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TMS320F28379D: RTS, CTS and nSHUTd configuration for TMS320F28379D launchpad

AKASH CHOWDHURY
Prodigy 50 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: CC2564C

I am trying to create a project on the TMS320F28379D launchpad to communicate with cc2564c BT controller. I want to configure pins for RTS, CTS and nSHUTd functionality of SCI(UART) but couldn't figure out the appropriate pins them .  Can anyone please help me to configure RTS, CTS and nSHUTd for this f2837xd MCU?  

  • 0
    TI__Guru 60865 points

    Hi Akash,

    The SCI module only handles RX and TX in hardware, so you would just hook up the RTS, CTS, and Shutdown signals to GPIOs and control them with software.

  • 0 in reply to Devin Cottier
    Prodigy 50 points

    Hello Devin,

    Thanks a lot for replying. I am using SCI_port_A. The RX and TX pins that I could find in GPIO28 and GPIO29. Can I use GPIO8 and GPIO9 instead, as both have pin mux option for SCITXDA and SCIRXDA?

    One more thing I couldn't figure out is how to configure a pin with an internal pull-down resistor. GPAPUD Register helps to configure only for pullup, either disable it or enable it. I want to configure the CTS pin as pulldown. Is there any way to do it?

  • 0 in reply to AKASH CHOWDHURY
    TI__Guru 60865 points

    Hi Akash,

    Yeah, you can definitely use any of the possible pinmux options.  Just be careful as the relative order of TX and RX in the pins is different between these two sets of GPIOs.

    The pins only have internal pull-ups.  If you need a pull-down you'll have to add one externally (and in that case you don't want to enable the internal pull-up).