matlab读串口数据问题

Posted 2023-05-16

用matlab设计GUI界面，使他具有读串口数据的功能，请问，应该如何编程，使它能不断连续读串口，而不用人工一直去控制它读！！！
总而言之，就是当我只要按一次开始读串口按钮，然后它就会自动的一直读数据，再经过处理就可以实时的实现某种功能！！！1

如果一直读数据，可以使用一个Timer来读串口就可以了。但是，不用也可以，应为串口有一个属性可以当接收缓冲区中有数据的时候自动接收。如下：
comPort=get(handles.pumComPort,'String');
handles.u_sCom=serial(comPortget(handles.pumComPort,'Value'));
baudRate=get(handles.pumBaudRate,'String');
set(handles.u_sCom,'BaudRate',str2double(baudRateget(handles.pumBaudRate,'Value')));
dataBits=get(handles.pumDataBits,'String');
set(handles.u_sCom,'DataBits',str2double(dataBitsget(handles.pumDataBits,'Value')));
stopBits=get(handles.pumStopBits,'String');
set(handles.u_sCom,'StopBits',str2double(stopBitsget(handles.pumStopBits,'Value')));
parity=get(handles.pumParity,'String');
if strcmp(parity,'无')==1
set(handles.u_sCom,'Parity','none');
else
if strcmp(parity,'奇校验')==1
set(handles.u_sCom,'Parity','odd');
else
if strcmp(parity,'偶校验')==1
set(handles.u_sCom,'Parity','even');
else
set(handles.u_sCom,'Parity','none');
end
end
end
flowControl=get(handles.pumFlowControl,'String');
if strcmp(flowControl,'无')==1
set(handles.u_sCom,'FlowControl','none');
else
if strcmp(flowControl,'硬件')==1
set(handles.u_sCom,'FlowControl','hardware');
else
if strcmp(flowControl,'软件')==1
set(handles.u_sCom,'FlowControl','software');
else
set(handles.u_sCom,'FlowControl','none');
end
end
end

set(handles.u_sCom,'Timeout',1);
set(handles.u_sCom,'InputBufferSize',1024);
set(handles.u_sCom,'BytesAvailableFcnMode','byte');
set(handles.u_sCom,'BytesAvailableFcnCount',1);
set(handles.u_sCom,'BytesAvailableFcn',@BytesAvailableFcnCallback,handles);

fopen(handles.u_sCom);
set(handles.txtStatus,'String','打开端口成功');
set(hObject,'Enable','off');
set(handles.btnClosePort,'Enable','On');
guidata(hObject,handles);
set(handles.btnSendData,'Enable','On');
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matlab读.mat写入txt

问题：

读VehicleInfo.mat里面的数据，存入一个.txt文件中

代码：

load(‘VehicleInfo.mat‘);
sz = size(VehicleInfo);
nums = sz(1);

anno = VehicleInfo;
fout=fopen(‘bit_vehicles_anno.txt‘, ‘w‘);
for i=1:nums
    name = anno(i).name;
    height = anno(i).height;
    width = anno(i).width;
    vehicles = anno(i).vehicles;
    nVehicles = anno(i).nVehicles;
    for j=1:nVehicles
        left = num2str(vehicles(j).left);
        top = num2str(vehicles(j).top);
        right = num2str(vehicles(j).right);
        bottom = num2str(vehicles(j).bottom);
        cls_name = vehicles(j).category;
        %fprintf(fout, ‘%s;%d;%d;%d;%d;%d;%d;%s
‘,
        %    name, height, width, left, top, right, bottom, cls_name);
        outline = [name, ‘;‘, left, ‘;‘, top, ‘;‘, right, ‘;‘, bottom, ‘;‘, cls_name, ‘
‘];
        fprintf(fout, outline);
    end
end
fclose(fout);