matlab程序读取单片机通过串口传来的IMU角度数据,并用曲线显示出来。
上传的值为float型,每个数据后有回车符。范围90~-90
主文件 serial_test2.m
- %%
- clc;
-
- global t;
- global x;
- global m;
- global ii;
-
- t = [0];
- m = [0];
- ii = 0;
- x = -100;
- p = plot(t,m,'EraseMode','background','MarkerSize',5);
- axis([x-200 x+200 -90 90]);
- grid on;
-
- %%
-
- try
- s=serial('com4');
- catch
- error('cant serial');
- end
- set(s,'BaudRate', 115200,'DataBits',8,'StopBits',1,'Parity','none','FlowControl','none');
- s.BytesAvailableFcnMode = 'terminator';
- s.BytesAvailableFcn = {@callback,p};
-
- fopen(s);
-
- pause;
- fclose(s);
- delete(s);
- clear s
- close all;
- clear all;
回调函数 callback.m
- %%
- function callback(s, BytesAvailable,p)
-
- global t;
- global x;
- global m;
- global ii;
-
- out = fscanf(s);
- data = str2num(out)
-
- t = [t ii];
- m = [m data];
- set(p, 'XData',t,'YData',m(1,:));
-
- drawnow
- x = x + 1;
- axis([x-200 x+200 -90 90]);
- ii=ii+1;
- end
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