How to debug multicore with S32 Design studio

[jingyu]

I set up a new blank project of MPC5748G, use Z4_1 and Z4_2 core.

and debug

is there any configuration missed?

[bhuvaneshwaran]

hi

i am working s32 design studio, how to check the variable values without debugging in s 32 design studio. 

[stanish]

Hi,

I'm not exactly sure what you mean by check variable without debugging.

Perhaps you can try to use FreeMASTER tool to monitor running MCU over JTAG/UART/CAN

FreeMASTER Run-Time Debugging Tool|NXP 

Stan

[martin_kovar]

Hi,

at first, try to add a delay after reset into your main core debug configuration

If it does not help, try to upgrade PE Micro drivers.

Regards,

Martin

[jingyu]

Hi, Martin!

It did fix the power cycle problem! Thank you.

And now I meet another problems. In order to test my SEMA4 driver, I need to use the shared RAM, one core write to the variable placed in shared RAM, the other core read it. But how can I call the same variable in these two multicore project? (Z4_1,Z4_2)

I have seen the MPC5775K example, but the variable declaration way do not work in MPC5748G project, it didn't pass the project build.

Besides, I recognised that the S32 Design Studio can not monitor the registers and variables when doing multicore debug, so that's somewhat difficult to test the demo.

Jing Yu

[martin_kovar]

Hi,

have you correctly configured linker file? Have you created section where is the variable placed? Do not forget you have to modify linker file for both cores.

Can you write me back, what error does compiler report? I think that the code from my example should work, but is important to have correctly configured linker.

About registers and variables, the easiest way how to check the shared variable is look at the memory dump. There you should see, if both cores correctly access to the variable.

Regards,

Martin

[jingyu]

sorry, which is linker file and how to configure it?

I create the section as follows:

in the first core

int shared_int __attribute__((section (".sharedRAM")));

and the second core extern it

extern int shared_int;

and when I call the variable, the error is "undefined referende to 'shared_int'

I recognised that the 5775 example add two underline before the extern variable, like

extern int __shared_int;

whats for these two underline? the error still alive.

Guess it's the linker file tricks.

[martin_kovar]

Hi,

every project has its own linker files. These files define memory map and also determine, where will be stored your code and variables. Linker files are placed in Project_Settings/Linker_Files. Look at my example project and set your linker files in the same way.

Regards,

Martin