https://devzone.nordicsemi.com/f/nordic-q-a/70730/nrf52-pca10040-dk-printf-output-via-puttyI have the nRF52 PCA10040 DK device, and I&#39;m downloading the code from the online mbed tutorial. I&#39;m using Putty serial port to communicate with the device at 9600 baud rate. I&#39;m trying to print out the elements of the Bluetooth beacon signals I receiveen-USTelligent Community 13Thu, 21 Jan 2021 13:18:38 GMThttps://devzone.nordicsemi.com/thread/290536?ContentTypeID=1Thu, 21 Jan 2021 13:18:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7964eedf-693a-450b-a0fb-e49ebf6fe44cEdvin<p>Hello,</p> <p>I am not familiar with the mBed SDK. If you have questions regarding that stack, I suggest you open a ticket on the mBed forum.</p> <p>If you want to use the <a href="https://www.nordicsemi.com/Software-and-tools/Software/nRF5-SDK">SDK from Nordic Semiconductor</a>, I believe it is the retarget.c that translates from printf() to actually outputting it through the UART. It is used in the example:</p> <p>SDK\examples\ble_peripheral\ble_app_uart.</p> <p>There you can see that printf() is used in the main.c file, and it comes from including the retarget.c/h file.</p> <p></p> <p>Whether this is implemented/enabled in the mBed SDK, I do not know.</p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>