matlab与arduino通信,【arduino】Arduino UNO智能小车和Matlab串口数据通信

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clear;clc;

global s1;%%//s1为光电测速传感器返回值

global s2;

s1=serial('COM4');

set(s1,'BaudRate',38400);

s1.BytesAvailableFcn=@dianjibiaocan_receiveFcn_3;

s1.BytesAvailableFcnMode='byte';

% s1.BytesAvailableFcnCount=1;

s1.ReadAsyncMode='continuous';

fopen(s1);

s1.status

global loopCount;

global CountTimes;

global BackTime;

global velocity;

global distance;

global a;

global T;

global PeriodTime;

PeriodTime=0.015;

%%----------------主函数(执行循环)使程序不断运行--------------

loopCount=1;

BackTime=[];

CountTimes=[];

velocity=[];

distance=[];

T=0;

disp('started\n');

power=240;

while 1

tstart=tic;

tused=0;

switch loopCount

case 50

disp('The sensor has send datas back for 50times')

disp(a(loopCount-1))

disp(velocity(loopCount-1))

case 100

disp('The sensor has send datas back for 100 times ')

disp(a(loopCount-1))

disp(velocity(loopCount-1))

break

otherwise

end

% /*********空执行定时延时程序*********/

while (tused

tused=toc(tstart);

end

end

b=0;

fprintf(s1,'%d\n',b);

fclose(s1);

delete(s1);

clear s1;