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CC2650STK: Serial logging output?

John Whitmore2
Prodigy 180 points
Part Number: CC2650STK
Other Parts Discussed in Thread: CC2650

I'm using the CC2650STK with a "Debugger DevPack" to program the device from the IDE. 

I see that the serial output from the schematics that the CC2650 Serial pins are connected to the 20 Pin header of the board. That connector will be a bit difficult to solder to. Is there some other pad on the CC2650STK or DevPack boards that I could get access to serial logging information from the uC?

  • 0
    Guru 735685 points

    I am afraid there is no dedicated DevPack boards for such purpose.

  • 0 in reply to YiKai Chen
    Prodigy 180 points

    I was concentrating on the CC2650STK schematics and found nothing but just thought of the Dev Pack board. It actually has an unsoldered through hole header on the board which seems to be an option.

    How could TI release a Dev board without access to a UART. Maybe it's just me who debugs 90% of the time with printf();

  • 0 in reply to John Whitmore2
    Guru 735685 points

    Actually, TI has connect UART pins to CC-DEVPACK-DEBUGGER and it bridge the UART to simulated application COM port on Desktop for UART communication. However, you need to connect UART pins to another host MCU and I suppose this is not the use case of CC-DEVPACK-DEBUGGER.

  • 0 in reply to YiKai Chen
    TI__Guru**** 317180 points

    As far as I see this shouldn't be an issue. Have you tried the "display" example since this uses the UART? 

  • 0 in reply to TER
    Prodigy 180 points

    I've not looked at the "display" example but it might well use the UART but if there's no way of connecting to pin it might as well not use the UART. Be like writing a "Blinky" example project which "flashes" a GPIO pin but there's no LED attached to that GPIO Pin so how would you know?

    Maybe the "display" example uses expansion board which "breaks out" the Rx and Tx pins, which is great but I don't have that expansion board, if there is one. I certainly don't have a display.

    I'll solder to the DevPack Debugger board

  • 0 in reply to John Whitmore2
    TI__Guru**** 317180 points

    The reason I ask if you have tested this is that the example is listed under CC2650STK and list as requirement the DevPack. So I assume from this that UART through the DevPack works on the USB backchannel.