Redirecting printf to uart using retarget

[kentorth]

Sifting through previous posts about redirecting printf to uart by using retarget.c, I have found this will work on previous versions of segger (5.42).  Has anyone gotten it to work with SDK 17.1.0 and the latest version of Segger 8.x and above?  I know lots of the segger stuff is deprecated with the shift towards Zephyr and VS Code.  I think I will eventually move there, but right now, I've got a working project with Segger 8.10b and SDK 17.1.0 and I need to do some debugging by redirecting printfs to uart.  The uart is working and sure, I can write my own, but want the easiest way to redirect.  I've defined retarget and have it included in my project.  I get build errors if library io is set to none.  I do not want to use RTT, just standard prints.

Thanks in advance

Kentorth

[Sigurd]

Hi!

I have found this will work on previous versions of segger (5.42).

Yes, as per the nRF5-SDK release notes, https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/index.html , this is the version that was used for testing and verification. I would recommend that you use that version. Other versions might work, but since they are not tested and verified by us in context of the nRF5-SDK, you might run into unknown issues.