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OCTOSPI with dma used for external DAC

edemier9
Associate II

Hallo.

I want to use OSPI to feed an external DAC with data.

Data shall be transfered through DMA from memory to OSPI. Eight bits and OSPI-CLK shall be used.

In the first place I set up OSP in octo mode, disabled all IRQ etc. and tried to write one byte to the DR (data register).

  • Every acces R or W to DR maked my system crash. JLINK connection lost!

Please help. Thanks.

I am using:

STM32L4R5 on nucleo as well as customer board.

STM32 IDE V1.0.2 as well as truestudio V9.3.

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