NUCLEO-C031C6 SD CARD with SPI Interface (speed problem)

[Nello Cris]

Dear all,

I'm reading a file on sd card by spi interface on my NUCLEO board using this example: https://github.com/kiwih/cubeide-sd-card/

I find that the speed reading 1500 bytes is near 30ms. On Arduino with a 16mhz clock I read them in 7ms

Why we have this difference? May be a library problem? The prescaler I set the SPI CLOCK is /4 and the clock is 48Mhz

Thank you to who will help.

Nello

[Saket_Om]

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@Nello Cris wrote:

Dear all,

I'm reading a file on sd card by spi interface on my NUCLEO board using this example: https://github.com/kiwih/cubeide-sd-card/

I find that the speed reading 1500 bytes is near 30ms. On Arduino with a 16mhz clock I read them in 7ms

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16 Mhz IS THE spi clock frequency? If yes it lower that the SPI clock frequency for STM32. So, it is normal that the transfer takes more time.