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i am facing an error -Error while evaluating TimerFcn for timer 'timer-1' Double inputs must have integer values in the range of ASSUMEDTYPE.,data is not showing continously..:(

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Sidharth Pancholi
Sidharth Pancholi on 29 Feb 2016
Answered: Abolfazl Nejatian on 15 Aug 2020
i am getting data from teensy3.2 to matlab gui and there is a acquire option for data acquire option
v.timerObj = timer('Period', v.gSecPerScreenRefresh, 'ExecutionMode', 'fixedSpacing', 'timerFcn', {@getDataFromDeviceType});
output=Assuming device is named "COM7", use the Device Manager to show active ports.
Channels available: 8 Device ID register value: 146
ads Data: Recording 7 channels at 4000 Hz attached to port "COM7"
Error while evaluating TimerFcn for timer 'timer-1'
Double inputs must have integer values in the range of ASSUMEDTYPE.
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Answers (2)

Abolfazl Nejatian
Abolfazl Nejatian on 1 Aug 2020
I have faced with the similar error.
is there any way to use Try/Catch block to handle this kind of error in Timerfcn .
i mean this error happens in a vague situation for me (once in 10 times of run) so the question is is there any way to ignore it?
thanks in advance
  1 Comment
Walter Roberson
Walter Roberson on 1 Aug 2020
Are you also using ScopedMath from Arduino? Or from Flock of Birds? Or do you have some other code that is invoking bitshift() ?
You could put in a try/catch block, such as replacing
theSamples(i,samples) = bitshift(theSamples(i,samples),-8);
with
try
shifted_output = bitshift(theSamples(i,samples),-8);
catch ME
shifted_output = something; %... what, exactly?
end
theSamples(i,samples) = shifted_output;
but if you were going to do that, then it seems to me it would make more sense put in some code to help debug the problem.

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Abolfazl Nejatian
Abolfazl Nejatian on 15 Aug 2020
no,
in my code, I use many times,
cd(myNewAddress);
and by changing the current folder this error appears for me.
well, in the second folder i have some java code to parse some data from the OANDA database and during this interaction/ some times i got timerfcn error.
i use pause(.1) after any cd() and then some errors are gone but still some time(it is vague for me when !) i faced with the error.
the bad point is when it faces with error entire of the cycle of timer stop.

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