https://devzone.nordicsemi.com/f/nordic-q-a/123305/why-flash-operations-block-dma-activityHardware: nRF5340 NCS2.5.0 Hello: Why flash operations block UART DMA activity?how can i fix this? My uart init: every 10ms,i shoudle get gpio toggle,but when I flash something.gpio toggle delay. flash operations:en-USTelligent Community 13Tue, 29 Jul 2025 12:01:22 GMThttps://devzone.nordicsemi.com/thread/543929?ContentTypeID=1Tue, 29 Jul 2025 12:01:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a090e733-0bdc-4f43-80fe-59c3de351a1fVidar Berg<p>Hello,</p> <p>The DMA should not be blocked, but the CPU will be halted during flash operations which will delay processing of interrupts. Are you also experiencing this delay if you only write small chunks of data?</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1753790454357v1.png" alt=" " /></p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1753790476078v2.png" alt=" " /></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>