https://devzone.nordicsemi.com/f/nordic-q-a/91318/nrf5340-problems-with-getting-ipc-to-workI have been trying to implement the IPC code given in to send an event from the network core to the application core. I added CONFIG_NRFX_IPC=y the prj.conf for both cores. Whenever I try to build, I get the following error: gen_isr_tables.py: erroren-USTelligent Community 13Fri, 26 Aug 2022 22:00:14 GMThttps://devzone.nordicsemi.com/thread/383536?ContentTypeID=1Fri, 26 Aug 2022 22:00:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ce0fc3e3-59c6-40b5-81d3-873dae7475b2AviveScott<p>That solved the problem. Thanks! I will need to look at what the MBOX driver is also.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/383451?ContentTypeID=1Fri, 26 Aug 2022 11:37:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05cb485f-3744-4c27-b2d9-054b0d6a0ce5Vidar Berg<p>Hello,</p> <p>It seems like maybethe Zephyr <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/zephyr/hardware/peripherals/mbox.html">MBOX</a> driver gets enabled in your build. This driver will initialize the nrfx IPC driver on startup and define the IRQ vector.</p> <p>Please try to add the following configs to your net and app core build:</p> <p>CONFIG_MBOX=n<br />CONFIG_NRF53_SYNC_RTC=n<br />CONFIG_OPENAMP=n</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/383142?ContentTypeID=1Wed, 24 Aug 2022 22:47:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b7dd14bf-79e1-4fc3-af94-dfb8db401a56AviveScott<p>Further information: I am running on the nrf5340 evaluation board. Both cores are returning NRFX_ERROR_ALREADY_INITIALIZED during the calls to ipc_init().</p><div style="clear:both;"></div>