function [sens, Par] = JA_check_hands_Warming_Up(Par,s)
% it checks that before the onset of the trial sensors sense enough pressure


% threshold to be exceeded
threshold = 50;

% washout what's in the serial port 
scrittura(s);

[~, ifi_as] = JA_frames_function(1, Par.ifi);

initial_test = 0.5; %secs

t = 0;
tic;

while t <= initial_test
    t = toc;
    
    % check if after 0.5 s the sensors are fine --> if so exit the function
    [sens] = JA_inside_fun_READ_WRITE();
    
end    
    % if any sensor does not sense enough pressure
    if sens.SBJ_DCG < threshold...
            || sens.SBJ_RISP < threshold
        
        while 1 % run the while loop until all the sensors sense pressure above threshold for 3 consecutive seconds
            
            % ask PTP and CF to put fingers on sensors by printing it on
            % the screen
            JA_inside_fun_FINGER_ON_SENSORS('Dita sui sensori!:-)')
            
            % wait 1 second
            WaitSecs(1.0);
            
            % check sensors again
            [sens] = JA_inside_fun_READ_WRITE();
            
            % if any of the sensors still do not feel enough pressure
            if sens.SBJ_DCG < threshold || sens.SBJ_RISP < threshold
                
                % go back to the while loop
                disp('not enough')
                continue
                
            else % in case all sense enough pressure --> start count down of 3 seconds
                
                
                [sens] = JA_inside_fun_FOR_CYCLE_COUNT_DOWN();
                disp('out of for cycle')
                % if the for loop ends --> sensors sensed enough pressure
                % --> return
                
                
            end
            
            
            disp('control last sensor cheking')
            if sens.SBJ_DCG > threshold...
                    && sens.SBJ_RISP > threshold
                % if the cycle inside JA_inside_fun_FOR_CYCLE_COUNT_DOWNend well, exit function
                disp('great!')
                return
            else
                disp('not_enough...do it again')
            end
            
            
        end
        
        % fi the while loop spits enough pressure on sensors
        % recorded on a period of 0.5 seconds
        % exit the function providing sensor values as output
        
        
    end
    
%end

disp('good initial conditions')

%JA_ready_screen()

return % if initial conditions are good, exit function






    function  [sens] = JA_inside_fun_READ_WRITE()
        
        % get baseline pressure
        tmp_value = scrittura(s);
        
        % slpit the 3 values that are read from the three pins in arduino
        tmp2 = (strsplit(tmp_value, '_'));
        
        % assign each value to the correct object (the SBJ_DCG is needed to check participnats' engagement effect)
        bs = str2double(tmp2);
        sens.CF = bs(1); % sensor used by CF to
        sens.SBJ_DCG = bs(2);
        sens.SBJ_RISP = bs(3);
    end


    function [] = JA_inside_fun_COUNT_DOWN(number)
        
        cd_num = num2str(number);
        
        % draw black 'hidden screen'
        Screen('FillRect', Par.window, [0 0 0], Par.screen_dimensions);
        
        % draw a count down starting from 3 on the hidden screen
        Screen('TextSize', Par.window, 80);
        DrawFormattedText(Par.window, cd_num, 'center',...
            'center', [0 1 1]);
        
        [Par.VBL] = Screen(Par.window, 'Flip', Par.VBL+Par.ifi,1);
        
    end


    function [] = JA_inside_fun_FINGER_ON_SENSORS(text)
        
        %text = 'Dita sui sensori!:-)';
        % draw black background
        Screen('FillRect', Par.window, [0 0 0], Par.screen_dimensions);
        
        % set text size
        Screen('TextSize', Par.window, 80);
        
        % draw text 'fingers on the sensors!' on the 'hidden screen'
        DrawFormattedText(Par.window, text, 'center',...
            'center', [0 1 1]);
        
        % flip the 'hidden screen' to the 'front screen'
        [Par.VBL] = Screen(Par.window, 'Flip', Par.VBL+ifi_as,1);
        
    end

    function [sens] = JA_inside_fun_FOR_CYCLE_COUNT_DOWN()
        
        for last_count = 3:-1:1
            
            % display count down
            JA_inside_fun_COUNT_DOWN(last_count)
            
            % check sensors --> are they still ok?
            [sens] = JA_inside_fun_READ_WRITE();
            
            
            % if any of them do not feel eonough pressure break the for
            % loop --> this will bring the script to the beginning of
            %the while loop
            if sens.SBJ_DCG < threshold...
                    || sens.SBJ_RISP < threshold
                
                ...go back to the 'while loop' before the for loop
                    disp('at least one sensor does not sense...go back to while');
                break
                
            end
            
            % wait before starting the next count
            WaitSecs(0.5);
            
        end
        
        
    end


    

end