Reading an Array Data from the Serial Port

Question

Merve ozdas 2023-7-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1999128-reading-an-array-data-from-the-serial-port

回答： VBBV 2023-7-22

How can I read the ARRAY data with 256 samples Array[256] from the Serial Port in matlab and show as a plot. I was using

s=serialport('COM13',19200);

i=1;

% out1 = instrfind('Port','COM3')

%open serial port

while(true)

data=readline(s);

deta(i)=str2double(data)

y=deta

drawnow;

% d = designfilt ('bandstopiir','FilterOrder',2,'HalfPowerFrequency1',46,'HalfPowerFrequency2',65,'SampleRate',1000); y = filter (d,deta);

if i<600

TF = isnan(deta)

deta(TF)=0;

end

h=[h;y(i)]

plot(y, 'r-');

i=i+1

end

But I am getting every values one by one, this makes my sampling rate really slow, normally I am using 13 kHz in MSP430, but I am taking 60 Hz sampling Rate. Can you help me? How can I Read and Plot an ARRAY with 256samples from the Serial Port. Thank you.

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Answer 1

VBBV 2023-7-22

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1999128-reading-an-array-data-from-the-serial-port#answer_1276958

data=read(s);

Try using read function which has option to read how many data samples you want at a time. It also allows to read all data input at once, which is something you want.