/usr/share/psychtoolbox-3/PsychHardware/Daq/DaqReset.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | function err=DaqReset(OldDaqIndex)
% err=DaqReset(DeviceIndex)
% Assuming that something's wrong with the USB-1208FS or our communication
% with it, we re-enumerate in order to re-establish communication. Then we
% send the reset command to ask the USB-1208FS to reset itself. Then we
% re-enumerate again to re-establish communication once more.
%
% To avoid problems caused by CLEAR PsychHID, we recommend that (if you're using
% a 1208FS), instead of calling DaqReset, you unplug and reinsert the USB cable
% of your USB-1208FS and quit and restart MATLAB. In Denis' experience that
% combination always restores normal communication. If you are using a 1608FS,
% keep reading...
%
% This function calls "clear PsychHID" twice, and yet I still frequently found
% that I needed to run that command again in order for communication to be
% properly established again. With a USB-1608FS, Matlab 2007b, and Leopard, I
% found that I didn't have the problems Denis seemed to have. But what I did
% have was a problem with PsychHID not finding all of the interfaces when
% devices were enumerated. Running this function (followed by an additional
% "clear PsychHID" command) worked for me, so my recommendation for that case is
% the opposite of Denis'. I never needed to re-start Matlab or unplug the
% device to get my problems solved. So I recommend you just run this command,
% then run "clear PsychHID", then try "daq=DaqFind" or "daqs=DaqDeviceIndex"
% (the latter if you have more than one A/D converter built by Measurement
% Computing. -- mpr
%
% On Snow Leopard. Matlab R2010a, I found I could re-establish communication
% with an unresponsive 1208FS with the calls above (that is, calling DaqReset
% followed by "clear PsychHID") -- sdv
%
% See also Daq, DaqFunctions, DaqPins, DaqTest, PsychHIDTest, DaqFind,
% DaqDeviceIndex.
% 4/15/05 dgp Wrote it.
% 1/9/08 mpr tweaked it for use with 1608FS
% 6/30/2010 sdv fixed error if any USB devices were shorter than 10 characters
fprintf('Resetting USB-1x08FS.\n');
clear PsychHID; % flush current enumeration (list of devices)
clear PsychHIDDAQS;
devices=PsychHIDDAQS; % enumerate again
daq=[];
for k=1:length(devices)
if length(devices(k).product)>=10
if all(devices(k).product([4:5 7:10]) == '-108FS')
if isempty(daq)
daq=k;
elseif ~streq(devices(k).serialNumber,devices(daq(end)).serialNumber)
daq(end+1)=k;
end %isempty
end %all devices
end %length
end
if isempty(daq)
error('Sorry, couldn''t find a USB-1x08FS.');
end
if ~any(ismember(OldDaqIndex,daq))
NewDaqIndex=daq(1);
else
NewDaqIndex=OldDaqIndex;
end
% Reset. Ask the USB-1208FS to reset its USB interface.
% CAUTION: Immediately after RESET, all commands fail, returning error
% messages saying the command is unsupported (0xE00002C7) or the device is
% not responding (0xE00002ED) or not attached (0xE00002D9). To restore
% communication we must flush the current enumeration and re-enumerate the
% HID-compliant devices.
% fprintf('Reset. Ask the USB-1208FS to reset its USB interface.\n');
err=Reset(NewDaqIndex);
% fprintf('(Reestablishing communication: Flushing current enumeration. ');
clear PsychHID; % flush current enumeration (list of devices)
clear PsychHIDDAQS;
% fprintf('Re-enumerating. ... ');
devices=PsychHIDDAQS; % enumerate again
% Not sure what the point of this next bit is since we don't do anything with
% the information we acquire, but it seems harmless enough so I leave it in. --
% mpr
daq=[];
for k=1:length(devices)
if length(devices(k).product)>=10,
if all(devices(k).product([4:5 7:10]) == '-108FS')
if isempty(daq)
daq=k;
elseif ~streq(devices(k).serialNumber,devices(daq(end)).serialNumber)
daq(end+1)=k;
end
end
end
end
% fprintf('Done.)\n');
return
function err=Reset(DaqIndex)
% err=Reset(DeviceIndex)
% USB-1208FS: Ask device to reset its USB interface.
err=PsychHID('SetReport',DaqIndex,2,65,uint8(65)); % Reset
if err.n
fprintf('Reset SetReport error 0x%s. %s: %s\n',hexstr(err.n),err.name,err.description);
end
return
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