How do I send hex command as mmcorej.CharVector to serial port?

Hi All,

I am trying to send a hex message to a light source connected by a usb through the virtual serial port. The source expects an up to 8 byte message, for example 'A9035301A95C' in order to change state. I am trying to communicate with it via Micro Manager adapter for Free Serial Port. Micro Manager command has the following format: setSerialPortCommand(String portLabel, String command, String term) where String command is java.lang.String command.

I tried various forms of the code below, but with no success. I would greatly appreciate any advice on the correct format for the command.

cheers, Maria

function [] = setBrightFieldManual(color,intensity)

global mmc;

comPortScopeLED       = 'COM5';

presetColors                  = {'3000K','4500K','6500K','Red  ','Green','Blue '};  % from manual
colorNumbers                  = {'01','02','03','04','05','06'};
colorMap                      = containers.Map(presetColors,colorNumbers);
intensityHEX                  = dec2hex(intensity);
checkSum                      = dec2hex(2^8-(81+hex2dec(colorMap(color))+intensity));
playPresetColorString         = {'A9','04','4D',colorMap(color),intensityHEX,checkSum,'5C'};
setManualControllerLockoutON  = {'A9','03','53','01','A9','5C'};
setUSBControl                 = {'A9','03','27','03','D3','5C'};
setManualControllerLockoutOFF = {'A9','03','53','00','AA','5C'};
getManualControllerLockout    = {'A9','02','54','AA','5C'};
setAllShuttersOpen            = {'A9','03','55','07','A1','5C'};
mmc.setSerialPortCommand(comPortScopeLED,'A9035301A95C','');  % also tried (comPortScopeLED,'setManualControllerLockoutON','')
mmc.setSerialPortCommand(comPortScopeLED,'A90254AA5C','');
answer=char(mmc.readFromSerialPort(comPortScopeLED));
disp(answer);
mmc.setSerialPortCommand(comPortScopeLED,'setUSBControl','');
mmc.setSerialPortCommand(comPortScopeLED,'setAllShuttersOpen','');
mmc.setSerialPortCommand(comPortScopeLED,'setManualControllerLockoutOFF','');

Answer 1

[Walter Roberson]

h2js = @(hexstring) java.lang.string( char(sscanf(hexstring, '%02x')) )

mmc.setSerialPortCommand(comPortScopeLED, h2js('A9035301A95C'), '');

That is, you need to convert the hex to bytes, and the bytes to java string.

[Maria M.]

Hi Walter,

Thank you very much. The convertation which you suggested works, commands are being sent but device does not recognize them and does not switch the state. I am getting a reply in wrong format: A9034D. It looks like I used the wrong command. setSerialPortCommand sends data as java.lang.String, but I need to send binary data. The correct command for this is writeToSerialPort(String portLabel, CharVector data) but I am again facing the issue of correct convertation. CharVector is a java class from mmcorej package (<http://javadoc.imagej.net/Micro-Manager-Core/)>, which I import. I tried the code below and many other variations

    setManualControllerLockoutON = {'A9','03','53','01', 'A9','5C'};
    hex2jsVector = @(hexstring) mmcorej.CharVector(char(hex2dec(hexstring)));
    mmc.writeToSerialPort(comPortScopeLED,hex2jsVector(setManualControllerLockoutON));

This code returns "No constructor 'mmcorej.CharVector' with matching signature found."

However, if I try to create an empty object, it works:

   CharVecObjEmpty = javaObject('mmcorej.CharVector');

I would really appreciate any suggestions.

The following code works with fwrite command:

    setManualControllerLockoutON = hex2dec({'A9','03','53','01', 'A9','5C'});
    if exist ('s')
    fclose (s)
    delete (s)
    clear s
    end
s = serial ('COM5','BaudRate',115200);
fopen (s);
fwrite(s,setManualControllerLockoutON);
fclose (s)

Best, Maria

Answer 2

[Maria M.]

Problem solved. The correct command is writeToSerialPort. Here is working example (requires imported mmcorej):

setUSBControl    = hex2dec({'A9','03','27','03','D3','5C'});;
ChVsetUSBControl = mmcorej.CharVector();
for k=1:length(setUSBControl)
  ChVsetUSBControl.add(char(setUSBControl(k)));
end
mmc.writeToSerialPort(comPortScopeLED,ChVsetUSBControl);
pause(1);