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Overview
This example allows a user to stream an output from disk to an HSDIO device (654x/655x/656x).
Description
This example uses a queues as a buffer between a file and an HSDIO device. The code is composed of two phases:
1. Initialization
a. Calculate number of samples per block/queue container
b. Calculate the total number of blocks
c. Generate a script to output all blocks/queue containers
d. Fill the onboard memory and the queue prior to starting generation
e. Optimize MITE for streaming
2. Generation
a. Consumer loop:
i. Check available space in onboard memory repeatedly
ii. When enough space for one block exists, dequeue first element in queue and write to the onboard memory
b. Producer loop:
i. Write the next element from file to queue
ii. Queue will block adding additional elements if queue is full
More in-depth details can be found on the Block Diagram of the VI.
Requirements
Software
LabVIEW 2012 (or compatible)
NI-HSDIO driver which is compatible with your hardware and version of LabVIEW
Hardware
NI HSDIO device (654x/655x/656x)
Instructions
1. From the project explorer, open niHSDIO Stream from Disk Queue Binary File IO.vi
2. Set the values on the front panel (Resource Name, Channel List, Buffer/File Configuration, Clock and Play Mode)
3. Run the VI
Additional Information or References
**This document has been updated to meet the current required format for the NI Code Exchange.**
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.