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RIO Developer Essentials Guide for Academia

"MyRIO default personality" tag

LabVIEW RT icon and FPGA icon

RT programming: FPGA personalities
RT guide

The FPGA "personality" (bitstream configuration file) determines how the RT target interacts with peripheral devices. The personality can also implement custom functionality.

Screenshot of LabVIEW VI front panel of the default Academic RIO Device FPGA personality

Modify the default Academic RIO Device FPGA personality
FPGA procedure

Add your own functionality to the default Academic RIO Device FPGA "personality" (bitfile) to retain selected Device Express VI capabilities.

LabVIEW RT icon and exclamation point icon

RT programming: Interrupts
RT guide

Use an onboard timer or an external event interrupt request (IRQ) to immediately execute a task.

LabVIEW RT block diagram snippet: Create a digital input transition IRQ (interrupt request), associate with a callback VI

Externally-triggered action using interrupt request (IRQ)
RT code

Run a callback VI each time that a digital input transition or an analog input voltage threshold crossing generates an interrupt request (IRQ).

LabVIEW RT block diagram snippet: Create a timer IRQ (interrupt request), associate with a callback VI

Timer-driven background process using interrupt request (IRQ)
RT code

Run a callback VI each time that an FPGA-based interval timer generates an interrupt request (IRQ).

LabVIEW RT block diagram snippet: Programmatically set a custom FPGA bitfile; alert the VI to expect myRIO default personality functionality on the custom FPGA bitfile

Augmented default Academic RIO Device FPGA personality and high-precision waveform measurement application example
FPGA code RT code

Load and run a modified version of the default Academic RIO Device personality (FPGA bitfile) augmented by user-defined functionality, for example, to make a high-precision measurement of pulse width.