Sequence- Elements don't contain data

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Joined: 08/24/2018
Posts: 6
Sequence- Elements don't contain data
Package icon typedef-_bpdata.zip4.46 KB

I'm having trouble with the following topic

// Buffering data generated at 6 kHz, sending the buffer every 100 ms, expect 600 samples in the buffer
typedef sequence<double,650> BpDataSeq;

// This structure was created using a set of arrays to address story EBJH-1326
struct BPData {
BpDataSeq m_irmsBuffer;
BpDataSeq m_vrmsBuffer;
BpDataSeq m_pavgBuffer;
BpDataSeq m_zmagBuffer;

The LabVIEW Data type is attached, and I am initializing the array before passing it to the creation function.

The developers created a topic publisher for me to debug with. I'm getting a full match on the match graph. The sequence is showing up with the correct amount of elements (the test publisher only has 1 incrementing number). However, the value of the first element is always 0 in LabVIEW.

I can subscribe to this topic in the admin console and see the rolling counters in these sequences, so the data is there, just not getting through the DLL/LabVIEW.

Ismael Mendez's picture
Joined: 07/03/2017
Posts: 17

Hi Josh,

This is a known bug. It happens when the arrays size is lower than the maximum specified size. You can work around it this by sending always the array with the maximum size (650 in this case). This will be fixed in the next release.