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AWR1843BOOST: Reading Objects data over UART

venkatesh vasanthapu
Intellectual 355 points

Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843, , AWR1642BOOST, AWR1642

Hallo Team,

I would like to detect the objects using AWR1843Boost.  I flashed  " <install_dir>\lab0002_obstacle_detection\prebuilt_binaries\odsdemo_16xx.bin " file usinhg uniflash and it is working fine. I can see the objects in the GUI (from TI).

Now I would like to read the data using an external microcontroller. Is there any user guid in order to read the data from AWR1843 uisng UART protocol? 

If not, what are the steps i can follow in order to read the raw data from AWR1843BOOST.

Thanks in advance.

Best regards

Venkatesh.

  • 0
    TI__Guru 70460 points

    Hi Venkatesh,

    obstacle_detection demo supports AWR1642ODS EVM, although it may execute on AWR1843 but not with accuracy.

    Most of the TI-Rex application send result data over UART from the device, same UART can connect to ext. uProcessor.

    Compatible demo for AWR1843BOOST: mmw demo from SDK and medium range radar application from TI-Rex.

    UART lines are available on AWR1843BOOST header which you can connect to ext. MCU using wires but required to connect few resistor to enable this path.

    CLI UART uses RS232 RX/TX lines and DATA port uses MSS_LOGGER line of the device.

    • To connect RS232 Rx, RS232Tx (CLI_Port) and MSS_LOGGER (Data_port) with external MCU, there are few hardware changes need to be done on AWR1642BOOST EVM (connecting few resistors).
    • R166, R169 for RS232 Rx and Tx and R26 for MSS_LOGGER.
    • You need to remove RS232 Rx/Tx from XDS110 (as marked: R129, R128) as same line is being driven by XDS110 also for UART Rx to AWR1642.

    Please refer this e2e thread.

    https://e2e.ti.com/support/sensors/f/1023/p/795891/2952301#2952301

    Regards,

    Jitendra