SDMMC, read/write command with large data

linshi
Posts: 1
Joined: Wed Jun 21, 2023 1:47 am

SDMMC, read/write command with large data

Postby linshi » Wed Jun 21, 2023 3:16 am

Good morning,

I am using esp-idf 5.0.1 to develop sdmmc host.
Due to DMA buffer is limitted, I can not write/read large data in one sdmmc ommand.
Is there any possibility to read/write lage data in one sdmmc command?
For example, the first transation is CMD25 + 256KB, the second transation is 256KB only, and the last transation is CMD12.

Thanks a lot.

Vincent

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