
Note that this document describes the use of microphone and camera type sources only, the use of other source types is described in other documents.
So, does does someone has these documents?
Take your pick from https://github.com/w3c/?query=mediacapture
https://w3c.github.io/mediacapture-fromelement/
https://w3c.github.io/mediacapture-depth/
https://w3c.github.io/mediacapture-screen-share/
And of course http://w3c.github.io/webrtc-pc/ can be a source itself.
I am copying my abap/ooabap code into text file.
How do i copy a webdynpro applicaton this way.
I don't want to use transport requests.
I guess this is not possible as with normal programs. If you do not want to use transport requests, the default way is using SAPlink.
Hey Overflow, I have an application which serves as a user interface for a spartan/command line program.
I have the program running on a separate process, and my application monitors it to see if it is responding and how mush CPU it is utilising.
Now I have a list of files in my program (listbox) which are to be sent to the application, which happens fine. But I want to be able to read text from the com-line so as to determine when the first file has been processed.
Com-line says one of "selecting settings", "unsupported format" and "cannot be fixed".
What I want to be able to do is when it says one of these three things, remove item(0) in listbox1.
Is this possible?
I thought of programming an event which handles com_exe.print or something or other, if possible.
Read the standard output from the process.
MSDN Article
Theres an example of synchronous reading from the process in that article.
You might be able to do what you want using the AttachConsole API function as described here. However, maybe an easier alternative would be if you could pipe the output of the command line app to a text file and then your app could just parse the text file (assuming that the command line file wouldn't lock the file completely, I'm not sure about that).
If you don't know how to pipe the output, this page has quite a bit of information.
I'm interested in grabbing the EPG data from DVB-T streams. Does anyone know of any C libraries or an alternative means of getting the data?
tv_grab_dvb can do this. See the subversion repository for sources.
tv_grab_dvb is made to work with the stream grabbed from the DVB-T card using dvbtools on Linux, but it may be portable to other platforms - I think it just works with the raw data from the stream.
...a new answer to an old question:
I wrote a utility called dvbtee that can be used as a c++ library, a cross-platform command line utility, or a node.js module.
(despite it being a c++ library, one could still link to it from c code)
The command line utility will parse your streams and output the EPG, depending on the arguments you specify, it can generate plain text or a JSON block of data.
dvbtee: a digital television streamer / parser / service information aggregator supporting various interfaces including telnet CLI & http control
The node.js module will emit events containing the PSIP table data (along with EPG info)
node-dvbtee: MPEG2 transport stream parser for Node.js with support for television broadcast PSIP tables