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AWR2243BOOST: Problems with Interfacing via I2C

Part Number: AWR2243BOOST
Other Parts Discussed in Thread: AWR2243

Hello,

i am currently working on a project, where i have to configure the AWR2243Boost with an external host (Nvidia Jetson Nano) via I2C. I created a Break-Out-Board to Access the I2C-Interface implemented in the 60 Pin HD Connector of the AWR. I wanted to start my further development by testing the connection by sending the CNYS Message, descripted in the Interface Control Document. But when i am searching for connected i2c devices on the Jetson, the AWR2243 isnt showing up (should be device adress 0x28 as i read). Is there any step i forgot before i can establish a connection? I am in SOP=7 Mode (all 3 SOP Pin-Headers Bridged) and i did not reconfigure the device address by the GPIO Pins.

Furthermore, can I even apply the Interface Control Document to I2C Communication or is this only for SPI?

Best Regards

Tim

  • Dear Tim - 

    Thanks for the post and welcome to E2E!

    Here the AWR2243 on the AWR2243BOOST board is not by default connected to I2C, so you would need to add resistors as shown below and from schematic, page 2 : https://www.ti.com/lit/zip/sprr415 

    Then, as you said, booting while SOP 111b would result in moving the device into functional I2C mode. (from DS, pages 16 and 14)

      

    Yes. the AWR2243 supports host interface over SPI or I2C.