nRF52 DK Logging to USB

[paul_tanner]

I have an nRF52 DK and have compiled (with gcc) and flashed an example that contains the line

NRF_LOG_PRINTF("SPI example\r\n");

I get the appropriate LED flashing that indicates that the example is running.

I want to use screen (on OSX) to view the USB port (the same one that's powering the board).

screen /dev/tty.usbmodem2641

Nothing is getting logged.

What do I need to do to see this log output?

[paul_tanner]

@anlif provided a great solution here: github.com/.../rtt_minimal

You need a couple of downloads.

You can do the logging with SEGGER_RTT_printf(); instead of above; both calls seem to do the same thing.