Matlab实时读取串口数据并实时画图方法

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Matlab实时读取串口数据并实时画图方法

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按照数据串口协议如：$KT2,1.80,88.18,39.54,42.86,LO=[0.72,-1.04,0.35]，举例。

s = serialport("COM12",115200,"Timeout",5);
pos=zeros(100000,3);
j=1;
data1= read(s,1,"uint8");
% while (data1 ~= 10)
while (j<500)data1= read(s,1,"uint8");  
while (data1 == '[')for i=1:3sum=0;sign=1;data1= read(s,1,"uint8");if (data1=='-') sign=-1;data1= read(s,1,"uint8");endwhile (data1~='.')data3=data1-48;sum=sum*10+data3;data1= read(s,1,"uint8");         enddata1= read(s,1,"uint8"); data3=data1-48;sum=sum+data3*0.1;data1= read(s,1,"uint8"); data3=data1-48;sum=sum+data3*0.01;data1= read(s,1,"uint8"); sum=sum*sign;pos(j,i)=sum;endj=j+1;
endend
delete(s);
plot(pos(1:500,1),pos(1:500,2))