Problem reading buffer in different functionshttps://devzone.nordicsemi.com/f/nordic-q-a/70997/problem-reading-buffer-in-different-functionsHello! me and a coworker are developing a library for communicating with a peripheral via UART. The main idea is that when we send a command, we should get the corresponding to acknowledge and, if needed, more data. We are using Zephyr, and using theen-USTelligent Community 13Wed, 27 Jan 2021 15:31:15 GMTRE: Problem reading buffer in different functionshttps://devzone.nordicsemi.com/thread/291571?ContentTypeID=1Wed, 27 Jan 2021 15:31:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3aa30469-4c66-47dc-a7d2-3850ad70a960Baowz<p>Thank you for your quick response! You are totally right, this fixed the problem!</p><div style="clear:both;"></div>RE: Problem reading buffer in different functionshttps://devzone.nordicsemi.com/thread/291566?ContentTypeID=1Wed, 27 Jan 2021 15:17:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f313018-2090-431c-b94e-b8a3916fca49Daniel Chisholm<p>&quot;static&quot; in your header file will make your variables local to that module.&nbsp; So read_buf[] i&nbsp; your library is a different read_buf[] than in main.c</p> <p>You probably want a global variable.&nbsp; Declare it &quot;extern uint_8&quot; in your header file, and &quot;uint_8&quot; (neither static nor extern) in your main.c</p><div style="clear:both;"></div>