/usr/share/psychtoolbox-3/PsychHardware/PR705Toolbox/PR705measspd.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
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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 | function spd = PR705measspd(S)
% PR705measspd - Get a spectral power distribution from the PR-705.
%
% Syntax:
% spd = PR705measspd([S])
%
% Input:
% S (1x3) - Desired wavelength sampling. Default: [380 5 81]
%
% Output:
% spd (Nx1) - The spectral power distribution (N = S(3) or 81 by default).
%
% 12/06/12 zlb Wrote it loosely based on the PR670Toolbox.
% PR-705 measurement error codes
% -5000: Weak Signal
% -4999: Time underflow, level overflow
% -4996: A2D overflow, measuring light
% -4995: A2D overflow, measuring dark
% -4994: Variable light level
% -4993: Adaptive exposure time limit
if nargin < 1 || isempty(S)
S = [380 5 81];
end
timeout = 300;
[rawspd,errcode] = PR705rawspd(timeout);
if isempty(rawspd) || isempty(errcode)
error('Didn''t get a measurement reponse after %d seconds', timeout);
end
switch errcode
case 0
spd = PR705parsespdstr(rawspd, S);
case {-4995,-4993} % too dark?
spd = zeros(S(3), 1);
otherwise
error('Received unhandled error code %d', errcode);
end
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