https://devzone.nordicsemi.com/f/nordic-q-a/36588/ble-app-uart-central-retarget-c-issueHi, I&#39;m trying to run the ble app uart central example using SDK15 with Embedded Studio. When building the project, I encountered an error in retarget.c, where the error is &quot;conflicting types for &#39;__putchar&#39;. Any help is appreciated, thanks.en-USTelligent Community 13Thu, 19 Jul 2018 07:50:23 GMThttps://devzone.nordicsemi.com/thread/140608?ContentTypeID=1Thu, 19 Jul 2018 07:50:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad869b5a-ef5b-4731-845e-977700314e92Julian<p>Ahh.. thanks for the tip. It works.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/140606?ContentTypeID=1Thu, 19 Jul 2018 07:47:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aaf1e475-5da1-4208-badd-8f495dc3ce8bNihadh<p>Just faced the same. I checked the reference for it. There is no usage, so just comment it out.</p><div style="clear:both;"></div>