Setting task affinity on c6657

Javier Eroles

Hi everyone,

I want to create 2 tasks on C6657, one on each core, by setting its affinity. I tried to set it bydefinning a task handler for each, initialising their parameters and checling them with the get() methods for tasks, like this (for tsk1 should be the same, but setting another affinity, dstProc):

Task_Handle tsk0;
Task_Params task0Params;
Error_Block eb0;
Task_Mode tsk0md;
UInt affinity0;

Task_Params_init(&task0Params);
Error_init(&eb0);
task0Params.stackSize = 512;
task0Params.priority = 1;
task0Params.affinity = srcProc;
tsk0 = Task_create((Task_FuncPtr)tsk0_func, &task0Params, &eb0);

tsk0md = Task_getMode(tsk0);
affinity0 = Task_getAffinity(tsk0);

After building the project I found out that it does not recognise the method getAffinity(), but there is no problem with getMode().

Why this does not work? Why I am missing from the configuration of the task?

Thanks in advance

JaviEr

over 11 years ago

0 Raja over 11 years ago

TI__Guru* 81335 points

Hi JaviEr,

Moved this thread to TI-RTOS(BIOS) Forum.

Please provide SYS/BIOS, CCS Version and package used.

Thanks.

0 Javier Eroles over 11 years ago in reply to Raja

Intellectual 430 points

Ok Thanks.

SYS/BIOS version and package is 6_37_00_20

CCS 5.1.1.00031

0 Ashish Kapania over 11 years ago in reply to Javier Eroles

TI__Mastermind 21645 points

Hi Javier,

Task_getAffinity() and Task_setAffinity() APIs are only supported when BIOS.smpEnabled is set to true i.e. BIOS is running in SMP mode. C6x devices currently do not support SMP mode so unfortunately you will not be able to use these 2 APIs in your project.

Best,

Ashish

0 Javier Eroles over 11 years ago in reply to Ashish Kapania

Intellectual 430 points

Thanks!

In that case what I was thinking in splitting the single image in two images instead. My only concern is how can I synchronize the two cores if I load two images separately. Can I still use the Notify messages to tell the second core that new fresh data is available from the first core in the shared memory? Do I need to configure in a certain way the .cfg files of the two applications?

Thanks again in advance!

JaviEr

0 Ashish Kapania over 11 years ago in reply to Javier Eroles

TI__Mastermind 21645 points

Hi Javier,

Have you tried out the C6678 example from the IPC product ? It is a multi-core C6678 example that you should be able to adapt to make it work for C6657. The C6678 example in the latest IPC product (IPC 3.x) uses MessageQ but you can replace it with Notify APIs.

Best,

Ashish

0 Javier Eroles over 11 years ago in reply to Ashish Kapania

Intellectual 430 points

Thanks for your answer, but I dont really understand how to apply it to my application. I will open another thread to explain more in deep the problem.

Processors

Processors forum

Setting task affinity on c6657