TDA4VM: About TDA4 SOC & PSDKRA Development of Inter-Processor Communication

Hi Nick,

Yes, it will work. We have usecases using nodes from different cores. Frameworks takes care of communication link among cores.

Regards,

Brijesh

Hi Brijesh,

thank for your reply，and can you share the usecase for me which designed for Node communication with parallel data flow?

• if the sender is A72-NODE or C66-NODE or C7x-Node，please show me the IPC interface that i needed.
• At the OpenVX framework ,what are the considerations in parallel node communication?

Hi Nick,

As i said, you just write the node and add/register it for A72 or C66x. Now whenever application uses this node, by default, it will use this registered core and will also take care of IPC.

You could refer to single channel camera example or AVP demo example in vision apps

Regards,

Brijesh

Hi Brijesh,

As your suggestion, Base on AVP Demo ,I have a test in emulation mode(Linux x86_64),but i get the result :Segmentation fault (core dumped),Please tell me the cause of the problem,thanks.

my test code as follows:

at~\vision_apps\apps\dl_demos\app_tidl_avp\main.c

find app_run_graph func,and add code in sub-frameloops,just behind tivxTaskWaitMsecs func

#ifdef APP_DEBUG
printf("app_avp: Frame ID %d of %d ... Done.\n", frame_id, obj->start_frame + obj->num_frames);
#endif

/* test code start */

scalerObj = &obj->scalerObj;

refs[0] = (vx_reference)scalerObj->coeff_obj;

status = tivxNodeSendCommand(scalerObj->node, 0u,
TIVX_VPAC_MSC_CMD_SET_COEFF,
refs, 1u);

if(VX_SUCCESS != status)
{
printf("MSC: Node send command failed!\n");
}

/* test code end */

and if the command is not right，please show me the right command which can i test node communication，thanks.