setTriggerCondition

Configure each signal value comparison

Since R2024a

Syntax

setTriggerCondition(hub,signalName,enable,signalValue)

setTriggerCondition(hub,signalName,enable,signalValue,Name=Value)

Description

setTriggerCondition(hub,signalName,enable,signalValue) configures a trigger value comparison for the signal name in trigger stage 1 for the first data capture IP. hub is a customized data capture hub object. The enable argument indicates whether this signal is part of the overall trigger condition.

setTriggerCondition(hub,signalName,enable,signalValue,Name=Value) specifies options using one or more name-value arguments. For example, TriggerStageIndex=2 sets the trigger stage to 2.

Examples

Set Up Trigger Conditions for Multiple Trigger Stages and Data Capture IPs

This example uses a customized data capture hub object, DC, that connects with two data capture IPs. The first data capture IP is datacapture1 and the second data capture IP is datacapture2. Each IP defines two signals for both trigger and data capture. Signal A is 1 bit and signal B is 8 bits. The maximum number of trigger stages is set to 2.

Set number of trigger stages to 2 for both the IPs.

setNumberofTriggerStages(hub,2,DataCaptureName="datacapture1");
setNumberofTriggerStages(hub,2,DataCaptureName="datacapture2");

Set up a trigger condition to capture data when the FPGA detects a high value on signal A and a value 17 on signal B. Set this condition in trigger stage 1 for the datacapture1 IP.

setTriggerCondition(hub,'A',true,'High');
setTriggerCondition(hub,'B',true,uint8(17));

Set up a trigger condition to capture data when the FPGA detects a high value on signal A. Set this condition in trigger stage 2 for the datacapture1 IP.

setTriggerCondition(hub,'A',true,'High',TriggerStageIndex=2);

Set up a trigger condition to capture data when the FPGA detects a high value on signal A. Set this condition in trigger stage 2 for the datacapture2 IP.

setTriggerCondition(hub,'A',true,'High', ...
TriggerStageIndex=2,DataCaptureName="datacapture2");

Input Arguments

hub — Data capture hub object

dataCaptureHub object

Data capture hub object that interacts with each data capture IP, specified as a dataCaptureHub object.

signalName — Name of trigger component signal

character vector

Name of trigger component signal, specified as a character vector.

This name must match one of the signal names configured on creation of the data capture IPs. The signal must be configured as a possible trigger signal.

Data Types: char

enable — Indication that signal is part of trigger condition

true or 1 | false or 0

Indication that the signal is part of the trigger condition, specified as a numeric or logical 1 (true) or 0 (false). To use this signal in the overall trigger condition, set this value to 1 (true). When you set this value to 0 (false), the signal is not used for the overall trigger condition.

signalValue — Value to compare this signal to as part of the trigger condition

decimal | binary | hexadecimal | 'Low' | 'High' | 'Rising edge' | 'Falling edge' | 'Both edges'

The trigger condition comprises value comparisons of one or more signals. This input specifies the value to match for each signal.

For a multibit signal, specify a decimal, binary, or a hexadecimal value within the range of the data type associated with the signal. While providing hexadecimal or binary values, you can provide values with a combination of X or x (don't care value) to enable bit masking. That means, while comparing the values, the trigger condition ignores the place values with X or x and provides the output.

To separate a group of bits for better readability, you can use _ between bits. For example, you can represent a 32-bit binary value as '0b1010_XXXX_1011_XXXX_1110_XXXX_1111XXXX' and a 32-bit hexadecimal value as '0xAB_CDEXFX'.

For logical signals, specify a string that indicates the level or edge to match. For more information, see Triggers.

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: setTriggerCondition(hub,'A',true,'High',DataCaptureName="datacapture1");

TriggerStageIndex — Trigger stage

1 (default) | integer from 1 to M

Trigger stage, specified as an integer from 1 to M, where M is set by the Max trigger stages parameter of the FPGA Data Capture Component Generator tool.

DataCaptureName — Name of data capture IP

"generatedIPName1" (default) | character vector | string scalar

Name of the data capture IP, specified as a character vector or string scalar. The default value for this argument is "generatedIPName1", where generatedIPName1 is the name of the first data capture IP set by the Generated IP name parameter of the FPGA Data Capture Component Generator tool.

Version History

Introduced in R2024a