VC0706 image reading

Question

Daniel 2016-5-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/284454-vc0706-image-reading

编辑： Walter Roberson 2016-5-16

Hello All,

I am trying to connect to a vc0706 camera through a usb com port.

Currently I got the following code (found on the internet) , but I can't seem to find the way to read the jpg image from the camera (I am getting a string rather than an image).

Anyone got ideas?

s=serial('com12','baudrate',38400);
set(s,'timeout',10);
%Open serial port
fopen(s);
%Stop FBUFFER
protocolsign=hex2dec('56');
serialnumber=hex2dec('00');
command=hex2dec('36');
datalength=hex2dec('01');
data=hex2dec('00');
fwrite(s,protocolsign,'uint8');
fwrite(s,serialnumber,'uint8');
fwrite(s,command,'uint8');
fwrite(s,datalength,'uint8');
fwrite(s,data,'uint8');
%arret=fread(s,5)
%Get Fbuffer_Length
protocolsign=hex2dec('56');
serialnumber=hex2dec('00');
command=hex2dec('34');
%datalength=hex2dec('00');
datalength=hex2dec('01');%
data=hex2dec('00');%
fwrite(s,protocolsign,'uint8');
fwrite(s,serialnumber,'uint8');
fwrite(s,command,'uint8');
fwrite(s,datalength,'uint8');
fwrite(s,data,'uint8');%
taille = fread(s,9);
newtaille=hex2dec(dec2hex(256*taille(8)+taille(9)))+100;
%Close serial port
fclose(s);
%Adjust Input buffer size to that of the image
set(s,'inputbuffersize',newtaille);
%Reopen Serial port
fopen(s);
%Read FBUF
protocolsign=hex2dec('56');
serialnumber=hex2dec('00');
command=hex2dec('32');
datalength=hex2dec('0c');
data=hex2dec([ '00' ; '0a'; '00'; '00'; '00'; '00'; '00'; '00'; dec2hex(taille(8)); '00' ; 'ff' ;'ff']);
%data=hex2dec([ '00' ; '0a'; '00'; '00'; dec2hex(taille(8)); dec2hex(taille(8)); '00'; '00'; '00'; '00'; '00' ;'0a']);%
fwrite(s,protocolsign,'uint8');
fwrite(s,serialnumber,'uint8');
fwrite(s,command,'uint8');
fwrite(s,datalength,'uint8');
fwrite(s,data,'uint8');
B=fread(s,5); %getting response from camera
if B(4)==0 % If status byte is "0"="success"'yeah' %be happy :)
C=fread(s); %read data
end
%Resume FBUFFER
protocolsign=hex2dec('56');
serialnumber=hex2dec('00');
command=hex2dec('36');
datalength=hex2dec('01');
data=hex2dec('02');
fwrite(s,protocolsign,'uint8');
fwrite(s,serialnumber,'uint8');
fwrite(s,command,'uint8');
fwrite(s,datalength,'uint8');
fwrite(s,data,'uint8');
fread(s,5)
%Close serial port
fclose(s);