/usr/share/psychtoolbox-3/PsychHardware/Daq/DaqMemRead.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 | function [data,TheErrors]=DaqMemRead(daq,address,bytes)
% [data,[errorstructure]]=DaqMemRead(DeviceIndex,address,bytes)
% USB-1208FS: Read memory. This command reads data from the configuration
% memory (EEPROM). All of the memory may be read.
% "DeviceIndex" is a small integer, the array index specifying which HID
% device in the array returned by PsychHID('Devices') is interface 0
% of the desired USB-1208FS box.
% "address" is the 16-bit start address for the read.
% "bytes" is the number of bytes to be read, up to a maximum of 62.
%
% Several functions called by this function may produce errors, so
% errorstructure is a vector. It is only returned if the function is called
% with two output arguments.
% See also DaqWriteCode, DaqMemWrite, Daq, DaqTest, PsychHidTest.
% 4/15/05 dgp Wrote it.
% 12/14/07 mpr added optional second output
% 1/11/08 mpr swept through attempting to improve consistency across daq
% functions
% I have not found a reason for the 62 byte limitation... -- mpr
if ~ismember(bytes,1:62)
error('Can''t read more than 62 bytes.');
end
err=PsychHID('ReceiveReports',daq);
if nargout > 1
TheErrors = BuildErrVector([],err);
end
err=PsychHID('ReceiveReportsStop',daq);
if nargout > 1
TheErrors = BuildErrVector(TheErrors,err);
end
[reports,err]=PsychHID('GiveMeReports',daq);
if nargout > 1
TheErrors = BuildErrVector(TheErrors,err);
end
report=zeros(1,4);
report(1)=48;
report(2)=bitand(address,255);
report(3)=bitshift(address,-8);
report(4)=0; % unused
report(5)=bytes;
err=PsychHID('SetReport',daq,2,48,uint8(report)); % MemRead
if nargout > 1
TheErrors = BuildErrVector(TheErrors,err);
end
if err.n
fprintf('DaqMemRead SetReport error 0x%s. %s: %s\n',hexstr(err.n),err.name,err.description);
end
[data,err]=PsychHID('GetReport',daq,1,48,bytes+1); % MemRead
if nargout > 1
TheErrors = BuildErrVector(TheErrors,err);
end
if err.n
fprintf('DaqMemRead GetReport error 0x%s. %s: %s\n',hexstr(err.n),err.name,err.description);
end
err=PsychHID('ReceiveReportsStop',daq);
if nargout > 1
TheErrors = BuildErrVector(TheErrors,err);
end
return;
function TheErrors = BuildErrVector(TheErrors,NewError)
if ~isfield(NewError,'reportLength')
NewError.reportLength = NaN;
end
if ~isfield(NewError,'reportTime')
NewError.reportTime = NaN;
end
if isempty(TheErrors)
TheErrors = NewError;
else
TheErrors(end+1) = NewError;
end
return;
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