https://devzone.nordicsemi.com/f/nordic-q-a/119084/esb-api-debugging-problemsI&#39;m using the ESB API and I&#39;ve noticed some peculiar operation when debugging with nRF Connect. I have made the following observations: 1) Giving a semaphore in the ESB Event handler does not always work. It appears to work when I step through the codeen-USTelligent Community 13Mon, 25 Aug 2025 18:57:59 GMThttps://devzone.nordicsemi.com/thread/546659?ContentTypeID=1Mon, 25 Aug 2025 18:57:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:facd99a6-81b3-4bd2-913b-c916f23bc4d3Jim Logsdon<p>please close this ticket</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/525082?ContentTypeID=1Thu, 27 Feb 2025 13:52:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b3cbd0e8-d513-4139-a164-2a1ec81cea35Jim Logsdon<p>Thank you</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/523597?ContentTypeID=1Tue, 18 Feb 2025 20:13:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:69a88597-8e77-4555-9505-b888ccffe9a3Kenneth<p>Hello,</p> <p>I suspect that ESB for instance use&nbsp;IRQ_DIRECT_CONNECT() for interrupts, which have some limitations, see discussion here for details:<br /><a href="https://devzone.nordicsemi.com/f/nordic-q-a/105429/nrf52840-nrfx-gpiote-zephyr-thread-unresponsive">https://devzone.nordicsemi.com/f/nordic-q-a/105429/nrf52840-nrfx-gpiote-zephyr-thread-unresponsive</a>&nbsp;</p> <p>Kenneth</p><div style="clear:both;"></div>