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Zephyr project on STM32

   Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
  • Install host dependencies.
  • Import toolchain and SDK.
  • Create, configure, build and manage apps.
  • Debug STM32.
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System Workbench for STM32

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STM32L0538 using FATFS with SPI

Posted by Gmaucotel on 2017-02-24 20:26

Hi,
I’m trying to read a memory card with FATFS through SPI, so I generated a project with CubeMX on my board (L0538-discovery). I think my problem is that I don’t give FATFS the right driver to link, because I get a FR_NO_FILESYSTEM when I try to f_open (but no error before), and the only driver I seem to have access to is USER_DRIVER. Does anyone know what is the driver I have to pass to FATSFS_LinkDriver before starting to use f_xxx function ?

Thanks

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Posted by nichtgedacht on 2017-02-25 02:05

Hi,

follow the call of MX_FATFS_Init() and look what it does.

If you use a plain CubeMX generated project you have to fill the 5 skeleton functions in user_diskio.c
Then provide what these functions needs.

There are examples in STM32Cube_FW_L0... repository.

For example the IO functions:
STM32Cube_FW_L0_V1.5.0/Drivers/BSP/Adafruit_Shield/stm32_adafruit_sd.c

For example the example user_diskio.c:
STM32Cube_FW_L0_V1.5.0/Middlewares/Third_Party/FatFs/src/drivers/sd_diskio.c

Dieter

Link

Posted by Gmaucotel on 2017-02-26 23:43

Thank you for the explanations and examples !

I adapted the files you showed me to my board (pins, leds, ..), but I have an FR_DISK_ERR when mount my device. Does anyone have a solution to know where it may comes from ? (Or which function between write, read and iodl)

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