https://devzone.nordicsemi.com/f/nordic-q-a/9385/doubt-in-defining-variables-in-bsp-header-file-bsp-hI am using SDK 9.0.0 and i am having a doubt in bsp.h.In this header file when gone through this part of the code #if (LEDS_NUMBER &gt; 0) &amp;&amp; !defined(BSP_SIMPLE) #define BSP_LED_APP_TIMERS_NUMBER 2 #else #define BSP_APP_APP_TIMERS_NUMBER 0 en-USTelligent Community 13Wed, 23 Sep 2015 09:11:38 GMThttps://devzone.nordicsemi.com/thread/34639?ContentTypeID=1Wed, 23 Sep 2015 09:11:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9312b511-b28c-455a-92be-e572514447faMartinBL<p>Hi</p> <p><a href="https://devzone.nordicsemi.com/question/49149/bug-in-bsph/">This is a known bug</a>. You can fix it by changing the line</p> <pre><code>#define BSP_APP_APP_TIMERS_NUMBER 0 </code></pre> <p>to</p> <pre><code>#define BSP_LED_APP_TIMERS_NUMBER 0 </code></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/34638?ContentTypeID=1Wed, 23 Sep 2015 06:51:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ed74631c-ae7b-448e-ad94-6f1ef9aef47dPeter<p>I search for the second which looks weird, and I can&#39;t find that it&#39;s in use anywhere else in the sdk. Sure looks like a typo!</p><div style="clear:both;"></div>