https://devzone.nordicsemi.com/f/nordic-q-a/108110/irq_connect-duplicate-issueI have an application that is working properly running on nrf52832, but now am trying to port it to nrf52840 to take advantage of the additional features available there. I use my own TWIM manager thread to allow multiple threads to &quot;share&quot; an I2C busen-USTelligent Community 13Tue, 06 Feb 2024 22:54:19 GMThttps://devzone.nordicsemi.com/thread/467823?ContentTypeID=1Tue, 06 Feb 2024 22:54:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:89dad301-4adb-4463-b6e8-e73b7db2a71aCktDesigner<p>Turns out this was due to a CONFIG issue...&nbsp; &nbsp; &nbsp;I added config statements for USB and had both:</p> <div> <div><span>CONFIG_USB_DEVICE_STACK_NEXT</span><span>=y</span></div> <div><span>CONFIG_USB_DEVICE_STACK=y</span></div> <div><span></span></div> <div><span>defined...&nbsp; &nbsp;Commenting out CONFIG_USB_DEVICE_STACK=y solved the problem...</span></div> </div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/467819?ContentTypeID=1Tue, 06 Feb 2024 21:46:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8fa484c7-e943-4935-be16-43bebc1077c0CktDesigner<p>Given that this works on nrf52832, perhaps this error isn&#39;t associated with TWIM1...&nbsp; &nbsp;Where is the IRQ table index 39 position defined (what device is associated with this position)?&nbsp;&nbsp;</p><div style="clear:both;"></div>