https://devzone.nordicsemi.com/f/nordic-q-a/119010/data-length-to-push-pop-on-queuenRF5_SDK_17.1.0 PCA10059 According to the source code: The data length is fixed,it will still copy element-size bytes to buffer even if no so much data. For communication packet, the length is not fixed,maybe different type with different lengthen-USTelligent Community 13Mon, 17 Feb 2025 14:43:32 GMThttps://devzone.nordicsemi.com/thread/523319?ContentTypeID=1Mon, 17 Feb 2025 14:43:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:463b84be-8a9f-4252-917b-deeef71e20e9OldXiao<p>Get it.</p> <p>It is the most free way to operate queue with one byte element size except the efficiency is a little low.</p> <p>It is acceptable to fix the byte count written into queue if the difference between element size and actual data size is not so big.</p> <p>In my case,I have to assume the difference is big in most case.</p> <p>So I just add functions to nrf_queue.c to support my requirement.&nbsp;&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/523277?ContentTypeID=1Mon, 17 Feb 2025 13:22:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:32da6a08-c894-4b31-abd7-db61bc09bfbftesc<p>Hi,</p> <p>You can push N elements to a queue through use of <a href="https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.1.0/page/group_nrf_queue.html#gae790c55761bf7cc1a7875c21cf235501">nrf_queue_write()</a>. For instance, if the element size is one byte, then to write N bytes to the queue you can pass N as the element_count argument to nrf_queue_write().</p> <p>Similarly, to read N bytes, you can use <a href="https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.1.0/page/group_nrf_queue.html#gab663896f58e0214a5f5f3681eed575b4">nrf_queue_read()</a>.</p> <p>Basically, with those APIs as building blocks, you could build something more advanced on top, if you need more control of what is put into the queue. Or, you could use those APIs directly.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>