IWR6843AOP: Single measurement on Level sensing lab

Julia Sánchez Sánchez

Part Number: IWR6843AOP

Hello,

I'm working with IWR6843AOP, evaluating the chip for an integration on level sensing. I've been studying the level sensing app: UART formats of its outputs (TLV packet), flow of the application, source code in CCS... And I think it would be suitable for my application.

The thing is, whereas this app is programmed to work on a continuous cycle of measurements between the CLI command: "sensorStart " and the CLI command: "sensorStop", I would need it to perform (and output) a single measurement when receiving the CLI command: sensorStart. I've been going through the code and although I think it's possible (and I remember seeing this kind of behaviour in some TI lab, I just can't find the references) I don't know exactly where I should begin modifying the code. Could you help me with that? I'm a FW engineering so coding is no problem. The problem is on the understanding of the application flow.

Best regards and thanks in advance for your time,

Julia Sánchez.

9 months ago

0 Tim Henderson 9 months ago

TI__Expert 7292 points

Hi Julia,

This could be possible, though you would most likely have to resend the configuration every time you want to take a measurement (I assume you would want to take measurements on a higher time scale such as every minute or longer)

The .cfg file that we send down to the device has a command frameCfg, and the 4th parameter in that dictates the number of frames we want to send out (0 is infinite). Most of our labs use 0 because we want to chirp endlessly. You could set this to 1 or some smaller number and collect data, and then resend the .cfg commands later when you would like to take more measurements.

We do something like this in our low power fundamentals lab where we chirp for 1 frame, go to low power mode, then wakeup and repeat. Check it out here: https://dev.ti.com/tirex/explore/node?a=1AslXXD__1.20.00.11&node=A__AOJjAWsYPq56ZxKYYyJH5A__radar_toolbox__1AslXXD__1.20.00.11

Please let us know if you have further questions.

Regards,

Tim

0 Julia Sánchez Sánchez 9 months ago in reply to Tim Henderson

Prodigy 115 points

Hello Tim,

That answers my question perfectly. Thank you very much.

Best regards,

Julia.

Sensors

Sensors forum

IWR6843AOP: Single measurement on Level sensing lab