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@@ -10,7 +10,7 @@ designed for readability and simplicity over performance.
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You will need something that implements the `BlockDevice` trait, which can read and write the 512-byte blocks (or sectors) from your card. If you were to implement this over USB Mass Storage, there's no reason this crate couldn't work with a USB Thumb Drive, but we only supply a `BlockDevice` suitable for reading SD and SDHC cards over SPI.
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To accommodate specific requirements when using SD cards on a shared SPI bus, this crate uses a bespoke `SdCardDevice` trait instead of the more commmon `embedded_hal::spi::SpiDevice` trait. Implementations for several types that wrap a `embedded-hal::spi::SpiBus` implementation are provided in the `sd_card` module. Some are guarded behind cargo features:
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To accommodate specific requirements when using SD cards on a shared SPI bus, this crate uses a bespoke `SdCardSpiDevice` trait instead of the more commmon `embedded_hal::spi::SpiDevice` trait. Implementations for several types that wrap a `embedded-hal::spi::SpiBus` implementation are provided in the `sd_card` module. Some are guarded behind cargo features:
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-`embedded-hal-bus-03`: adds support for `embedded-hal-bus::spi::ExclusiveDevice`. This is probably the easiest way to use this crate when the SD card is the only device on the bus.
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-`embassy-sync-06`: adds support for using a blocking mutex from the `embassy-sync` crate. This allows sharing the bus between multiple tasks.
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