IWR6843ISK: IWR6843ISK output format

Kai Yang1

Part Number: IWR6843ISK
Other Parts Discussed in Thread: MMWAVE-SDK

Is the output format dependent on the version of SDK? For example, the header format in the latest SDK is shown below, which is very different from the format provided in the lab of 68xx ISK people counting.

typedef struct MmwDemo_output_message_header_{

uint16_t magicWord[4]

uint32_t version;

uint32_t totalPacketLen;

uint32_t platform;

uint32_t frameNumber;

uint32_t timeCpuCycles;

uint32_t numDetectedObj;

uint32_t numTLVs;

uint32_t subFrameNumber;

} MmwDemo_output_message_header;

Also, would you please let me know the output format in the SDK 3.1 and 3.2?

Thanks!

Kai

over 5 years ago

0 Vaibhav Mahimkar over 5 years ago

TI__Mastermind 23725 points

Hello Kai.

Output format of the data from the mmWave devices depend on which demo/code is running on device.

In case of Out of Box demos the data format is explained in the respective mmwave SDK User's guide. FOr demo available as part of TIrex releases eg. Industrial Tool Box labs have explanation for data format in the users' guide of those demos.

For older versions of SDK please browse from the latest SDK page to find previous release and navigate to the required version. The USer's gudie for each version covers the output format.

http://www.ti.com/tool/MMWAVE-SDK

Thank you,
Vaibhav

0 Kai Yang1 over 5 years ago in reply to Vaibhav Mahimkar

Expert 1400 points

Hi Vaibhav

Thanks for your quick reply.

The output format described in People Counting/68xx-ISK People Counting (dev.ti.com/.../node is very different from the following one I found in the latest mmwave-sdk. Would you please check which one is the correct one?

typedef struct MmwDemo_output_message_header_{

uint16_t magicWord[4]

uint32_t version;

uint32_t totalPacketLen;

uint32_t platform;

uint32_t frameNumber;

uint32_t timeCpuCycles;

uint32_t numDetectedObj;

uint32_t numTLVs;

uint32_t subFrameNumber;

} MmwDemo_output_message_header;

Thanks!

Kai

0 Nitin Sakhuja over 5 years ago in reply to Kai Yang1

TI__Mastermind 30405 points

Hi Kai,

As Vaibhav mentioned, the format of the output data stream coming from the mmWave device depends upon the demo (i.e. software) running on the device.

1. If you flash the SDK Out of Box demo, the data format defined in SDK html documentation (i.e. MmwDemo_output_message_header structure) is applicable.

2. The People Counting Demo is a different piece of software and hence has it's own output message header which is defined in the 68xx ISK - People Counting Demo user guide. Please scroll down to the section named Data Formats and you will find the message header structure for this particular software as shown below. Please read this section to understand how to decode the output data stream for this demo.

Hope this clarifies.

Regards

-Nitin

0 Kai Yang1 over 5 years ago in reply to Nitin Sakhuja

Expert 1400 points

Hi Nitin

Thanks for your reply!

It makes more sense to me now. Did you mean there are actually two different formats of output data, one format is only for people counting (the one you attached above) and the other format (defined in sdk html documentation) works for the other labs?

Thanks!

Kai

0 Nitin Sakhuja over 5 years ago in reply to Kai Yang1

TI__Mastermind 30405 points

Hi Kai,

"Did you mean there are actually two different formats of output data, one format is only for people counting (the one you attached above) and the other format (defined in sdk html documentation) works for the other labs?"

Correct, not only does the people counting lab has it's own data format, but all other labs have their respective data formats as defined in the corresponding lab user guide. The format defined in the SDK html documentation is applicable only to the SDK out of box demo (i.e. the mmw demo).

Thanks

-Nitin

0 Kai Yang1 over 5 years ago in reply to Nitin Sakhuja

Expert 1400 points

Hi Nitin

Thanks for all your detailed explanation. I have a much better understanding now.

Thanks!

Kai

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IWR6843ISK: IWR6843ISK output format