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32 lines
880 B
ReStructuredText
32 lines
880 B
ReStructuredText
SD/MMC/SDIO
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===========
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The SD/MMC stack supports SD/MMC memory card and SDIO card.
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The stack should be initialized with right HAL instance. Then sd_mmc_check is
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be used to detect and mount the card. When the card is ready, the block
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read/write functions are used to access the data on card. Note that the
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read/write functions split the read/write process to init/start/wait_end, so
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that user has chance to control the whole data process to remove overheads.
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Note if used MCI OS driver version,the operation for SD/MMC should be in os task.
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Features
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--------
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* Card initialization
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* Card detection and protection detection
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* Card type and capacity check
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* Card mount/unmount
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* Card read/write
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Dependencies
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------------
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* Peripheral that supports multimedia card interface (MCI)
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Limitations
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-----------
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* No SPI interface support yet
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* Support only one peripheral instance
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