https://devzone.nordicsemi.com/f/nordic-q-a/42705/undefined-reference-to-driver-functionsI am trying to use nrfx_timer and nrf_drv_ppi in Light switch server demo example. But I face undefined reference error. I have add c files path and include in CMakeLists.txt(see attached). What am I missing setting for this integrate? Thanks, en-USTelligent Community 13Tue, 09 Jul 2019 13:14:12 GMThttps://devzone.nordicsemi.com/thread/197394?ContentTypeID=1Tue, 09 Jul 2019 13:14:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c02fdbae-68a1-43c6-9ca9-e727e8cb555ahaakonsh<p>legacy means the non-nrfx ppi drivers</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/196373?ContentTypeID=1Thu, 04 Jul 2019 04:47:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57994a61-7959-49c8-95a9-027e55f74158sara<p>Legacy drivers mean which drivers? And I have enabled nrfx ppi drivers but still facing the above errors.I am using SDK 15.3.0</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/166404?ContentTypeID=1Fri, 18 Jan 2019 08:39:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f19a86f1-8766-4258-9f02-761abaf54046haakonsh<p>You need to include the nrfx ppi drivers and enable both nrfx and legacy drivers in sdk_config.h .</p><div style="clear:both;"></div>