matlab读取图像并用串口发送

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1、function varargout = serial_communication2(varargin)gui_Singleton = 1;gui_State = struct(gui_Name, mfilename, . gui_Singleton, gui_Singleton, . gui_OpeningFcn, serial_communication2_OpeningFcn, . gui_OutputFcn, serial_communication2_OutputFcn, . gui_LayoutFcn, , . gui_Callback, );if nargin & ischar(

2、varargin1) gui_State.gui_Callback = str2func(varargin1);endif nargout varargout1:nargout = gui_mainfcn(gui_State, varargin:);else gui_mainfcn(gui_State, varargin:);endfunction serial_communication2_OpeningFcn(hObject, eventdata, handles, varargin)handles.output = hObject;warning(off);javaFrame = get

3、(hObject, JavaFrame);javaFrame.setFigureIcon(javax.swing.ImageIcon(icon.jpg);% 初始化参数hasData = false; %表征串口是否接收到数据isShow = false; %表征是否正在进行数据显示，即是否正在执行函数dataDispisStopDisp = false; %表征是否按下了【停止显示】按钮isHexDisp = false; %表征是否勾选了【十六进制显示】isHexSend = false; %表征是否勾选了【十六进制发送】numRec = 0; %接收字符计数numSend = 0; %发

4、送字符计数strRec = ; %已接收的字符串% 将上述参数作为应用数据，存入窗口对象内setappdata(hObject, hasData, hasData);setappdata(hObject, strRec, strRec);setappdata(hObject, numRec, numRec);setappdata(hObject, numSend, numSend);setappdata(hObject, isShow, isShow);setappdata(hObject, isStopDisp, isStopDisp);setappdata(hObject, isHexDi

5、sp, isHexDisp);setappdata(hObject, isHexSend, isHexSend);guidata(hObject, handles);function varargout = serial_communication2_OutputFcn(hObject, eventdata, handles) varargout1 = handles.output;function com_Callback(hObject, , handles)function com_CreateFcn(hObject, eventdata, handles)if ispc & isequ

6、al(get(hObject,BackgroundColor), get(0,defaultUicontrolBackgroundColor) set(hObject,BackgroundColor,white);endfunction rate_Callback(hObject, eventdata, handles)function rate_CreateFcn(hObject, eventdata, handles)if ispc & isequal(get(hObject,BackgroundColor), get(0,defaultUicontrolBackgroundColor)

7、set(hObject,BackgroundColor,white);endfunction jiaoyan_Callback(hObject, eventdata, handles)function jiaoyan_CreateFcn(hObject, eventdata, handles)if ispc & isequal(get(hObject,BackgroundColor), get(0,defaultUicontrolBackgroundColor) set(hObject,BackgroundColor,white);endfunction data_bits_Callback(

8、hObject, eventdata, handles)function data_bits_CreateFcn(hObject, eventdata, handles)if ispc & isequal(get(hObject,BackgroundColor), get(0,defaultUicontrolBackgroundColor) set(hObject,BackgroundColor,white);endfunction stop_bits_Callback(hObject, eventdata, handles)function stop_bits_CreateFcn(hObje

9、ct, eventdata, handles)if ispc & isequal(get(hObject,BackgroundColor), get(0,defaultUicontrolBackgroundColor) set(hObject,BackgroundColor,white);endfunction start_serial_Callback(hObject, eventdata, handles)% 【打开/关闭串口】按钮的回调函数% 打开串口，并初始化相关参数% 若按下【打开串口】按钮，打开串口if get(hObject, value) % 获取串口的端口名 com_n =

10、sprintf(com%d, get(, value); % 获取波特率 rates = 1200 2400 4800 9600 19200 38400 43000 56000 57600 115200 921600 1036800; baud_rate = rates(get(handles.rate, value); % 获取校验位设置 switch get(handles.jiaoyan, value) case 1 jiaoyan = none; case 2 jiaoyan = odd; case 3 jiaoyan = even; end % 获取数据位个数 data_bits =

11、 5 + get(handles.data_bits, value); % 获取停止位个数 stop_bits = get(handles.stop_bits, value); % 创建串口对象 scom = serial(com_n); % 配置串口属性，指定其回调函数 set(scom, BaudRate, baud_rate, Parity, jiaoyan, DataBits,. data_bits, StopBits, stop_bits,InputBufferSize,1638400, OutputBufferSize,1638400,BytesAvailableFcnCount,

12、 10,. BytesAvailableFcnMode, byte, BytesAvailableFcn, bytes, handles,. TimerPeriod, 0.05, timerfcn, dataDisp, handles); % 将串口对象的句柄作为用户数据，存入窗口对象 set(handles.figure1, UserData, scom); % 尝试打开串口 try fopen(scom); %打开串口 catch % 若串口打开失败，提示“串口不可获得！” msgbox(串口不可获得！); set(hObject, value, 0); %弹起本按钮 return; en

13、d % 打开串口后，允许串口发送数据，清空接收显示区，点亮串口状态指示灯， % 并更改本按钮文本为“关闭串口” set(handles.period_send, Enable, on); %启用【自动发送】按钮 set(handles.manual_send, Enable, on); %启用【手动发送】按钮 set(handles.xianshi, string, ); %清空接收显示区 set(handles.activex1, value, 1); %点亮串口状态指示灯 set(hObject, String, 关闭串口); %设置本按钮文本为“关闭串口”else %若关闭串口 % 停止

14、并删除定时器 t = timerfind; if isempty(t) stop(t); delete(t); end % 停止并删除串口对象 scoms = instrfind; stopasync(scoms); fclose(scoms); delete(scoms); % 禁用【自动发送】和【手动发送】按钮，熄灭串口状态指示灯 set(handles.period_send, Enable, off, value, 0); %禁用【自动发送】按钮 set(handles.manual_send, Enable, off); %禁用【手动发送】按钮 set(handles.activex

15、1, value, 0); %熄灭串口状态指示灯endfunction dataDisp(obj, event, handles)global value%串口的TimerFcn回调函数% 串口数据显示% 获取参数hasData = getappdata(handles.figure1, hasData); %串口是否收到数据strRec = getappdata(handles.figure1, strRec); %串口数据的字符串形式，定时显示该数据numRec = getappdata(handles.figure1, numRec); %串口接收到的数据个数% 若串口没有接收到数据，先

16、尝试接收串口数据if hasData bytes(obj, event, handles);end% 若串口有数据，显示串口数据if hasData % 给数据显示模块加互斥锁 % 在执行显示数据模块时，不接收串口数据，即不执行BytesAvailableFcn回调函数 setappdata(handles.figure1, isShow, true); set(handles.xianshi, string, strRec); % 更新接收计数 set(handles.rec,string, numRec); % 更新hasData标志，表明串口数据已经显示 setappdata(handl

17、es.figure1, hasData, false); % 给数据显示模块解锁 setappdata(handles.figure1, isShow, false);end function bytes(obj, , handles)% 串口的BytesAvailableFcn回调函数% 串口接收数据% 获取参数strRec = getappdata(handles.figure1, strRec); %获取串口要显示的数据numRec = getappdata(handles.figure1, numRec); %获取串口已接收数据的个数isStopDisp = getappdata(ha

18、ndles.figure1, isStopDisp); %是否按下了【停止显示】按钮isHexDisp = getappdata(handles.figure1, isHexDisp); %是否十六进制显示isShow = getappdata(handles.figure1, isShow); %是否正在执行显示数据操作% 若正在执行数据显示操作，暂不接收串口数据if isShow return;end% 获取串口可获取的数据个数n = get(obj, BytesAvailable);% 若串口有数据，接收所有数据if n % 更新hasData参数，表明串口有数据需要显示 setappd

19、ata(handles.figure1, hasData, true); % 读取串口数据 a = fread(obj, n, uchar); % 若没有停止显示，将接收到的数据解算出来，准备显示 if isStopDisp % 根据进制显示的状态，解析数据为要显示的字符串 if isHexDisp c = char(a); else strHex = dec2hex(a); strHex2 = strHex; blanks(size(a, 1); c = strHex2(:); end % 更新已接收的数据个数 numRec = numRec + size(a,1); % 更新要显示的字符串

20、 strRec = strRec c; end % 更新参数 setappdata(handles.figure1, numRec, numRec); %更新已接收的数据个数 setappdata(handles.figure1, strRec, strRec); %更新要显示的字符串endfunction qingkong_Callback(hObject, eventdata, handles)% 清空要显示的字符串setappdata(handles.figure1, strRec, );% 清空显示set(handles.xianshi, String, );function stop

21、_disp_Callback(hObject, eventdata, handles)% 根据【停止显示】按钮的状态，更新isStopDisp参数if get(hObject, Value) isStopDisp = true;else isStopDisp = false;endsetappdata(handles.figure1, isStopDisp, isStopDisp);function hex_disp_Callback(hObject, eventdata, handles)% 根据【十六进制显示】复选框的状态，更新isHexDisp参数if get(hObject, Valu

22、e) isHexDisp = true;else isHexDisp = false;endsetappdata(handles.figure1, isHexDisp, isHexDisp);function manual_send_Callback(hObject, eventdata, handles)scom = get(handles.figure1, UserData);numSend = getappdata(handles.figure1, numSend);val = get(handles.sends, UserData);numSend = numSend + length

23、(val);set(handles.trans, string, num2str(numSend);setappdata(handles.figure1, numSend, numSend);% 若要发送的数据不为空，发送数据if isempty(val) % 设置倒计数的初值 n = 2000000; while n % 获取串口的传输状态，若串口没有正在写数据，写入数据 str = get(scom, TransferStatus); if (strcmp(str, write) | strcmp(str, read&write) fwrite(scom, val, uint8, asyn

24、c); %数据写入串口 break; end n = n - 1; %倒计数 endendfunction clear_send_Callback(hObject, eventdata, handles)% 清空发送区set(handles.sends, string, )% 更新要发送的数据set(handles.sends, UserData, );function period_send_Callback(hObject, eventdata, handles)% 【自动发送】按钮的Callback回调函数% 若按下【自动发送】按钮，启动定时器；否则，停止并删除定时器if get(hOb

25、ject, value) t1 = 0.001 * str2double(get(handles.period1, string);%获取定时器周期 t = timer(ExecutionMode,fixedrate, Period, t1, TimerFcn,. manual_send_Callback, handles); %创建定时器 set(handles.period1, Enable, off); %禁用设置定时器周期的Edit Text对象 set(handles.sends, Enable, inactive); %禁用数据发送编辑区 start(t); %启动定时器else

26、set(handles.period1, Enable, on); %启用设置定时器周期的Edit Text对象 set(handles.sends, Enable, on); %启用数据发送编辑区 t = timerfind; %查找定时器 stop(t); %停止定时器 delete(t); %删除定时器end%function period1_Callback(hObject, eventdata, handles)function period1_CreateFcn(hObject, eventdata, handles)if ispc & isequal(get(hObject,Ba

27、ckgroundColor), get(0,defaultUicontrolBackgroundColor) set(hObject,BackgroundColor,white);endfunction clear_count_Callback(hObject, eventdata, handles)% 计数清零，并更新参数numRec和numSendset(handles.rec, handles.trans, string, 0)setappdata(handles.figure1, numRec, 0);setappdata(handles.figure1, numSend, 0);fu

28、nction copy_data_Callback(hObject, eventdata, handles)% 设置是否允许复制接收数据显示区内的数据if get(hObject,value) set(handles.xianshi, enable, on);else set(handles.xianshi, enable, inactive);endfunction figure1_CloseRequestFcn(hObject, eventdata, handles)% 关闭窗口时，检查定时器和串口是否已关闭% 若没有关闭，则先关闭% 查找定时器t = timerfind;% 若存在定时器

29、对象，停止并关闭if isempty(t) stop(t); %若定时器没有停止，则停止定时器 delete(t);end% 查找串口对象scoms = instrfind;% 尝试停止、关闭删除串口对象try stopasync(scoms); fclose(scoms); delete(scoms);end% 关闭窗口delete(hObject);function hex_send_Callback(hObject,eventdata, handles)% 根据【十六进制发送】复选框的状态，更新isHexSend参数if get(hObject,value) isHexSend = tr

30、ue;else isHexSend = false;endsetappdata(handles.figure1, isHexSend, isHexSend);% 更新要发送的数据sends_Callback(handles.sends, eventdata, handles);function sends_Callback(hObject,eventdata, handles)% 数据发送编辑区的Callback回调函数% 更新要发送的数据% 获取数据发送编辑区的字符串str = get(hObject, string);% 获取参数isHexSend的值isHexSend = getappd

31、ata(handles.figure1, isHexSend);if isHexSend %若为ASCII值形式发送，直接将字符串转化为对应的数值 val = double(str);else %若为十六进制发送，获取要发送的数据 n = find(str = ); %查找空格 n =0 n length(str)+1; %空格的索引值 % 每两个相邻空格之间的字符串为数值的十六进制形式，将其转化为数值 for i = 1 : length(n)-1 temp = str(n(i)+1 : n(i+1)-1); %获得每段数据的长度，为数据转换为十进制做准备 if rem(length(tem

32、p), 2) bi = reshape(temp, 2, ); %将每段十六进制字符串转化为单元数组 else break; end end val = hex2dec(b); %将十六进制字符串转化为十进制数，等待写入串口end% 更新要显示的数据set(hObject, UserData, val); % - Executes on button press in open.function open_Callback(hObject, eventdata, handles)name,path=uigetfile(*.*,);file=path,name;axes(handles.axes

33、l);x=imread(file);handles.img=x;guidata(hObject,handles);imshow(x);IM2=imread(file);row,col,h=size(IM2);red=IM2(:,:,1);red1=uint16(red);red2=bitshift(red1,-3);red=bitshift(red2,11);test1=dec2bin(red(1);green=IM2(:,:,2);green1=uint16(green);green2=bitshift(green1,-2);green=bitshift(green2,5);test2=de

34、c2bin(green(1);blue=IM2(:,:,3);blue1=uint16(blue);blue2=bitshift(blue1,-3);blue=blue2;test3=dec2bin(blue(1);IM3=red+green+blue;n,m=size(IM3);im=zeros(n,2*m);fid=fopen(image.txt,w);for ii=1:n for jj=1:m temp=dec2hex(IM3(ii,jj),4); fprintf(fid,%s %s ,temp(1:2),temp(3:4); end % fprintf(fid,r);endfclose(fid);%以只读、文本方式打开文本文件fid=fopen(image.txt,rt);a1=fread(fid);%将文本字符ASCII值转换为字符串a2=char(a1);%把文本中图像数据显示在输入窗口set(handles.sends,string,a2);%每次打开图像就更新要发送的数据sends_Callback(handles.sends, eventdata, handles);