2.1.6. Streaming¶

Streaming application enables user to stream data from Red Pitaya to :

Local file stored on Red Pitaya SD card

Over ethernet to remote computer using UDP or TCP protocol

User is able to set:

Sampling frequency

Number of input channels

Input channel resolution

HV/LV mode (for 125-xx need to switch the jumper)

Using calibration (For 125-xx, the filter is also calibrated)

RAW / Volt

Number of samples or unlimited

Streamed data can be stored into:

Standard audio WAV file format

Technical Data Management Streaming (TDMS) file format

Fast and compact binary format (BIN), which can later be converted to CSV format.

Max. streaming speeds are limited to:

10MB/s for streaming to SD card (SD card class 10 recommended for best streaming performance)

20MB/s for streaming over 1Gbit network (direct ethernet connection is recommended to achieve best streaming performance.)

2.1.6.1. Start using Red Pitaya streaming feature¶

) Run streaming app from Red Pitaya WEB interface
) Stream locally to a file
1. ) Set app properties & click RUN
  
  Example: streaming on ch1, 8bit resolution 5.208Msps into TDMS file format
2. ) Press STOP to stop streaming
3. ) Click Browse to open file browser and download streaming data file
4. ) Open file in DIAdem software
  
  that supports TDMS file reading, visualization & processing.
) Streaming to remote computer
1. ) Download streaming client to your computer.
  
  Linux tool
  
  Linux tool (beta)
  
  Windows tool
  
  Windows tool (beta)
2. ) Set app properties & click RUN
  
  Example: streaming on ch1, 16bit resolution 5Msps, TCP
3. ) Run streaming app on remote computer (copy IP from the WEB interface and select required file format)
rpsa_client.exe -h 192.168.1.29 -p TCP -f ./ -t wav

Data streaming can be stopped by pressing Ctrl + C

Created wav file can be read or visualized using Audacity software:
rpsa_client.exe -h 192.168.1.29 -p TCP -f ./ -t tdms

Data streaming can be stopped by pressing Ctrl + C

Created tdms file can be read or visualized using DIAdem software:
rpsa_client.exe -h 192.168.1.29 -p TCP -f ./ -t csv -s 100000 -v

The application saves data from board in BIN format. This is a binary format. If the application has finished writing data correctly or there is enough free space on the disk, the conversion to CSV format will be automatic.

Created csv file can be opened with any text editor or spreadsheet editor:

Note

The binary file can be converted using the convert_tool application.

In this application, you can also see the structure of the received file and the state of the file.