File Management

[farshizzo]

From the error you are getting the problem seems to be that you are trying to open the same COM port multiple times, which is failing. Instead of having multiple files for each operation, I would suggest using one file and implementing each operation as a function in the file. This way, you can open the serial port once in the global scope of the file and all the functions can use the existing handle to it.

[Uttama_vizard]

Hello,

Yes, of course that would be the easiest solution. I have tried that out and it works. In fact, if I open and close the COM port multiple times from the same .py file, there is also no error. What, I feel that trying to access the same COM port simultaneously from different files is giving errors due to synchronization problem.

But, my application demands that I use separate .py files and one master .py file for managing the different .py files. I have found out a solution to this and now it is working fine.

What I have done is that I have tried to write in a separate .txt file some message conveying the end of execution of one .py file and then I have tried to access that .txt file, check its contents and when the condition matches, I have made my master .py file to recognize that as an event marker.

Now, it is working fine.

Thanks for your valuable suggestion.

Uttama