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Obtain sets of data using serial communication

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Shawn Chang
Shawn Chang 2012-10-19
关闭： MATLAB Answer Bot 2021-8-20
Hi all,
I wish to obtain sets of data which resulted from my robotic car through serial communication. The code that I written to obtain sets of from robotic car is as below. After troubleshooting for many time but the code still didn't worked.
s_port=serial('COM6','BaudRate',115200,'Parity','none'...
,'DataBits',8,'FlowControl','none');
set(s_port,'InputBufferSize',15,'OutputBufferSize',15,'Timeout',1);
fopen(s_port);
%send the time and speed to Robocar
fprintf(s_port,sprintf('%s %d', speed, sim_t));
%for loop to get receive granted signal for robotic car
for i=1:(sim_t*10)
access = fgetl(s_port);
if (access == 'OK')
break;
end
end
%for loop to obtain sets of data
for i=1:(sim_t*10)
data = fgetl(s_port);
pause(0.001);
end
  3 个评论
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Shawn Chang
Shawn Chang 2012-10-21
If the code working, the robotic car will run based on the speed and time specified by user in matlab gui. Afterwards, obtain and process the data when matlab detected the string 'OK' sent by robotic car.
Walter Roberson
Walter Roberson 2012-10-21
That is what it is intended to do: what happens instead? For example are any error messages produced?

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回答（1 个）

Walter Roberson
Walter Roberson 2012-10-19
Do not use "==" to compare strings: use strcmp() instead.

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