Streaming data to an FPGA

Hello All,
I wish to send data from an array (approx 1.6 million values) to an FPGA Sub VI at a rate of 100Hz. Can anyone suggest how i can go about doing it?
The target is on a 7831R board and I am using Labview 8.0. I came across DMA examples but they are all for reading data from the FPGA and not the other way.
Any help will be appreciated.
Regards,
Shailesh.

Hello Shailesh,
Although I haven't done this in any application, I would think you could just create a DMA FIFO and make it type 'Host to Target - DMA' instead of the 'Target to Host - DMA' type that you probably saw in the examples. That is the DMA FIFO I have used in the past, but I can go into a project and create this type of FIFO and can then read the FIFO in in my FPGA code. I would then just write to that FIFO in my Host app with a timed loop at the specified rate. I am using 8.5, but I do not think that should matter. However, I could be wrong on that one. Let me know if this helps at all.
Regards,
John

Similar Messages

Streaming Data between Smart Camera and FPGA?

Is there a way I can stream data between a smart camera (NI 1774) and a FlexRIO FPGA module (PXIe-7961R)? I understand that data from the smart camera can only come from a USB or an Ethernet connection, I intend to plug the camera to the PXI controller (PXIe-8135), the chassis I'm using is PXIe-1082 so the p2p data transfer at 8GB/s should be possible between the controller and the FPGA module.
As a note: The processing I'm trying to do is too computationally intensive so its not possible to do it on the smart camera itself.

Hi faisalm88,
This is Emi from NI.
Unfortunately there is no direct streaming between smart camera and FlexRIO FPGA.
(It has to be smart camera -> controller --> FlexRIO FPGA board)
And thus I have a few suggestion for you.
If you can tell me what's your application (does it have to be smart camera? Is the "data" you are talking about image?) ,
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1. Do not use smart camera.
The iamge quality of 1774 can be easily replaced with USB web cam.
You can connect the web cam to your PXI controller and transfer data to your FPGA board.
If you are using LabVIEW 2014 and newer, there is function to transfer image data to FPGA.
2. Do not use 8135
Assuming if you are using FlexRIO just to enhance image processing performance,
then if might be better to use CVS
http://sine.ni.com/nips/cds/view/p/lang/ja/nid/212667
It has both FPGA and quadcore processor.
3. Stream image data&colon; 1774 --> 8135 --> 7961R
Let me know what method you want to take
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Emi
Emi Nakayama
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Acquiring data in LabVIEW FPGA

Hello,
I am working on LabVIEW FPGA where I have to acquire data from a source and take its average. One way to do that is to keep adding every new signal to the sum f the older ones and then average.
However, I wish to store all the incoming values into a file and save it. But when I tried doing so, it gives an error saying "array size cannot be changed". With this constraint, I am unable to write the data into an array.
Please suggest.
Thank you.
Dheeraj Bharadwaj
IIT-Madras
Solved!
Go to Solution.

You need to acquire data, pass it to the RT, then log there. You cannot use build array on the FPGA because FPGA will not allow for dynamically allocating memory like this. You must preallocate the array then use replace array subset. A better way is to use DMA FIFOs. Have a look at the FPGA examples in LabVIEW for streaming data. Then, on the RT, you can just add in your file logging functions.
CLA, LabVIEW Versions 2010-2013

How to download a table of data to the FPGA

I m using an PCI7813R FPGA board and I'm trying to download a table of data into the FPGA. How can I do this as fast as possible and so I can easily index each data row in the fpga. The length of the table can be variable from run to run. A block of memory where in I could write from the host would be the best solution I think, but I don't think this is possible.
Does anyone have some ideas about doing this?

Hi esrgb,
As you probably noticed, it's not possible to use a table in LabVIEW FPGA. Therefore you will have to go through an array. Keep the following in mind however when using an array:
http://digital.ni.com/public.nsf/websearch/80C9808E454DCBC286257093005B9EB6?OpenDocument
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http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=BE211EB859136066E034080020E74861&p_node=201268&p_source=External
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http://zone.ni.com/devzone/conceptd.nsf/webmain/2bf2813a4beb80c38625700b007da74a
Kind Regards,
Wouter Van Hoof
National Instruments

Stream data from a subvi to the main vi

Hi
I’m wondering if someone can help me. I’m trying to stream data from a sub vi to the main vi without opening and closing the sub vi continuously. The data also needs to be extracted from a while loop within the sub vi. background info: The sub vi controls a photomultipler tube, which once it is on it is best kept on. The PMT signal is generated in while loop of the sub vi. Attached are some basic vis showing what I’m trying to do.
Thanks
Attachments:
Main page.vi ‏11 KB
test2.vi ‏13 KB

If you are streaming measurements continously I would consider using a circular buffer instead of the queued producer/consumer approach.
Check out this implementataion of such a buffer, use only this if your DAQ device does not have an internal circular buffer.
https://decibel.ni.com/content/docs/DOC-20403
Alternatively if you are using a DAQmx device, consider using the device buffer for sharing DAQ data between loops.
Br,
/Roger

Stream data from a subvi to the main vi - path refnum

hello everyone
sorry my english
http://forums.ni.com/t5/LabVIEW/stream-data-from-a-subvi-to-the-main-vi/m-p/2205150/highlight/true#M...
- refnum boolean worked
- refnum graph worked
- refnum numeric worked
how to create a path refnum? stream data from a subvi to the main vi
where do I start?
thank
Solved!
Go to Solution.

Bom Dia Saille,
Eu acredito que o que você tenha hoje seja isso aqui (Desenho bem simplificado):
Hoje o que você tem é o Aplicativo do Medidor + USB Driver controlando o seu medidor. Basicamente, sua aplciação está dividida em três camadas:
Aplicação - Onde estão as funcionalidades principais do programa (interface com o usuário, apresentação de dados, geração de arquivos, etc.)
VISA - Uma arquitetura de Software para controle de instrumentos. Basicamente, ele se comunica com o Driver USB para poder enviar e receber pacotes de dados através do barramento USB.
Device Driver - Intruções de SW de baixo nível para controlar um periférico através de um barramento.
No desenho, eu aponto duas camadas onde você pode tentar atuar para automatizar suas medições:
Aplicação - Você pode usar o VI Server para controlar o Aplicativo do Medidor (Se este aplicativo tiver sido desenvolvido em LabVIEW, o que eu suponho ser verdade). No entanto é necessário saber se o desenvolvedor do produto permitiu isso (Veja Using VI Server to Pass Data Between a VI and a LabVIEW Executable). Outra alternativa é conversar com o fabricante para ver se ele desenvolveu alguma API (Application Programming Interface) para que você consiga controlar o instrumento diretamente.
VISA - O LabVIEW Fornece uma API chamada NI-VISA para poder enviar e receber informações através de diversos barramentos (Veja Serial Instrument Control Tutorial)
É possível acessar o Driver diretamente também, mas eu não recomendo. O resultado não compensa o esfroço!
Espero ter esclarecido suas dúvidas e espero que você tenha sucesso na sua aplicação!!
Atenciosamente.
Felipe Flores
Engenharia de Aplicações
National Instruments Brasil

Streaming data to LONG columns in Oracle 7.3.2.3.0

I am trying to stream data to a LONG column. I'm using Oracle
Server 7.3.2.3.0 on AIX and JDBC driver 8.0.4 on Windows NT 4
SP5.
I include sample tables/programs at the end, but here's the
summary of what's happening:
I'm creating a byte array of length 2500. If I use
setAsciiStream I get the following exception when I execute the
prepared statement:
java.sql.SQLException: Data size bigger than max size for this
type
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java)
at oracle.jdbc.ttc7.TTCItem.setArrayData(TTCItem.java)
at oracle.jdbc.driver.OraclePreparedStatement.setItem
(OraclePreparedStat
ement.java)
at
oracle.jdbc.driver.OraclePreparedStatement.setAsciiStream
(OraclePrepa
redStatement.java)
at TestOracle.main(TestOracle.java:26)
If I use setBinaryStream I get this exception:
java.sql.SQLException: ORA-01461: can bind a LONG value only for
insert into a LONG column
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7
(TTC7Protocol.java)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch
(TTC7Protocol.java)
at oracle.jdbc.driver.OracleStatement.doExecuteOther
(OracleStatement.jav
a)
at oracle.jdbc.driver.OracleStatement.doExecuteWithBatch
(OracleStatement
.java)
at oracle.jdbc.driver.OracleStatement.doExecute
(OracleStatement.java)
at
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout
(OracleStateme
nt.java)
at
oracle.jdbc.driver.OraclePreparedStatement.executeUpdate
(OraclePrepar
edStatement.java)
at oracle.jdbc.driver.OraclePreparedStatement.execute
(OraclePreparedStat
ement.java)
at TestOracle.main(TestOracle.java:27)
My Oracle7 manual states that LONG columns can store 2GB of text.
I tried the above with LONG RAW columns and it worked fine.
Can anyone explain why I get this error? I've tried it with
different sizes and when the data is <2000 bytes it works fine
for LONG columns.
My table is simple:
create table TestLongs (key INTEGER PRIMARY KEY, data LONG);
My Java code is also very simple:
public class TestOracle
public static void main(String[] args)
Connection con = null;
PreparedStatement pstmt = null;
try
Class.forName("oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection(
"jdbc:oracle:thin:@itchy:1526:test",
"System", "<OMITTED>");
byte[] data = new byte[2500];
for (int i=0; i< 2500; i++)
data[i] = 53;
String sql = "INSERT INTO TestLongs (key, data)
VALUES(1, ?)";
pstmt = con.prepareStatement(sql);
ByteArrayInputStream bis = new ByteArrayInputStream
(data);
pstmt.setAsciiStream(1, bis, data.length);
pstmt.execute();
catch (SQLException e)
System.err.println("An error occurred with the
database: " + e);
e.printStackTrace();
catch (Exception e)
System.err.println("Oracle JDBC driver not found." +
e);
e.printStackTrace();
finally
try
if (pstmt != null)
pstmt.close();
if (con != null)
con.close();
catch (SQLException e)
System.err.println("Unable to close
statement/connection.");
null

Robert Greig (guest) wrote:
: I am trying to stream data to a LONG column. I'm using Oracle
: Server 7.3.2.3.0 on AIX and JDBC driver 8.0.4 on Windows NT 4
: SP5.
I tried it with the old 7.3.x JDBC driver and it works fine. I
also noticed after further testing that it sometimes worked
with the 8.0.4 driver. Looks like a bug in the 8.0.4 driver or
some wacky incompatibility.
null

How to stream data from TDS3000?

Hi there,
I would like to stream data from my scope into Labview for further analysis.
Hardware: Tektronix TDS3014C
Software: Labview SignalExpress 2.5.1 + Tektronix Extensions
I don't exactly know when the interesting transient signal appears, therefore I would like to save ~5-10 s of streamed data.
Right now I'm getting just fractions of 2 us and the scope switches into waiting for trigger.
Is there a way to deactivate trigger, or a keyword I could search for?
Thanks for your help,
nook
Solved!
Go to Solution.

muks,
I think you got this post confused with another.
nook,
You can rarely continuously stream data from a GPIB scope. You can check the manual but often the scope cannot transmit at the same time it is acquiring so you have a sequential operation of wait, trigger, acquire, transfer, repeat.
Can't you set the trigger for the transient?

Using TDM VI in Lv 7.1 to stream data to disk

I found the TDM VI and the structure of the data is very interesting for my application.
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Phénix Industries s.a.

Hi,
The LabVIEW Storage VIs do not yet support streaming data to disk. However, you can benefit from the storage VIs structured approach to saving data by:
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Reading data back in and writing it back out to disk using the storage VIs after acquisition
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Regards.
JorisV

ABAP PROGRAM " Streaming DATA " is not working in SAP ITS 6.20

dear all,
i try create application on abap ( WAS 6.20 ) the concept application is real time streaming data . on SAP Gui the application is working properly,
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Hi Echo,
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Virtex6:Configuration data download to FPGA was not successful. DONE did not go high, please check your configuration setup and mode settings

Hello，everyone.
I am using virtex6 FPGA and trying to download mcs file to PROM and have failed.
I download .bit file to FPGA and succeed.
When i try to download .mcs file to PROM XCF128X-FTG64C(BPI Flash) and choose Slave SelectMAP Mode
and the process is about 68% it fails.
The message below the IMapct is as belows:
done.
PROGRESS_END - End Operation.
Elapsed time =      0 sec.
// *** BATCH CMD : identifyMPM
// *** BATCH CMD : assignFile -p 1 -file "C:/Users/Administrator/Desktop/TEST/LED/led.bit"
'1': Loading file 'C:/Users/Administrator/Desktop/TEST/LED/led.bit' ...
done.
INFO:iMPACT:2257 - Startup Clock has been changed to 'JtagClk' in the bitstream stored in memory,
but the original bitstream file remains unchanged.
UserID read from the bitstream file = 0xFFFFFFFF.
INFO:iMPACT:501 - '1': Added Device xc6vlx240t successfully.
INFO:iMPACT - Current time: 2014/3/13 8:48:14
// *** BATCH CMD : Program -p 1
PROGRESS_START - Starting Operation.
Maximum TCK operating frequency for this device chain: 66000000.
Validating chain...
Boundary-scan chain validated successfully.
INFO:iMPACT - 1: Over-temperature condition detected! [ 230.52C > 120.00C]
1: Device Temperature: Current Reading: 230.52 C, Max. Reading: 230.52 C
1: VCCINT Supply: Current Reading:   2.997 V, Max. Reading:   2.997 V
1: VCCAUX Supply: Current Reading:   2.997 V, Max. Reading:   2.997 V
'1': Programming device...
Match_cycle = NoWait.
Match cycle: NoWait
LCK_cycle = NoWait.
LCK cycle: NoWait
done.
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0011 1111 0111 1110 0100 1011 1100 0000
INFO:iMPACT:579 - '1': Completed downloading bit file to device.
INFO:iMPACT:188 - '1': Programming completed successfully.
Match_cycle = NoWait.
Match cycle: NoWait
LCK_cycle = NoWait.
LCK cycle: NoWait
INFO:iMPACT - '1': Checking done pin....done.
'1': Programmed successfully.
PROGRESS_END - End Operation.
Elapsed time =     23 sec.
Selected part: XCF128X
// *** BATCH CMD : attachflash -position 1 -bpi "XCF128X"
// *** BATCH CMD : assignfiletoattachedflash -position 1 -file "C:/Users/Administrator/Desktop/TEST/LED/leda.mcs"
INFO:iMPACT - Current time: 2014/3/13 8:49:32
// *** BATCH CMD : Program -p 1 -dataWidth 16 -rs1 NONE -rs0 NONE -bpionly -e -v -loadfpga
PROGRESS_START - Starting Operation.
Maximum TCK operating frequency for this device chain: 66000000.
Validating chain...
Boundary-scan chain validated successfully.
INFO:iMPACT - 1: Over-temperature condition detected! [ 230.52C > 120.00C]
1: Device Temperature: Current Reading: 230.52 C, Max. Reading: 230.52 C
1: VCCINT Supply: Current Reading:   2.997 V, Max. Reading:   2.997 V
1: VCCAUX Supply: Current Reading:   2.997 V, Max. Reading:   2.997 V
'1': BPI access core not detected. BPI access core will be downloaded to the device to enable operations.
INFO:iMPACT - Downloading core file D:/Xilinx/14.3/ISE_DS/ISE/virtex6/data/xc6vlx240t_jbpi.cor.
'1': Downloading core...
Match_cycle = NoWait.
Match cycle: NoWait
LCK_cycle = NoWait.
LCK cycle: NoWait
done.
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0011 1111 0111 1110 0100 1011 1100 0000
INFO:iMPACT:2492 - '1': Completed downloading core to device.
Current cable speed is set to 6.000 Mhz.
Cable speed is default to 3Mhz or lower for BPI operations.
Current cable speed is set to 3.000 Mhz.
Setting Flash Control Pins ...
Setting Configuration Register ...
Populating BPI common flash interface ...
Common Flash Interface Information Query completed successfully.
INFO:iMPACT - Common Flash Interface Information from Device:
INFO:iMPACT - Verification string: 51 52 59
INFO:iMPACT - Manufacturer ID:        49
INFO:iMPACT - Vendor ID:             01
INFO:iMPACT - Device Code:           18
Setting Flash Control Pins ...
Using x16 mode ...
Setting Flash Control Pins ...
Setting Configuration Register ...
'1': Erasing device...
'1': Start address = 0x00000000, End address = 0x008CE03B.
done.
'1': Erasure completed successfully.
Setting Flash Control Pins ...
Using x16 mode ...
Setting Flash Control Pins ...
Setting Configuration Register ...
INFO:iMPACT - Using Word Programming.
'1': Programming Flash.
done.
Setting Flash Control Pins ...
'1': Flash Programming completed successfully.
Using x16 mode ...
Setting Flash Control Pins ...
Setting Configuration Register ...
'1': Reading device contents...
done.
'1': Verification completed.
Setting Flash Control Pins ...
Current cable speed is resumed to 6.000 Mhz.
'1': Configuration data download to FPGA was not successful. DONE did not go high, please check your configuration setup and mode settings.
`Elapsed time =    814 sec.
and i find many people have met the same thing. But they are spartan series FPGA and i try to low the Resistances of Mode pins,M0 M1 and M2, but the problem does not been solved.
I have read the status Registers and find there is an over-temperature state
and in Impact i could not readback the registers. It is strange.
I am anxious about this problem and have not solved it yet
What reasons may it be?
Hope for your answer, thank you

Hi~I want to know if you solve the configuration problem for virtex-6?
As I encounter the  same configuration problem, I want to consult  you with some question.
Can I have your email?
gszakacs wrote:
I have measured the VCCINT and find it is 1.0V, not 2.997V;
That is not at all surprising. I always assumed the problem is with reading the XADC (system monitor) block and not with the voltage or temperature.
my Reference board is ML605
That would have been nice to know at the beginning...
It seems that you have selected the correct mode, assuming your jumpers are set as required in the ML605 Hardware User's Guide. See table 1-27, table 1-33 and the note below it about switch S1.
I'm not that familiar with the details of this reference design, but it may be that the slave SelectMap circuitry requires a reset or power cycle to actually configure the FPGA. Have you tried power-cycling to see if the FPGA boots from the flash?
I'd also suggest that you select the V6 in the JTAG chain view, then go to the debug menu of Impact and select Read Device Status (this is from memory, but it's something like that). That will not only show the bits of the configuration status register, but also describe what each bit means. Among other things you can check the state of the FPGA's configuration logic and the Mode pins.

Develop streaming data processing applications in C# with Stream Computing Platform and Storm in HDInsight. Can this be done with Visual Studio Community sign up?

Hello,
I am a student and love the Visual Studio Community 2013 to implement some of my research projects. I am currently working on a project that involves streaming data analysis. I found this article ( http://azure.microsoft.com/en-us/documentation/articles/hdinsight-hadoop-storm-scpdotnet-csharp-develop-streaming-data-processing-application/
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Hi,
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Configuration data download to FPGA was not successful.

I have designed a board with the Spartan 6 LX9 TQFP144 Package.
I am able to load a bitstream to the device with the digilent HS-2. However the fpga can not selfconfigure from
the attached SPI Flash.
Here is the console output from iMPACT:
GUI --- Auto connect to cable...
INFO:iMPACT - Digilent Plugin: Plugin Version: 2.4.4
INFO:iMPACT - Digilent Plugin: found 1 device(s).
INFO:iMPACT - Digilent Plugin: opening device: "JtagHs2", SN:210249983579
INFO:iMPACT - Digilent Plugin: User Name: JtagHs2
INFO:iMPACT - Digilent Plugin: Product Name: Digilent JTAG-HS2
INFO:iMPACT - Digilent Plugin: Serial Number: 210249983579
INFO:iMPACT - Digilent Plugin: Product ID: 30900152
INFO:iMPACT - Digilent Plugin: Firmware Version: 0109
INFO:iMPACT - Digilent Plugin: JTAG Port Number: 0
INFO:iMPACT - Digilent Plugin: JTAG Clock Frequency: 10000000 Hz
Attempting to identify devices in the boundary-scan chain configuration...
INFO:iMPACT - Current time: 27.07.2015 16:19:26
PROGRESS_START - Starting Operation.
Identifying chain contents...'0': : Manufacturer's ID = Xilinx xc6slx9, Version : 2
INFO:iMPACT:1777 -
Reading C:/Xilinx/ISE/14.7/ISE_DS/ISE/spartan6/data/xc6slx9.bsd...
INFO:iMPACT:501 - '1': Added Device xc6slx9 successfully.
done.
PROGRESS_END - End Operation.
Elapsed time = 0 sec.
Selected part: N25Q128
Unprotect sectors: FALSE
INFO:iMPACT - Current time: 27.07.2015 16:20:19
PROGRESS_START - Starting Operation.
Maximum TCK operating frequency for this device chain: 25000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': SPI access core not detected. SPI access core will be downloaded to the device to enable operations.
INFO:iMPACT - Downloading core file C:/Xilinx/ISE/14.7/ISE_DS/ISE/spartan6/data/xc6slx9_spi.cor.
'1': Downloading core...
LCK_cycle = NoWait.
LCK cycle: NoWait
done.
'1': Reading status register contents...
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0011 1100 1110 1100
INFO:iMPACT:2492 - '1': Completed downloading core to device.
'1': IDCODE is '20ba18' (in hex).
'1': ID Check passed.
'1': IDCODE is '20ba18' (in hex).
'1': ID Check passed.
'1': Erasing Device.
'1': Using Sector Erase.
'1': Programming Flash.
'1': Reading device contents...
done.
'1': Verification completed.
'1':Programming in x4 mode.
'1': Configuration data download to FPGA was not successful. DONE did not go high, please check your configuration setup and mode settings.
INFO:iMPACT - '1': Flash was not programmed successfully.
PROGRESS_END - End Operation.
Elapsed time = 78 sec.
If i read that correctly Data was written to the Flash but the fpga was not able to configure from that data.
Done-pin is connected to 3.3V via a 470 Ohms Resisor.
The Flash is a N25Q128A13ESE40G, Datasheet here: http://www.farnell.com/datasheets/1674445.pdf
I can perform a readback, checksum and an erase.
If i do a read device status this is the console output:
INFO:iMPACT - Current time: 27.07.2015 16:36:27
Maximum TCK operating frequency for this device chain: 25000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': IDCODE is '20ba18' (in hex).
'1': ID Check passed.
'1': IDCODE is '20ba18' (in hex).
'1': ID Check passed.
'1': IDCODE is '20ba18' (in hex).
'1': ID Check passed.
INFO:iMPACT - '1': Reloading FPGA configuration data stored in flash...
INFO:iMPACT:182 - done.
On the Flash side I have pulled s# and Hold up to 3.3V with 100k Resistors.
Can someone help me to find the problem?

So does the FPGA try to read the SPI flash when it boots ?
out with scope, probe the clock and the data , see if you can see it streamig out when you boot.
If so, then one other thing I see wrong a few times is data path of the SPI, single bit or 4 bits of data.
you have to make certain the bit file was created in the same width as the fgpa is expecting,
In ISE I think its in Impact where you make the SPI flash file and specify this .

Use labview to collect AE streaming data from pacpci2

Hello everyone,
I'm using labview to collect AE streaming data from pacpci2.I have the dll from PAC,and I have written some VIs for streaming data. Now I don't know how to read data to my program from the pci.Can the "getMessage" function do this?
Hope somebody has this experience can help me.Thanks a lot.
henry

No idea because you are leaving all the details out of your message.
What does "AE" mean in the way you use it?
What is "pacpci2"?
What PAC are you using?
What "Get Message" function are you talking about?

For clearing streaming data on stop button of FMLE

Hi
I am using FMLE 3.2 for streaming and AMS 5.
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I search for that at the end i got this :
http://help.adobe.com/en_US/adobemediaserver/devguide/WSd391de4d9c7bd609-52e437a812a3725df a0-8000.2.3.html#WS5262178513756206-67d61d971377ecd8c14-8000
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Please help me.
Thanks in Advance.

I do not have any insight of your application architecture and the changes you have made. So it will not be easy to explain you. Let me try one more time.
You have added a tab and embedded your own wda interface view in the component configuration. When a event is triggered the FPM transfers control to the component belongs to the UIBB and in this case your custom component.
Your custom component does not have any knowledge about the other UIBB's in the application.
The solution what i proposed was to analyse the current application and see if there is IF_FPM_SHARED_DATA, IF_FPM_TABBED_CONF_EXIT.
if they are implemented then your work would be simplified. all the events first comes to OVERRIDE_CONFIG_TABBED .You can capture your save event in OVERRIDE_CONFIG_TABBED and you can work around here.
If the above interfaces are not implemented then it is difficult for you to get the things done the way you would like to do.

Streaming data to an FPGA

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