Debugging when the program is in flash

Hi Monica,

Instead of reflashing the whole programe you can just load the Symbols. Connect to the target -> Menu Target -> Load Symbols -> choose the out file that corresponds to the program on the target.

Hope this helps

Best regards

Andreas

Thanks!

I was just back to write that I've solved the problem. In the mean I read that I must load the symbols. It works, but still I have to use Scripts-> reset. For the actual stage of the development this is not so bad, but normally I will need to connect and just monitor some variables, without resetting the system. I'll try more and read more.

Thanks again!

Monica

Monica,

Would you have the possibility to use any serial interface as debug interface? I think this would be the best. I am not 100% sure, but I think it is not possible to connect to a target via JTAG without resetting the device...

Regards

Andreas

That will not be good for me.. :(

I don't know now about the serial interface.

Thanks Andreas!

Monica

Monica,

Which CCS Version do you use? If it is CCSV4 then you can change the debugger settings in order to avoid a reset at target connection. Go to "Project"->"Properties"->"CCS Debug".

I've checked now, I have the same settings...

But under debugger options, I have load program checked. Should I try load symbols only?

Hi again!

I'm trying again to monitor some variables while the code is running in the flash. After I connect and load symbols, I can see the status of the variables, but I don't see them changing (it's the ADC input, it must change). I also have a LED on the board that is set to toggle while the program is running and this stops when I connect to the board.  Can you help me with this?

Thanks a lot,

Monica

Monica,

You need to use real time mode option to see the status of the variable change on fly.

Reference: Real-Time Mode Debug with CCStudio (CCSv3.3)

                     Tutorial for Realtime mode for C2000

                     Real-Time Mode Debug with CCStudio

Hope this helps.

Regards,

Manoj

It looks the links i sent weren't working.

Real-Time Mode Debug with CCStudio - http://processors.wiki.ti.com/index.php/Real-Time_Mode_Debug_with_CCStudio

Real-Time Mode Debug with CCStudio  http://processors.wiki.ti.com/index.php/C2000_Getting_Started_with_Code_Composer_Studio_v4#Enable_real-time_mode_to_monitor_the_watch_variables_as_they_are_changing

Regards,

Manoj

Thanks for the links!

But what can I do when  I don't have that option?

Monica,

You must be connected to your target, and the target must be in "halt" before you can enable Realtime mode!

Best regards

Andreas

Monica,

Andreas is right, you need to be connected to target before you can enable real time mode.

-Manoj

Thanks a lot guys!

I've finally made it work. Please tell me if I got it right. When I connect the board, it is put in halt until I load symbols, set the int1 bit in DBGIER register, enable real-time mode and hit RUN. If I halt and run again, as I observed, it is not reset, the execution continues from where it was suspended.

And I have just one more question. In the debug session I always get 2 devices, or what they are? When I used Target -> Connect, I've always got an error in the console windows and nothing was working, I couldn't restart the board, it was in halt forever.

If I connect just the the one with C28xx it's working. But why the CLA_0 always appear. I've deleted it from Target-> Debug... -> Non-project Debug Session,  but it appeared again. It's not that I cannot work with it, but I'd like to understand it. 

Thanks again,

Monica

Monica,

It is not necassary to configure Debug Interrupt Enable Register (DBGIER) to enter real time mode.

Procedure to enter real time mode:

 Coming to your second question, Piccolo B has 2 cores (C28x and 32bit floating point math accelator called 'CLA'). That is the reason why you get two devices in your debug session. You can get connected to either C28x (or) CLA. It depends upon what you want to work with. So, if you don't want to work with CLA, just connect yourself to C28x and ignore CLA. You don't need to delete CLA.

Hope this helps.

Regards,

Manoj

Hi!

Thanks!

I've seen in the meantime it's not necessary, that's how I got it first from a video explaining this. Actually, when the board is connected with all the rest of the hardware, I get some error when I try to write that bit. Strange, cause when it's just the board this doesn't happen. 

Thanks for the second answer too! I work also with CLA, but I don't want to debug that part of code.

Monica

Monica,

Good to know that you problems have the resolved. :)

In future, if you have any further questions, I would recommend you to post the question in new thread rather than using the same thread.

Regards,

Manoj