IWR6843ISK-ODS: The radar has been stopping run sometimes when send message from MSS to DSS.

user5970442

Part Number: IWR6843ISK-ODS

Hi,

I sent the target list information from MSS to DSS in overhead people counting demo. The radar seems crash (no points cloud output from UART port) sometimes. I don't know what's happen. Can you please tell me how to debug this case or give the hint to find out the reason?

_Bool SendInfo2DSS(){
  MmwDemo_message message;
  memset((void *)&message, 0, sizeof(MmwDemo_message));
  message.type = MMWDEMO_MSS2DSS_TARGET_INFO;

  if (MmwDemo_mboxWrite(&message) == 0){
    return 0;
  }else{
    return -1;
  }

}

Thanks.

C.W.

over 5 years ago

0 Akash Gondalia over 5 years ago

TI__Guru 50240 points

Hi C.W.

I've asked an expert to look into this and we should have an answer for you sometime next week.

Cheers,

Akash

0 Justin Curewitz over 5 years ago in reply to Akash Gondalia

TI__Mastermind 28055 points

Hi C.W.

Radar typically crashes for 2 reasons:

Real Time MIPS - the device is on a tight schedule to process the radar data - if it takes too long, the DSS calls an assert, halting execution. If the message function on the DSS side is taking a long time to complete, this could be the reason. If this happened, you would still hear the high-pitched squeaking from the device. An easy check is to increase the frame time.
Memory Allocation - if you allocate memory that isn't available, the device will usually crash. You should see this in debug mode.

It is always helpful to run the device in debug mode, as the console will report the site of the crash.

Regards,

Justin

0 user5970442 over 5 years ago in reply to Justin Curewitz

Expert 1270 points

Hi Justin,

I got the error message in debug mode. I think it's caused by DSS crashed. The DSS can't handle the message "MMWDEMO_MSS2DSS_DETOBJ_SHIPPED". There is no available information in console except "message error" in console.

"[Cortex_R4_0] Error: Mailbox send message id=-18022393 failed"

1. Do you have other suggestions to debug this issue in debug mode?

2. The MSS is alive. Is it possible to restart DSS alone?

MSS

                            memset((void *)&message, 0, sizeof(MmwDemo_message));
                            message.type = MMWDEMO_MSS2DSS_DETOBJ_SHIPPED;
                            if (MmwDemo_mboxWrite(&message) != 0) {
                                System_printf ("Error: Mailbox send message id=%d failed \n", message.type);
                            }

Thanks.

C.W

0 Justin Curewitz over 5 years ago in reply to user5970442

TI__Mastermind 28055 points

HI C.W

Have you defined this message type in both the MSS and DSS? Please check the mailbox initialization to make sure messages can be passed to MSS and to DSS.
You can restart DSS - there is a CPU Reset button in CSS when running debug mode - it looks like a black IC. However, behavior may be undefined, so it is likely that the cores will crash again after this.

Regards,
Justin

0 user5970442 over 5 years ago in reply to Justin Curewitz

Expert 1270 points

Hi Justin,

Have you defined this message type in both the MSS and DSS? Please check the mailbox initialization to make sure messages can be passed to MSS and to DSS.

==> Yes, the message type "MMWDEMO_MSS2DSS_DETOBJ_SHIPPED" is already defined in MSS and DSS. You can find it in overhead people counting demo.

Thanks.

C.W.

0 Justin Curewitz over 5 years ago in reply to user5970442

TI__Mastermind 28055 points

Hi C.W.

Please check the mailbox initialization as well. Ensure that two way communication is enabled.

Regards,

Justin

0 user5970442 over 5 years ago in reply to Justin Curewitz

Expert 1270 points

Hi Justin,

The two way communication is enabled.

Thanks.

C.W.

0 Justin Curewitz over 5 years ago in reply to user5970442

TI__Mastermind 28055 points

Hi C.W.

Please check the location in the DSS where the message is received - it sounds like the DSS is crashing and unable to confirm to the MSS that the message is received.

Regards,

Justin

0 user5970442 over 5 years ago in reply to Justin Curewitz

Expert 1270 points

Hi Justin,

We changed to send the message (MMWDEMO_MSS2DSS_TARGET_INFO) before the message (MMWDEMO_MSS2DSS_DETOBJ_SHIPPED) in MSS part. It works well, not happen crash. Can you please provide more details about the behavior?

    MmwDemo_message message;
    memset((void *)&message, 0, sizeof(MmwDemo_message));
    message.type = MMWDEMO_MSS2DSS_TARGET_INFO;

    if (MmwDemo_mboxWrite(&message) == 0){
        return 0;
    }else{
        return -1;
    }

    ...

    memset((void *)&message, 0, sizeof(MmwDemo_message));
    message.type = MMWDEMO_MSS2DSS_DETOBJ_SHIPPED;
    if (MmwDemo_mboxWrite(&message) != 0) {
        System_printf ("Error: Mailbox send message id=%d failed \n", message.type);
    }

Thanks

C.W.

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IWR6843ISK-ODS: The radar has been stopping run sometimes when send message from MSS to DSS.