NHP-pRF/Experiment_code/Tracker-MRI/TRACKER_PTB/HRF-checker/engine/prestim_ptb.m

%Prestim
%Updated 19_10_2011 Chris van der Togt
%Updated to take PTB3 commands instead of cogent: Sept 2013 Chris Klink

global Par;

%% Das card
BtOn = 0;  %if using button presses set to 1
Par.Board = int32(22);  %mcc board = 22; Demo-board = 0
Par.nChannels = 8;
if ~isfield(Par, 'DasOn')
    Par.DasOn = 0; %persistent value
end

if Par.DasOn ~= 1
    %LPStat = dasinit( Par.Board, Par.nChannels);  %mexfunction acces!!
    dasinit( Par.Board, Par.nChannels);  %mexfunction acces!!
    Par.DasOn = 1;
end

%% PTB
warning('off','MATLAB:dispatcher:InexactMatch')

if ~isfield(Par,'window') % assume that if a window has been opened, it's still there
    ptbInit % initialize PTB
    Par.scr=Screen('screens');
    Par.ScrNr=max(Par.scr); % use the screen with the highest #
    PsychImaging('PrepareConfiguration');
    % Check which screen and flip if 3T BOLD
    if strcmp(Par.ScreenChoice,'3T') % 3T
        % flip horizontal
        PsychImaging('AddTask','AllViews','FlipHorizontal');
        fprintf([Par.ScreenChoice ' BOLD display: Flipping the screen\n']);
    elseif strcmp(Par.ScreenChoice,'Mock')% mock
        % specific mock stuff?
    elseif strcmp(Par.ScreenChoice,'NIN')% ephys setup
        % specific ephys stuff?
    else
    end
    %[Par.window, Par.wrect] = Screen('OpenWindow',Par.ScrNr,0,[],[],2,[],[],1);
    [Par.window, Par.wrect] = PsychImaging('OpenWindow',Par.ScrNr,0,[],[],2,[],[],1);
end
%Set-up blend function
[sourceFactorOld,destinationFactorOld,colorMaskOld] = ...
    Screen('BlendFunction',Par.window,GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

%% set eyerec trigger to 'off'
dasbit(0,1);

%////////////////////global variable Par settings//////////////////////////
% default file assignment
% make sure they exist and have all necessary parameters
Par.RUNFUNC = 'runstim';
Par.STIMSETFILE = 'StimSettings';
Par.PARSETFILE = 'ParSettings';
Par.MONKEY = 'DefMonkey';

eval(Par.PARSETFILE); %loads parameter settings from separate m-file