Trigger Input

This examples shows how to start a Synapse recording using an external trigger into your processor
MATLAB monitors the bit input and controls Synapse state

Download M File

Download Experiment File

Housekeeping

Clear workspace and close existing figures. Add SDK directories to MATLAB

close all; clear all; clc;
[APIEXAMPLESPATH,name,ext] = fileparts(cd); % \TDTMatlabSDK\Examples
[SDKPATH,name,ext] = fileparts(APIEXAMPLESPATH); % \TDTMatlabSDK
addpath(genpath(SDKPATH));

Setup

This example uses the 'TrigIn' experiment included in the download.

syn = SynapseAPI();
EXPERIMENT = 'TrigIn';
syn.setCurrentExperiment(EXPERIMENT);

Runtime

Move into Standby Mode to wait for external trigger. Note: You must have Standby Mode enabled in Menu > Preferences.

syn.setMode(1);

Wait for external trigger to move to Preview mode

prevTime = 0; tic;
while syn.getParameterValue('Trigger1','TrigIn') == 0
    currTime = floor(toc);
    if currTime > prevTime
        fprintf('Waiting %d seconds for trigger\n', currTime);
    end
    prevTime = currTime;
end
fprintf('%.1f seconds elapsed.\nGo!\n', toc);
syn.setModeStr('Preview');

% Experiment Loop
pause(5);

% Move from Preview to Idle Mode when done
syn.setModeStr('Idle');

Waiting 1 seconds for trigger
Waiting 2 seconds for trigger
Waiting 3 seconds for trigger
Waiting 4 seconds for trigger
Waiting 5 seconds for trigger
5.2 seconds elapsed.
Go!

Runtime Output