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Original question:

BOOSTXL-PGA460: Cannot Get BusDemo Example Sketch to Work Properly

BOOSTXL-PGA460: BusDemo/Trinagulation Demo - Correct Wiring of MSP430 and Multiple PGA460PSM EVMs

Sensonit
Prodigy 30 points
Part Number: BOOSTXL-PGA460
Other Parts Discussed in Thread: MSP430F5529, MSP-EXP430F5529LP, PGA460

Hello,

I'm currently trying to get the BusDemo/Triangulation sketches running but I'm struggling with the correct wiring. I have a MSP430F5529 LaunchPad with 3 PGA460PSM EVM sensors. For my understanding, firstly I need to write the UART addresses on each sensor individually with the GUI (0, 1 & 2 - burning EEPROM). Further, I have already uploaded the 'correct' Memory Map which I found in another post in this forum (since the EVM has a PUI Audio transducer with a different center frequency). But how do I wire the MSP and the EVMs in UART mode to get the busdemo/triangulation demo running?

Further, @ :

In the thread below you posted a video link, which should show the usage of the busdemo sketch. The link seems to be online - do you mind to reupload the unofficial video guide?

Thank you very much in advance for your help!

Best regards,

Sensonit

  • 0
    TI__Mastermind 27940 points

    Hi Sensonit,

    Your procedure is correct for preparing the PGA460PSM-EVMs for the UART bus demo.

    After you've EERPOM programmed the UART_ADDR of each EVM to a different value, you just need to connect each EVM's UART pins to the MSP-EXP430F5529LP UART port (PGA460 TXD to MSP430 P3.4 and PGA460 RXD to MSP430 P3.3). Also, ensure you establish a common ground between the GND pin of each EVM and LaunchPad, and supply the PGA460 VPWR pin with an external voltage of 6 to 28V.

    Since multiple devices need to make contact with the same pins, you may need to use a bread board to create a rail expansion for the RXD, TXD, GND, and PWR pins.

    The previous video was specific to One-Wire UART on IO, not standard UART on TXD and RXD. If you still want to see the BusDemo in operation, here is draft video link (temporarily re-available): https://txn.box.com/s/9zlj81a6o3q8swwyy6motz43sogigzau 

  • 0 in reply to Akeem Whitehead
    Prodigy 30 points

    Thanks a lot Akeem, I'll try your suggestions!