IWR6243: Cascade Configuration gets stuck on RF Init

Tim Teuber

Part Number: IWR6243

Tool/software:

Hi Team,

i am currently working on writing a Configuration Software for the IWR6243 on a Linux based Host System. I am using a custom Radar System with 2 Cascaded IWR6243, which get controlled with I2C. I managed to get to the point of RF Initialization (meaning i could power on master and slave, power on rf subpart for both and could perform the following configurations for both devices: channel, adc, low power, datapath, dataformat, datapath clock, hsi clock, hsi clock and csi-2). When my software reaches the point of RF Initialization, it fails while trying to write the I2C Message for Configuration.

What could be the issue with this.

Best regards,

Tim

10 months ago

0 Santosh Krishnan 10 months ago

TI__Mastermind 18980 points

Hello Tim.

Are you writing your own software or basing it off existing TI code?

Sincerely,

Santosh

0 Tim Teuber 10 months ago in reply to Santosh Krishnan

Intellectual 390 points

Hello Santosh,

i am writing my own software, but its roughly based on the mmWave Link Cascade Example

Best regards,

Tim

0 Tim Teuber 10 months ago in reply to Tim Teuber

Intellectual 390 points

Hello Santosh,

i did some further investigation. It seems like both Devices are being Shutdown after calling RF Init for Master. Apperently, they perform a self reboot as i get the MSS Power Up Message. I also get a very weird oscillation on both i2c lines after calling this API, which disappears after the self reboot.

Furthermore, i have some questions for understanding: Are the FMCW Sync and Clk Signals present after calling the Rf Power Up API or only after the Rf Init API?

Best regards,

Tim

0 Santosh Krishnan 10 months ago in reply to Tim Teuber

TI__Mastermind 18980 points

Hello.

What SDK are you using? SDK 4.4/4.6 use an mmwave control library that utilizes values for only 77 GHz so they have to be adjusted for 60 GHz. Let me follow up with you offline with some more information.

Sincerely,

Santosh

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IWR6243: Cascade Configuration gets stuck on RF Init