IWR1843BOOST: iwr1843 external triggering

Hi Siddesh,

Can you clarify triggering in which regard?

Regards,

AG

Hi,

We want to control  frame origin time using  the external TTL   pulse,  as in the  case of some other boards.(https://e2e.ti.com/support/sensors/f/1023/t/855101).

how to configure the iwr1843 for external hardware trigger and to which pin we have to apply TTL pulse or can you specify external digital pulse specification.

We need this info bz we are planning to use multiple iwr1843 

thanks and regards

Siddesh

Hi Siddesh,

As stated in the thread above, the external trigger is supported through MMWAVELINK API.

To configure the external trigger on 1843EVM, you need to connect the pulse to SYNC_IN

To connect to SYNC_IN, Please refer to https://www.ti.com/lit/ug/spruim4a/spruim4a.pdf

a) 60 pin HD connector ( Refer section 2.3.2)

 OR

b) 20-Pin BoosterPack Connectors  J6 ( Refer section 2.3.1)

If you want one of the board to be master,  please check out MCUCLK OUT.

Attaching reference image where J5/J6 connector is used to connect two 1843 devices:

Thanks

Yogesh

Hi Yogesh,

It is mentioned in MMWAVE SDK User Guide at  page 24  file:///C:/ti/mmwave_sdk_03_03_00_03/docs/mmwave_sdk_user_guide.pdf

only option for software trigger is supported  out of 1 software trigger and 2 hardware trigger 

thanks and regards

Hi Siddesh,

As I mentioned this is supported in front-end module mmwavelink:

C:\ti\mmwave_sdk_03_03_00_03\packages\ti\control\mmwavelink\

There will be changes required in the SDK demo to support this. 

Thanks

Yogesh

Dear Yogesh,

Since front end module is supported for external hardware trigger,

Do  we  have to edit mmwave sdk 3.3 demo code such a way that  external hard ware trigger also supported  or  incorporated.

regards

Siddesh 

Hi Siddesh,

Yes, changes may be required. 

Thanks

Yogesh

Dear Yogesh,

one last question.

Do you agree that  mmwave sdk 3.3 demo code   does not support external hard ware trigger for iwr1843. 

thanks and regards

Siddesh 

Siddesh,

Yes, mmwave sdk 3.3 supports only software triggering. You need to make changes for Hardware triggering.

Thanks

Yogesh