Problem with project structure | Thales IoT Developer Community

Can you see it now? It's visible for me.

There is no exception or errors, diffrence is just that slave gives no response when I have structured program, but if all files are in the same package it works ok.

Here is part of the code, whole project would be to big.

We have CommunicationManager, which on recived sms reads slave state.

1. CommunicationManager calls method inside ModBusManager:

modbusManager.updateData();

2.updateData method is currently just one line:

public void updateData() throws InterruptedException
    {
        readTemperatures();
    }

3. Read temperatures also currently just have one line:

ReadRegisters(1, 123, 1);

4.ReadRegisters:

openRS232Connection(); //we open port for communication, no exceptions here
        function = 3;
        String msg = Integer.toHexString(0x100 | slaveAdress).substring(1).toUpperCase(); //slave adress
        msg += "03"; //function
        msg += getRegisterAdress(registerAdress);
        msg += getQuantity(registerQuntaity);
        System.out.println("msg before crc " + msg); //here we print msg before crc that will be sent and is correct
        msg += cRC16ModBus.calcCRC(msg); //we add CRC to the end of msg
        try
        {
            outStream.write(JurGem.hexStringToByteArray(msg)); //we send msg
        }
        catch (IOException ex)
        {
            closeRS232Connection(); //on exception we close port, but there is no exception
            System.out.println("Exception in ModBusManager on reading registers: " + ex);
            return null;
        }
        String response = getResponse(); // if no exceptions, we try to read response, but response is allways emptey in structured project
        if(response != null && response.length() > 5) //response ***** to be bigger then 5 to be correct
        {
            closeRS232Connection(); //we close port
            return ReadRegistersResponse(response); //we parse response and return the value
        }
        closeRS232Connection(); //we close port
        return null;

Only diffrence when MIDlet is working and when is not working. That in working situation all files are together in one package. I hope that code is understandable.

EDIT:

You are right. It's probably something else, not the project structure. But I can't hunt down the problem. Some other project works fine, with the implementing modubs class, but the other one mentioned in first post, will not get any response from slave.Even though that slave registers tje call. I will try to find the problem with trying diffrent thigs, becuse it's probably hard for others to help, if they don't have experience with MODbus.

Regards

Jure