Why flash operations block DMA activity?

[huniu]

Hardware:

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:

[Vidar Berg]

Hello,

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?

Best regards,

Vidar