Timed excel loop for serial port

Question

Avichal 2013-4-11

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71691-timed-excel-loop-for-serial-port

I am trying to create a MATLAB program using an excel sheet with 500 values below 10, and 500 values above 10, a total of 1000 values. I need the program to read the values in a 10 second loop. Every time it reads values below ten it should send a signal of "1" to the serial port, and every time it reads the values above 10 it should send a signal of "0" to the serial port. How should I write this?

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Answer 1

Walter Roberson 2013-4-12

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https://ww2.mathworks.cn/matlabcentral/answers/71691-timed-excel-loop-for-serial-port#answer_81942

在 MATLAB Online 中打开

num = xlsread('YourFile.xls');
s = serial('COM1');
fopen(s);
for K = 1 : length(num)
  thisval = num(K);
  signaltosend = 1;
  if thisval > 10; signaltosend = 0; end
  fwrite(s, signaltosend, 'uint8');
  pause(10);
end
fclose(s);