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TDC7201-ZAX-EVM: Board damaged after re-connecting with USB.

Part Number: TDC7201-ZAX-EVM
Other Parts Discussed in Thread: TDC7201, MSP-EXP430F5529LP,

Hello everyone,

I received a TDC7201 Eval board today. This board was plugged into TI's MSP430 (MSP-EXP430F5529LP) board for the very first time. It was possible to read all the register values. All the register values however, were 0x00, even though the  datasheet mentions that some registers have non zero values in certain registers (see image below). 

The USB cable was re-plugged into MSP430 TI board. After this, the values were read again using the TDC7201 EVM GUI software. All register values were 0xFF. This indicates that the TDC board is damaged correct?

If this is the case, i would like to understand how exactly repowering the TI board causes the board to damage. 

Best Regards

Abel

  • Hello Abel,

    Thanks for posting to the PS forum. Sorry you are having issues with the TDC7201 EVM. I am not sure this clearly indicates that the board is damaged. If the MSP is not connected to the GUI properly or flashed with the correct firmware then the registers could show 0x00. Make sure that you are connected to the right serial port in the setup page you should be able to see a "Connect Successful" at the bottom of the GUI. Once that is connected you can update the firmware in the debug tab. 

    If you are using the GUI to read the registers below and they indicate 0xFF (as shown below) for the CONFIGX and interrupt registers, this can indicate that the TDC7201 board that goes on top of the MSP430 is not connected at all or not connected in the right orientation.

    At startup without changing any registers you should be able to see the reset value for the registers:

    Please try these steps and if this does not work we can further troubleshoot your EVM. Thanks!

    Best,

    Isaac

  • Hello Isaac,

    It was possible to read the TDC Register values with the MSP Firmware version 2.07 for the very first time.

    There was no modification in Hardware setup or in Firmware when the board was reconnected. After reconnecting, only FFs were read from every single register. It was possible to read the Firmware version as well.

    Best Regards,

    Abel

  • Hello Abel,

    Thanks for the info. Can you confirm that the TDC7201-ZAX-EVM is connected in this same orientation? The USB connection from the MSP430 should be facing the same direction as the START_1 and STOP_1 connections.

     

    Best,

    Isaac

  • Hello Isaac,

    Yes, that's correct.

    Best Regards

    Abel

  • Hey Abel,

    Looks right too me, have you tried probing the SCLK, DIN, DOUT1, and CSB1 pins to see if there is any data passing through those lines? You can probe the MSP pins as well as the pins on the EVM board as well. You can find these signals in the J2 connector, please note the image shows this connected mirrored so the pins on the on the left are actually on the right side of the header. 

    Best,

    Isaac