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Enabling the UART through the J-Link Lite interface

Jim

I have been successfully communicating with the PCA10001 evaluation kit using the virtual serial port that is exposed by the J-Link interface on the board.

I've now moved to my own hardware, and I'm using the J-Link Lite interface. I am able to download firmware and use the NRFGo Studio to install the Soft device, so I know my board is working and the interface is functioning.

However, there are no COM ports exposed by the J-Link Lite, so I can't see console output from my device.

Has anyone had trouble getting the COM port to work on the J-Link Lite? Has anyone managed to do it?

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    Hi,

    As Ole suggests, you need to convert the UART TTL to a USB interface to communicate with a PC. I would recommend purchasing a cable or breakout USB board from FTDI.

    The products I'm referring to can be found here. You can find most of these at Digikey for ~$20USD. I'm currently using the TTL-232R-3V3 cable to connect to my custom nRF51822 board and am able to communicate with no errors at speeds up to 921 kbaud.

    Hope this helps!

    Cheers, Steve

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  • 0

    Hi,

    As Ole suggests, you need to convert the UART TTL to a USB interface to communicate with a PC. I would recommend purchasing a cable or breakout USB board from FTDI.

    The products I'm referring to can be found here. You can find most of these at Digikey for ~$20USD. I'm currently using the TTL-232R-3V3 cable to connect to my custom nRF51822 board and am able to communicate with no errors at speeds up to 921 kbaud.

    Hope this helps!

    Cheers, Steve

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