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nRF51 DK Virtual Uart

Milan

Hi Team,

I am testing UART on nRF51 DK kit. I have flashed uart_pca10028.
I have taken out jumpers from P0.9(TX), P0.11(RX) and GND and connected to PC com port.

Now behavior is, on power on all 4 LEDs on board are ON. When I Insert jumper on P0.11 all 4 LEDs goes dim.

Nothing is received on PUTTY.

Any idea? Can anyone suggest how to check this ?

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  • 0

    Hi playerM,

    The UART pins are internally connected to the Segger chip and it will be available on you PC as normal COM port. For this you DO NOT HAVE TO connect TX,RX,RTS and CTS to PC.

    Steps,

    1. remove all wired connections to PC with TX, RX, GND etc related to serial port.
    2. plug in your device PCA100028, it should now be available in your PC as a COMXX device.
    3. (added) comment the line #define ENABLE_LOOPBACK_TEST if you do not want loopback test on uart. If you want to test loopback then you need to connect TX and TX pins on the board.
    4. Flash your program uart_pca100028
    5. Open PUTTY (or any other serial emulator) and connect it to the new COM port.
    6. select baudrate 38400 and your example should work fine.
  • 0 in reply to Susheel Nuguru

    sorry, it was a typo, changed NOT -> NOW

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