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STM32F769 Disco DFSDM with DMA Maximum Transfer Length

sezgin135
Associate II

Hello,

Currently I am working on STM32F769 DISCO board with STM32CubeIDE, my aim is to transfer DFSDM conversion results to FMC RAM using DMA. I am able successfully transfer data and verify it.

However, when my total conversion length goes above a limit (53392), DMA doesn't transfer data beyond the 53392 data points in FMC RAM. i.e, I start my conversion with :

HAL_DFSDM_FilterRegularStart_DMA(filter, target_address, total length) however if my total length > 53392, system works only on the first 53392 points in RAM even though it continues its circulat conversion in the first 53392 data points.

Thank you for your kind help.

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