https://devzone.nordicsemi.com/f/nordic-q-a/14973/bsp-c-problemsHello, I&#39;m remaking an nrf52 project in Keil and ran into an issue when it came to compiling. All of the errors outputted have came from bsp.c, mostly stating that a few macros are undefined: bsp.c(200): error: #20: identifier &quot;BSP_BUTTON_ACTION_LONG_PUSHen-USTelligent Community 13Wed, 06 Jul 2016 00:01:17 GMThttps://devzone.nordicsemi.com/thread/57132?ContentTypeID=1Wed, 06 Jul 2016 00:01:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a094973d-c11f-4fee-a16b-e0bcafb94d72Noel<p>Thanks! Ya it was a macro statement. I&#39;m trying to recreate one of the PWM examples in the sdk and realized that I didn&#39;t need bsp.c, just bsp.h, because the project didn&#39;t define the macros needed for that switch statement.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57131?ContentTypeID=1Tue, 05 Jul 2016 21:38:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b925640f-7409-4410-96dc-11e69ea9a076RichieJH<p>Look at where you are including bsp.h. If you have it being included in a manner that becomes circular the compiler will knock one out, looks like the one it is knocking out is the one you want.</p><div style="clear:both;"></div>