IWR6843ISK: way to wake up external SoC

Takatoshi Tsuji

Expert 1550 points

Part Number: IWR6843ISK
Other Parts Discussed in Thread: IWR6843

Hello ,

I would like to have a way to wake up external SoC once target is detected by IWR6843.

This way may make to sleep SoC for reducing power consumption during detection.

Please share application note to understand how to realize if it is possible to do.

with best regards,

over 5 years ago

0 Yogesh Siraswar over 5 years ago

TI__Mastermind 20715 points

Hi Takatoshi Tsuji,

Need some more information before we can provide any solution.

1) How is the target identified in your application.

2) Are you doiing any post processing on the point cloud outside the IWR6843 device.

3) How is the the external SOC connected to IWR6843.

4) Can you use GPIO from IWR6843 as wake-up source for external SOC.

Thanks

Yogesh

0 Takatoshi Tsuji over 5 years ago in reply to Yogesh Siraswar

Expert 1550 points

Hello Yogesh,

1) How is the target identified in your application.

TT) I suppose new quick algorithm is required if interrupt_RQ to wake up external SoC will be implemented.

2) Are you doiing any post processing on the point cloud outside the IWR6843 device.

TT) I suppose no processing required for interrupt_RQ.

3) How is the the external SOC connected to IWR6843.

TT) Normally GPIO is used.

4) Can you use GPIO from IWR6843 as wake-up source for external SOC.

TT) Yes, one of GPIO can be configured for this purpose.

with best regards,

0 Yogesh Siraswar over 5 years ago in reply to Takatoshi Tsuji

TI__Mastermind 20715 points

Hi Takatoshi Tsuji,

Yes, you can use GPIO to trigger external wake-up. You can look into GPIO test code @C:\ti\mmwave_sdk_03_03_00_03\packages\ti\drivers\gpio\test\xwr68xx

for reference. You need to come with your own algorithm to detect the target from the point cloud and trigger wake-up event.

Thanks

Yogesh

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IWR6843ISK: way to wake up external SoC