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Using RS232 Tx & Rx pins to Configure the sensor

vishnu vikash
Intellectual 355 points
Part Number: IWR1443BOOST

Hi

My requirement is to control & configure IWR1443BOOST sensor from another Board.

I am using IWR1443BOOST ES3.0 EVM and I have made following below changes to the hardware


sheet 2, RS232TX U2A-N5 -> AR_RS232TX
sheet 11, AR_RS232TX -> R169 (DNI) -> J5-5
sheet 13, AR_RS232TX -> R128 U6A-33 (XDS110)

I have changed the resistors, for AR_RX232TX, remove R128, 0 ohms, install a 0 ohms resistor in R169

sheet 13, U6A-34(XDS110) -> R129 -> AR_RS232RX
sheet 11, J5-7 -> R166(DNI) -> AR_RS232RX
sheet 2, AR_RS232RX -> U2-N4 RS232_RX

I have changed the resistors, for AR_RS232RX, remove R129, 0 ohms, install a 0 ohms resistor at R166 

After this change, I have connected J5-5(Tx) & J5-7(Rx) pin to the corresponding Tx & Rx URAT pin in the board(master) which I used to configure & control the IWR1443BOOST.

  •  I have configured command Baud Rata as 115200 in IWR1443BOOST EVM.
  • In Master board also I have configured the com port with same baud rate (115200).
  • IWR1443BOOST EVM Command Line interface is enabled(CLI) and it was working fine with XDC USB interface.
  • When I made hardware changes in the board to work with UART (serial interface), the output is not as expected.
  • Particular serial com port is printing some garbage value in the terminal.

I need to configure the IWR1443BOOST through CLI, which this hardware change I am not able to do it.

Kindly help me in resolving this issue. and also let me know if you want more information on this issue

Thanks & Regards

Vishnu

  • 0
    TI__Mastermind 33805 points

    Hi,

    if you are checking the Data com port on the terminal it is expected to show "garbage" values if its running.

    Please make sure you have the right baud rate set on the termnal for the USER UART, since that sometimes results in garbage data output also.

    Regards,

    Charles 

  • 0 in reply to Charles Oladimeji
    Intellectual 355 points

    Charles,

    1. First, please confirm the hardware changes. What I have done is correct or Am I missing something?

    2. As I have mentioned earlier I am setting the same Baud Rate in both the sides(IWR1443BOOST & Terminal)

    3. As per my understanding

    • RS232Tx/RX is for config port 
    • AR_mss_logger is for data port

    If you see, I have made hardware changes only related to config port. With that, I am sure, I have not connected to Data Com Port. 

    Please correct me if my understanding is wrong.

    Thanks & Regards

    Vishnu

  • 0 in reply to vishnu vikash
    TI__Mastermind 33805 points

    Hi,

    It appears you have made the correct set of ECOs to the board to route the signal to the BP/LP Connector, Can you confirm using a logic analyzer if signal/data is routed correctly to the connector?

    You mention you were getting garbage data on the terminal. How is the data routed from the BP/LP connector to the terminal?

    Regards,

    Charles O

     

  • 0 in reply to Charles Oladimeji
    Intellectual 355 points

    Hi Charles,

    Thanks for the confirmation on the connection. 

    Data is routed from BP/LP connector through lead wires.

    I think I was getting garbage data as I missed to connect the ground along with Rx & Tx. Once I connect Ground along with Rx & Tx getting data properly.

    Thanks & Regards

    vishnu