• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 30 subscribers
  • Views 310 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BOOSTXL-TUSS4470: Cannot Find The Checkbox in User's Guide Discription

TI-CSC
Genius 10855 points
Part Number: BOOSTXL-TUSS4470
Other Parts Discussed in Thread: TUSS4470, MSP-EXP430F5529LP

Hello E2E Experts,

Good day.

I cannot find the "En" checkbox or "Master" checkbox anywhere in the TUSS4470 EVM GUI. Please help me to find it.

TUSS44x0 EVM for Ultrasonic Sensors User's Guide (Rev. A)

3.5.2.5.3 External Sync and Trigger

To synchronize the time-of-flight command with an external system or another TUSS44x0 EVM, use the external sync and trigger run feature. When the En checkbox is checked, the GUI/EVM becomes a sync- slave, where BOOSTXL-TUSS44x0 pin-11 monitors for a low-to-high transition. The Master checkbox enables the GUI/EVM to act as the sync-master, such that the MSP-EXP430F5529LP forces a low-to-high transition on BOOSTXL-TUSS44x0's pin-13 when the START button is clicked in the Run Options group.

Regards,

CSC

  • 0
    TI__Mastermind 21760 points

    Hello TI-CSC,

    Thanks for posting to the sensors forum!

    Unfortunately the external sync and trigger function is not present in the GUI, this was from am older version of the GUI where there was a bug in the firmware so the function did not work. It was eventually removed but the documentation was never updated. If the user would like to use two TUSS4470 devices at the same time they will have to generate their own firmware to do this. Sorry for the confusion and I hope this helps!

    Best,

    Isaac

  • 0 in reply to Isaac Lara
    TI__Genius 10855 points

    Hello Isac,

    Good day.

    May I ask how can I set one transducer as a launcher and get signal readings from another transducer using TUSS4470 EVM?
     
    Also, is there a reference I can get help with to write firmware code to do that function? That will be helpful for me, since our team thought it was a built-in function before.
    Regards,
    CSC
  • 0 in reply to TI-CSC
    TI__Mastermind 21760 points

    Hello TI-CSC, 

    You can setup one TUSS4470 in a bi-static configuration which uses one transducers as the emitter and one transducer as the receiver. There are just some hardware modifications that need to be done to the EVM board in order to achieve this. Aside from that no software modifications need to be done.

    So the 0 ohm resistor R12 needs to be depopulated on the board. And the RX transducer needs to be connected to the J3 connector.

    This is a board image with the R12 resistor circled to make it easier to know what component needs to be removed.

    Separating the TX and RX transducers on the same board will still have a ringing period due to internal noise of the device that couples during the transmission portion of the measurement. It will be greatly reduced since they do not share the same transducer anymore but sharing the same transducer but the ringing will not be completely eliminated.

    Unfortunately I do not have any reference code to help out with two completely separate units, but essentially what needs to be done is that when the TX board needs to notify the RX board that it is about to transmit a signal. So a pulse can be sent to the RX MCU to enable the ADC to begin a measurement. If using two transducers on the same device the code does not need to be modified, it only needs to be modified when using two different TUSS44x0 devices. I hope this helps! 

    Best,

    Isaac