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superiorsoftware · 2024-01-11

I have been working on a STM32L496VGT6 using a 2GB sd card. I have the interface set to 4bit bus, no flow control and a clock divider of 4. I have a demo application that uses SDMMC, FreeRtos and FatFs and works perfectly. When i move the exact fi...

superiorsoftware · 2024-01-11

The SDMMC clock is 48Mz with a SDMMC clock divide factor of 4. This works fine with DMA on my test application without all the other peripherals and comm running. On my real application I have the same configuration. I have also increased the divi...

superiorsoftware · 2023-10-30

Was there any solution to the SD_FindSCR() error? I am using a clock divider of 200 in 4bit mode on STM32L496 and the function still never returns a value. All works fine in 1 bit mode.

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SDMMC_ERROR_TX_UNDERRUN using SDMMC with FreeRtos and FatFs

Re: SDMMC_ERROR_TX_UNDERRUN using SDMMC with FreeRtos and FatFs

Re: SD card initialization problem in HAL driver function SD_FindSCR