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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32


problems about the FATFS and STM32F4

I would like to realize the data which will record by TF, A frame of data which has 2048 bytes will be recorded every 20ms. The writing time of every frame of data can’t ever 20ms. Because of the data was found to be lose,I opened a timing counter to calculate time in the program. As a result, the biggest time arrived 200ms !! It’s so big ! Then I opened a relief area of 20 frames, but the data lost as normal.
The transmission mode of SDIO is DMA.
Didn’t the data write in ? How do you think about it?
The driving of SDIO is using atom.
The loss rate of data