what are the MDMA setting for OCTOSPI

[MNapi]

Those are the setting for STM32H7A3IIT6Q ?  (there is AN5050 where they show but DMA setting only)

I am trying to use

HAL_OSPI_Transmit_DMA(&hospi2, aTxBuffer)

(I have this chip working in interrupt mode fine , HAL_OSPI_Transmit_IT(&hospi2, aTxBuffer) but not MDMA)

I have this working for STM32L4P5G with following settings

[KDJEM.1]

Hello @MNapi ,

Could you please give more details about the issue? 

Please try to increase the "Priority" of the "OCTOSPI1 FIFO threshold" and disable interrupts before calling HAL_OSPI_Transmit_DMA.

Please check those links to understand more about the MDMA and its channels : LINK1  , LINK2 and STM32Cube Expansion Package for STM32H7 Series MDMA.

May this discussion can help you.

Kaouthar

[MNapi]

The settings for MDMA in this chip are a little different. This is what I am trying to find out, how do I setup the MDMA.

I do have the OCTO SPI working STM32H7A3IIT6Q.

There a lot of examples for DMA and QSPI.

There is example for DMA and OSPI

But I cannot find how to setup for MDMA and STM32H7A3IIT6Q.

[Tesla DeLorean]

I think this would be a short jog into what you need

https://github.com/STMicroelectronics/stm32h735g-dk-bsp/blob/617cad99e3a4e420d0a22ac7d9dbc6a4ba677351/stm32h735g_discovery_ospi.c#L1982

https://github.com/STMicroelectronics/stm32h735g-dk-bsp/blob/617cad99e3a4e420d0a22ac7d9dbc6a4ba677351/stm32h735g_discovery_ospi.h#L234