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PGA460PSM-EVM: can't connect PGA460PSM-EVM board to the GUI

user6186688
Prodigy 20 points
Part Number: PGA460PSM-EVM
Other Parts Discussed in Thread: PGA460-Q1, MSP430F5529,

Hi everybody,

I want to evaluate the signals of an ultrasonic transducer with the PGA460-Q1 GUI.

Therefore I bought the PGA460PSM-EVM board and the MSP430F5529 LaunchPad.
The PGA460PSM-EVM board is supplied with an external power supply with 8V/1A.
For data transmission, the PGA460PSM-EVM board is connectet to the UART pins of
the MSP430F5529 LaunchPad as described in the PGA460PSM-EVM User's Guide(p.3).

If I start the GUI, the statusbar on the lower left says that some hardware is connected.
But if I click the "Check for PGA460-Q1" button, the GUI can't connect the PGA460PSM-EVM board.
I can't see any data or send a command to the pga 460 via the GUI.

It looks like the communication between the PGA460PSM-EVM board and the MSP430F5529 LaunchPad
doesn't work fine.

How can I solve the problem?
Are there some other important steps that I have to do for a successful hardware construction?
Like jumpers on the MSP430F5529 LaunchPad or something else?

If you have any idea, let me know about that.

Thanks for your support.

Kind regards

Kai

  • 0
    TI__Mastermind 27950 points

    Hi Kai,

    There are only three connection you need from the MSP-EXP4305529LP to the PGA460PSM-EVM:

    MSP-EXP4305529LP  PGA460PSM-EVM
    P3.4 TXD
    P3.3 RXD
    GND GND

    The most common connection issue users tend to have is the UART pins are swapped, or there is no common ground between the external power supply and the two boards. Powering the PGA460PSM-EVM from an external supply is OK. You can also try powering from the LaunchPad''s 5V pin for a quick communication check, though I do not recommend using a 5V supply for regular burst/listen operation.

  • 0 in reply to Akeem Whitehead
    Prodigy 20 points

    Hi Akeem,

    thanks for your fast reply. 

    I found my problem. I did not clear the threshold CRC error flag after the initialization step.

    If I clear it bevor the first burst and listen command, I can see the resulting ultrasonic signal and the threshold on the GUI' s data monitor.

    Thats fine.

    Greetings

    Kai