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Line 339: − + + + − + − function ret = buttonbox(cmd,varargin)+ − % to initialize connection: (omit 2nd argument if defaults apply)+ − % define settings as structure with fields:+ − % bb.Device = 'COM2';+ − % bb.BaudRate = 115200;+ − % bb.DataBits = 8;+ − % bb.StopBits = 1;+ − % bb.Parity = 'none'; − % handle = buttonbox('open',bb) − − % to run: (receiving incoming data, check code for own purposes) − % buttonbox('run'); − % − % or − % − % to send a marker: (marker: a numeric value; Fs: sampling frequency device) − % buttonbox(marker,Fs) − % − % or − % − % to wait for a buttonpress: − % buttonbox('clear'); (make sure buttonbox buffer is emptied) − % key = buttonbox('wait_keypress') − % − % to close the connection: − % buttonbox('close'); − persistent old_hdl % keep handle to COM object persistent + − % set defaults+ − bb.Device = 'COM2';+ − + − + − bb.StopBits = 1;+ − + + + + + + + + − if nargin < 1+ − cmd = 'open';+ − end+ − if nargin > 1 && isstruct(varargin{1})+ − % user overwrites default settings+ − flds = fields(varargin{1});+ − for n = 1 : numel(flds)+ − bb.(flds{n}) = varargin{1}.(flds{n});+ − end+ − end+ − if nargin==1 && isnumeric(cmd)+ − error('Please also specify acquisition sampling frequency of device that receives the marker');+ − end − if nargin > 1 && isnumeric(cmd) − marker = cmd; − cmd = 'marker'; − Fs = varargin{1}; − end − if ~any(strcmp(cmd,{'open','close'}))+ − if isempty(old_hdl)+ − help serial_buttonbox_common+ − error('Buttonbox not yet initialized');+ − end+ − handle = old_hdl; − end − − switch cmd − case 'marker' − fwrite(handle, uint8(marker));%IOPort('Write', handle, uint8(marker), 1); % last argument: blocking − WaitSecs(2/Fs); − fwrite(handle, uint8(0));%IOPort('Write', handle, uint8(0), 0); % last argument: blocking − return − case 'clear' − while(handle.BytesAvailable) − fread(handle, 1); − end − ret = []; % meaningless − return − case 'open' − % get handle to serial device − handle = open_buttonbox(bb); − ret = handle; − return − case 'close' − if nargin > 1 − handle = varargin{1}; − else − handle = old_hdl; − end − fclose(handle); − delete(handle); − ret = []; − return − case 'run' − % read incoming data − % code proceeds below .... − case 'wait_keypress' − % start polling for characters (indicating start of scan) − while(1) − data = []; − while handle.BytesAvailable − navailable = handle.BytesAvailable; − % read incoming data − [newdata, cnt] = fread(handle, navailable); − % concatenate possible new data − if cnt − data = [data newdata(:)]; − end − end − if ~isempty(data) − ret = data; − return − end − end − otherwise − fprintf('Unknown option %s\n',cmd); − ret = []; − return − end − − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% − % only gets here when cmd = 'run' % − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% − % Initialize output figure − win = list_output(' ',[]); − while 1 − % Exit if user closed output figure − if ~ishandle(win) − return − end − % start polling for characters (indicating start of scan) − navailable = handle.BytesAvailable; − if navailable − data = []; − while navailable − % read incoming data − [newdata, cnt] = fread(handle, navailable); − % concatenate possible new data − if cnt − data = [data newdata(:)]; − end − % check if any more data left − navailable = handle.BytesAvailable; − end − % output info about which button was pressed − for n = 1 : numel(data) − line = sprintf('incoming: %03d %s',data(n),char(data(n))); − list_output(line,win); − end − end − pause(0.01); − end %while 1 − − − − function hdl = open_buttonbox(device) − % open handle to serial device (mini buttonbox) WaitSecs(0.002); % just to load mex-file into memory − try − hdl = serial(device.Device, 'Baudrate', device.BaudRate, 'DataBits', device.DataBits, 'StopBits', device.StopBits, 'Parity', device.Parity); − fopen(hdl); − catch − if ~isempty(old_hdl) − fclose(old_hdl); − delete(old_hdl); − end − hdl = serial(device.Device, 'Baudrate', device.BaudRate, 'DataBits', device.DataBits, 'StopBits', device.StopBits, 'Parity', device.Parity); − fopen(hdl); − end − old_hdl = hdl; − fprintf('Wait for device buttonbox....\n'); − tic − while hdl.BytesAvailable && toc<10 − navailable = bbox.BytesAvailable; − % wait for welcome message device − fread(hdl, navailable); − end − pause(0.5); − end − − function win = list_output(line,win) − persistent ptr − persistent lines − persistent edt − Maxlines = 40; − if isempty(win) − % initialize listbox output figure − lines = cell(1,Maxlines); − [lines(1:end)]=deal({''}); − ptr=Maxlines; − lines(ptr) = {'Buttonbox output:'}; − idxs = mod(ptr:ptr+Maxlines-1,Maxlines)+1; − win = figure(); − % initialize figure to hold output text − edt = uicontrol('Parent',win,'Style','ListBox','HorizontalAlignment','left', ... − 'Max',Maxlines,'BackgroundColor',[1 1 1],'Visible','on','String',lines(idxs), ... − 'FontSize',12,'Value',Maxlines); − pos = get(win,'Position'); − set(edt,'Position',[1 1 pos(3) pos(4)]); − end − ptr = mod(ptr,Maxlines)+1; % start − lines{ptr} = line; − idxs = mod(ptr:ptr+Maxlines-1,Maxlines)+1; − set(edt,'String',lines(idxs),'Value',Maxlines); − drawnow; − end − end − end</syntaxhighlight>
no edit summary
{{Infobox tsg
| name = Buttonbox (2018)
| image = Buttonbox_2018_1.png
| caption = 2018 Buttonbox
| downloads = {{bulleted list
| [https://surfdrive.surf.nl/files/index.php/s/PPTKCyrjLkN4XUO Buttonbox 2018]
| [https://pypi.python.org/pypi/RuSocSci RuSocSci] (Python package)
}}
}}
{{Infobox tsg
{{Infobox tsg
| name = Buttonbox
| name = Buttonbox
| caption = 2013 Buttonbox
| caption = 2013 Buttonbox
| downloads = {{bulleted list
| downloads = {{bulleted list
| [[Buttonbox 2013 Hardware|Buttonbox 2013 Hardware Design]]
| [https://surfdrive.surf.nl/files/index.php/s/72XEcu2XKSgzxjp Buttonbox 2015]
| [https://pypi.python.org/pypi/RuSocSci RuSocSci] (Python package)
| [https://pypi.python.org/pypi/RuSocSci RuSocSci] (Python package)
}}
}}
===Output===
===Output===
Output knows two protocols: '''BITSI simple''' or '''BITSI extended'''. To enter a certain protocol two buttons have to be pressed when the BITSIbox is powered. '''Press button H and A for simple mode and H and B for extended mode.'''
Output knows two protocols: '''BITSI simple''' or '''BITSI extended'''. To enter a certain protocol two buttons have to be pressed when the BITSIbox is powered or com port opens. '''[2015]Press button H and A for simple mode and H and B for extended mode. [2018]Press button E and A for simple mode and E and B for extended mode.'''
If no button is pressed when powered it boots the last known protocol. In the simple protocol every byte sent to the BITSI over the serial port, is represented at the 8 bit output.
If no button is pressed when powered it boots the last known protocol. In the simple protocol every byte sent to the BITSI over the serial port, is represented at the 8 bit output.
=== Python/PsychoPy ===
=== Python/PsychoPy ===
Download this site-package to use the buttonbox: [https://pypi.python.org/pypi/RuSocSci rusocsci]
Download this site-package to use the buttonbox: [https://pypi.python.org/pypi/RuSocSci rusocsci]
or use in windows command 'pip install --upgrade rusocsci'
'''Example using buttons from the buttonbox in Python:'''
'''Example using buttons from the buttonbox in Python:'''
# make a buttonbox
# make a buttonbox
ser = serial.Serial("COM2", 115200, timeout = 0.10 )
ser = serial.Serial("COM2", 115200, timeout = 0.10 )
ser = serial.Serial("/dev/ttyUSB0", 115200, timeout = 0.10 )
while True:
while True:
For more documentation click here: http://pythonhosted.org//RuSocSci/index.html
For more documentation click here: http://pythonhosted.org//RuSocSci/index.html
<br>
<br>
=== Matlab ===
=== Matlab ===
'''Example using markers with the Buttonbox in Matlab:'''
<syntaxhighlight lang="matlab" line style="height:50em; overflow:auto;">
Download the file Bitsi.m from the DCCN website: https://intranet.donders.ru.nl/index.php?id=bitsim0
<br> Make sure to have this file in your Matlab path.
<syntaxhighlight lang="matlab" line style="overflow:auto;">
% At the start of your script, create the buttonbox serial object
bb = Bitsi("COM2");
% other code
:
</syntaxhighlight>
%
BITSI simple mode:
<syntaxhighlight lang="matlab" line style="overflow:auto;">
% This example is for an EEG system sampling at 500Hz samplerate.
bb.BaudRate = 115200;
% at the start of your script, reset marker
bb.DataBits = 8;
samplerate = 500;
pulseLen = 2000/samplerate;
bb.Parity = 'none';
bb.sendTrigger(0);
% send a marker
val = 1; % val: this is your marker code, range code 1-255
bb.sendTrigger(val);
java.lang.Thread.sleep(pulseLen); % wait long enough for the EEG system to capture the trigger, i.e., 2000/samplerate ms
% reset marker
bb.sendTrigger(0) % Note: if resetting the marker is not possible at this moment in code, you can decide to do this later as long as it has taken place long enough before the next marker has to be sent.
</syntaxhighlight>
BITSI extended mode:
<syntaxhighlight lang="matlab" line style="overflow:auto;">
samplerate = 500;
pulseLen = 2000/samplerate;
% select a function
bb.sendTrigger(uint8('X')); % select pulse time
bb.sendTrigger(pulseLen); % set time of duration pulse to (2000/samplerate) ms
val = 1; % val: this is your marker code, range code 1-255
bb.sendTrigger(uint8('M')); % select marker out
bb.sendTrigger(val); % val: this is your marker code, range code 1-255
</syntaxhighlight>
<syntaxhighlight lang="matlab" line style="overflow:auto;">
% At the end of your script, close the buttonbox serial object
:
bb.close();
</syntaxhighlight>