VT1433B User's Guide

Using the VT1433B

VT1433B Interrupt Behavior

Interrupt Setup

For an example of interrupt handling see the program event.c in the examples directory.

The VT1433B VXI module can be programmed to interrupt a host computer using the VME interrupt lines. VME provides seven such lines. Using hpe1432_setInterruptPriority, the VT1433B module can be set up to use any one of them.

The VT1432A can interrupt the host computer in response to different events. Use hpe1432_setInterruptMask to specify a mask of events on which to interrupt. This mask is created by OR'ing together the various conditions for an interrupt. The following table shows the conditions that can cause an interrupt:

Interrupt Mask Bit Definitions

 

Define (in e1432.h)

Description

HPE1432_IRQ_BLOCK_READY

Scan of data ready in FIFO

HPE1432_IRQ_MEAS_ERROR

FIFO overflow

HPE1432_IRQ_MEAS_STATE_CHANGE

Measurement state machine changed state

HPE1432_IRQ_MEAS_WARNING

Measurement warning

HPE1432_IRQ_OVERLOAD_CHANGE

Overload status changed

HPE1432_IRQ_SRC_STATUS

Source channel interrupt

HPE1432_IRQ_TACHS_AVAIL

Raw tach times ready for transfer to other modules

HPE1432_IRQ_TRIGGER

Trigger ready for transfer to other modules

VT1433B Interrupt Handling

To make the VT1433B module do the interrupt, both a mask and a VME Interrupt line must be specified, by calling hpe1432_setInterruptMask and hpe1432_setInterruptPriority respectively. Once the mask and line have been set and an interrupt occurs, the cause of the interrupt can be obtained by reading the HPE1432_IRQ_STATUS_REG register (using hpe1432_getInterruptReason). The bit positions of the interrupt mask and status registers match so the defines can be used to set and check IRQ bits.

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VXI manual VT1433B Interrupt Behavior, Define in e1432.h Description

VT1433B specifications

The VXI VT1433B is a versatile and sophisticated instrument designed for testing and measurement applications, particularly in the realm of telecommunications and electronics. Designed with the needs of engineers in mind, it brings a comprehensive set of features and technologies that enable accurate and efficient performance.

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The VT1433B utilizes advanced technology for signal processing and analysis. Equipped with high-resolution analog-to-digital converters, the unit ensures precise measurement of various signal types, including voltage, current, and frequency. This precision is critical for engineers who rely on accurate data to make informed decisions during the design and testing phases.

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