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LAUNCHXL-F28379D: UART communication with F28379D Launchpad or F28379D Control Card

Kevin Bachovchin
Expert 1060 points
Part Number: LAUNCHXL-F28379D

Hello,

Is UART communication possible with either the F28379D Launchpad or F28379D Control Card?  Looking at the user guide for the Launchpad and the Control Card,

https://www.ti.com/lit/ug/sprui76a/sprui76a.pdf?ts=1595625944390&ref_url=https%253A%252F%252Fwww.google.com%252F

https://www.ti.com/lit/ug/sprui77c/sprui77c.pdf?ts=1595625882632&ref_url=https%253A%252F%252Fwww.google.com%252F

they both discuss UART communication.  However, doesn't having UART require an IC to convert parallel data to serial data as described in the below link?

https://learn.sparkfun.com/tutorials/serial-communication/uarts

Looking at the drawings for the Launchpad and the Control Card, I don't see any such IC.  What am missing here?  How is UART communication possible?

  • 0
    TI__Mastermind 19795 points

    Hello,

    Thank you for your question! UART/SCI is indeed possible with both the F28379D Launchpad and the F28379D Control Card. To clarify the parallel notation from the provided article, the parallel portion is referring to the internals of the SCI interface, that are handled at the chip level (e.g. if wanting to transmit 8 data bits, the SCI peripheral serially sends these 8 bits although it has all 8 bits at the same time before sending). All external signals with UART are wired as shown on the previous page of that article.

    These parallel portions are for the most part "transparent" (not visible) from an external perspective at the pins. Please view figures 1.1 and 1.2 of the "TMS320x281x Serial Communications Reference Guide" for a more detailed view of the "bus" and inner workings of the SCI peripheral. I would also recommend looking through the various sections of this guide, as well as the SCI portions of the Technical Reference manuals (linked here) of the requested devices. These guides provide great detail that may help in further development as well!

    Let me know if this answers your question!

    Regards,

    Vince

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