TMS320F28379D: Read/write to variables in debug mode from external application (matlab, python, javascript ..)

Luis Martinez

Part Number: TMS320F28379D

Hello everyone, I would like to know what are the options to read/write to variables during debug from an external application on my PC? (matlab, python, java ...) without interrupting the device. I don't need to do it in real-time but at least once each 500 ms will be fine. The details about what I'm trying to do and my limitations are as follows:

I want to read the data from the microcontroller to run a supervisory algorithm on my PC, and when the algorithm finishes, send commands (write/data) to the microcontroller.
I'm using the F28379D with XDS110 in a custom board to execute controllers of power electronics converters. Therefore, I can't allow to have breakpoints or stop the cpu during reading/writing as my application is time critical.
I can't modify the JTAG connection, in this board the connection is fixed, and unfortunately pins to the UART communication are grounded.

I was thinking more into a software solution (PC side) but any insights or suggestions are appreciated. Thanks in advance

over 1 year ago

0 Omer Amir over 1 year ago

TI__Mastermind 30185 points

Hello Luis,

I don't know about the tools you mentioned, but I know that Code Composer Studio lets you read/write global variables during debug mode. While I haven't tried it, you can try to write to a specific variable using the Expressions window while the debug is running and not paused. This should be simple to test on your side, the worst case scenario is that it doesn't write the value. Reading is the same situation.

If you're trying to read/write a large set of data in bulk, you might be able to try Tools > Save/Load Memory from the top menu bar. I'm not sure if it works while executing code which isn't paused, but these are the methods I'm aware of. Anything else you'll likely have to research from other customers/the web.

0 Luis Martinez over 1 year ago in reply to Omer Amir

Prodigy 20 points

Hi Omer,

I'm aware of these options (writing values to the expressions window and the Save Memory option). However, I want to continuously read/write data (500 ms update rate) for at least one hour, and I can't achieve it with those options manually. Thanks for your response!