Check how many bytes are available in the input buffer using “BytesAvailable” before calling fread. “s.BytesAvailable” tells you how many bytes are waiting in the input buffer. If no bytes are available, skip fread and handle as a "no response”. This way, you can avoid calling fread when no data is ready, preventing the timeout warning.
Here’s how you can modify your code:
b = [];
for i = 1:1:7
% Wait briefly to allow data to arrive (optional small pause)
pause(0.05); % Adjust as needed
% Check if any bytes are available
if s.BytesAvailable > 0
% Read 1 byte
a = fread(s, 1, 'uchar');
b = [b decimalToBinaryVector(a, 8)];
else
% No data received for this address
disp(['No response for address ', num2str(i)]);
b = [b zeros(1,8)]; % or skip adding to b, depending on your logic
end
end
disp(b);
For additional information, look into the following MATLAB answer:
Hope this helps!
