作用效果：利用matlab的串口将信息发送到arduino端，并根据信息内容执行相应的程序。例如，matlab发送字符‘ssP’，arduino收到P时开始执行（相当于截止字符），提取字符串“ssP”的第一位，如果kk=第一位==‘s’,则开始闪烁灯。
matlab代码
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20clear;clc; delete(instrfind({'Port'},{'COM6'}));%断开，释放串口对象占用空间 global s;%建立全局变量s s = serial('COM6','BaudRate',9600,'DataBits',8);%设定相关的串口参数 fopen(s); set(s,'BytesAvailableFcnMode','Terminator'); set(s,'Terminator','H'); %设立中断，当串口检测到字符H时触发中断 s.BytesAvailableFcn =@ReceiveCallback; %中断触发后处理回调的事 for k=1:1:3 fprintf(s,'lsH'); pause(0.3);%时间间隔不宜过小 end function ReceiveCallback(obj,event) %执行回调的函数 global s; a = fscanf(s); disp(a); I = 'I Received'; disp(I); end
arduino代码
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47char function_1; String Indata; String kk; void setup() { Serial.begin(9600); pinMode(13,OUTPUT); } void loop() { if(Serial.available()>0){ function_1 = Serial.read(); Indata +=function_1; //Serial.print("fggk"); if(function_1 == 'H'){ //Serial.print("jgf"); //Serial.print(Indata); delay(20); kk = Indata.substring(0,1);//调取字符串的第一个字符 Serial.print(kk); Serial.print("H"); if(kk =="s") { for(int i=0;i<5;i++){ //Serial.print(kk); digitalWrite(13,HIGH); delay(500); digitalWrite(13,LOW); delay(500); Indata = ""; } } if(kk=="l"){ digitalWrite(13,HIGH); delay(4000); } if(kk=="o"){ digitalWrite(13,LOW); delay(4000); digitalWrite(13,HIGH); delay(4000); Indata=""; } } } }
matlab利用GUI发送串口信息：代码
Matlab GUI的全部的代码
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163%%%%利用matlab的GUI控制步进电机的运转方向，角度 function varargout = GUI_steppermotor(varargin) % GUI_STEPPERMOTOR MATLAB code for GUI_steppermotor.fig % GUI_STEPPERMOTOR, by itself, creates a new GUI_STEPPERMOTOR or raises the existing % singleton*. % % H = GUI_STEPPERMOTOR returns the handle to a new GUI_STEPPERMOTOR or the handle to % the existing singleton*. % % GUI_STEPPERMOTOR('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in GUI_STEPPERMOTOR.M with the given input arguments. % % GUI_STEPPERMOTOR('Property','Value',...) creates a new GUI_STEPPERMOTOR or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before GUI_steppermotor_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to GUI_steppermotor_OpeningFcn via varargin. % % *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one % instance to run (singleton)". % % See also: GUIDE, GUIDATA, GUIHANDLES % Edit the above text to modify the response to help GUI_steppermotor % Last Modified by GUIDE v2.5 17-Apr-2021 13:42:05 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @GUI_steppermotor_OpeningFcn, ... 'gui_OutputFcn', @GUI_steppermotor_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT % --- Executes just before GUI_steppermotor is made visible. function GUI_steppermotor_OpeningFcn(hObject, eventdata, handles, varargin) % This function has no output args, see OutputFcn. % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % varargin command line arguments to GUI_steppermotor (see VARARGIN) % Choose default command line output for GUI_steppermotor handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes GUI_steppermotor wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = GUI_steppermotor_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT); % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Get default command line output from handles structure varargout{1} = handles.output; function edit1_Callback(hObject, eventdata, handles) % hObject handle to edit1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: get(hObject,'String') returns contents of edit1 as text % str2double(get(hObject,'String')) returns contents of edit1 as a double % --- Executes during object creation, after setting all properties. function edit1_CreateFcn(hObject, eventdata, handles) % hObject handle to edit1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles empty - handles not created until after all CreateFcns called % Hint: edit controls usually have a white background on Windows. % See ISPC and COMPUTER. if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end % --- Executes on selection change in popupmenu1. function popupmenu1_Callback(hObject, eventdata, handles) % hObject handle to popupmenu1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: contents = cellstr(get(hObject,'String')) returns popupmenu1 contents as cell array % contents{get(hObject,'Value')} returns selected item from popupmenu1 % --- Executes during object creation, after setting all properties. function popupmenu1_CreateFcn(hObject, eventdata, handles) % hObject handle to popupmenu1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles empty - handles not created until after all CreateFcns called % Hint: popupmenu controls usually have a white background on Windows. % See ISPC and COMPUTER. if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end % --- Executes on button press in pushbutton1. function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % --- Executes on button press in pushbutton2. function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % delete(instrfind({'Port'},{'COM6'})); % puerto_serial = serial('COM6');%查找通信接口对象并断开。 % puerto.serial.BaudRate = 9600;%设置波特率 % warning('off','MATLAB:serial:fscanf:unsuccessfulRead');%关闭警告信息 % fopen(puerto_serial);%打开串口'TimeOut',10 %fprintf('ff'); delete(instrfind({'Port'},{'COM6'})); val_1 = get(handles.popupmenu1,'value'); angle_1 = num2str(handles.edit1.String); switch(val_1) case 2 dir_1 = 's'; case 3 dir_1 = 'l'; end delete(instrfind({'Port'},{'COM6'}));%断开，释放串口对象占用空间 global s;%建立全局变量s s = serial('COM6','BaudRate',9600,'DataBits',8);%设定相关的串口参数 fopen(s); set(s,'BytesAvailableFcnMode','Terminator'); set(s,'Terminator','H'); %设立中断，当串口检测到字符H时触发中断 s.BytesAvailableFcn =@ReceiveCallback; %中断触发后处理回调的事 HH = [dir_1,angle_1,'H']; disp(HH); for k=1:1:3 fprintf(s,HH); pause(0.3);%时间间隔不宜过小 end```
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