delay sending data rs232

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Oday Shahadh
Oday Shahadh 2021-8-17
回答： Vidhi Agarwal 2024-12-4
hello,
Can any one help on hpe to delay the (vv) values to be delayed in sending every 2 seconds?
clc
clear all
%s = serial('COM1','BaudRate',9600,'ByteOrder','bigEndian','FlowControl','none','Terminator','','TimeOut',10);% baud
s=serial('COM7','BaudRate', 9600, 'Terminator', 'CR','ByteOrder',...
'BigEndian','InputBufferSize',256,'TimeOut',10);
fopen(s);
%get(s);
% fprintf(s,'*idn?');
% out0 = fscanf(s)
% fprintf(s,':syst:err?');
% out1 = fscanf(s)
fprintf(s,'OUTP:STAT 1');
cc=3;
cmd = num2str(cc,':CHAN1:CURR\b %2.2f;CURR?')
fprintf(s,cmd);
%out2 = fscanf(s)
vv=[2,4,6,8]; %%%%%%%%%%%%%%
vmd = num2str(vv,':CHAN1:VOLT\b %2.2f;VOLT?')
fprintf(s,vmd);
%out3 = fscanf(s)
fprintf(s,':CHAN1:MEAS:CURR?');
%out4 = fscanf(s)
fprintf(s,':CHAN1:MEAS:VOLT?');
%out5 = fscanf(s)
%fprintf(s,'OUTP:STAT 0');
fclose (s);
delete (s);

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回答（1 个）

Vidhi Agarwal
Vidhi Agarwal 2024-12-4
hi @Oday Shahadh,
To introduce a delay between sending each value from the vv array, you can use MATLAB's "pause" function. This function will pause the execution of your script for a specified number of seconds. Follwoing is the sample code that can help you in understanding the implementation for the same.
% Voltage values to be sent
vv = [2, 4, 6, 8];
% Loop through each voltage value, send it, and pause for 2 seconds
for i = 1:length(vv)
vmd = sprintf(':CHAN1:VOLT %2.2f;VOLT?', vv(i));
fprintf(s, vmd);
pause(2); % Pause for 2 seconds
end
To read more about "pause" function in MATLAB refer to the given documentation: https://www.mathworks.com/help/matlab/ref/pause.html
Hope this helps!

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