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LAUNCHXL-F28027F: SCI and I2C mapped to the same pins

Uladzimir
Intellectual 470 points

Part Number: LAUNCHXL-F28027F
Other Parts Discussed in Thread: MOTORWARE

I'm working with LAUNCHXL-F28027F. There 1xSPI, 1xSCI and 1xI2C. I need SCI interface for host control and I2C for external encoder. But in the datasheet and motorware SDK I see that SCI and I2C are mapped to the same pins. Is there a way to retarget I2C functions to other pins or some workaround to use SCI and I2C simultaneously?

  • 0
    TI__Genius 17315 points
    Uladzimir,

    For the F28027 device, the SCI can be mapped to various pins using the GPIO multiplexer - GPIO pins for RX and TX are 7/12, 18/19, and 28/29. Likewise, the LaunchPad has these pins available on headers J1/J5 and J2/J6. This will avoid conflicts with the I2C pins. Please see table 1 on page 8 in the LAUNCHXL-F28027 User's Guide:

    www.ti.com/lit/SPRUHH2

    I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

    - Ken
  • 0 in reply to Ken Schachter
    Intellectual 470 points
    Thank you Ken. Indeed, no way to retarget I2C but SCI retargeting will work.