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sdcardio: add a note about sharing the SPI bus with SD cards and other devices #4163

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Feb 9, 2021
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sdcardio: add a note about sharing the SPI bus with SD cards and other devices #4163

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6 changes: 6 additions & 0 deletions shared-bindings/sdcardio/SDCard.c
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Expand Up @@ -55,6 +55,12 @@
//| Data transfers use the specified baurate (rounded down to one that is supported by
//| the microcontroller)
//|
//| .. important::
//| If the same SPI bus is shared with other peripherals, it is important that
//| the SD card be initialized before accessing any other peripheral on the bus.
//| Failure to do so can prevent the SD card from being recognized until it is
//| powered off or re-inserted.
//|
//| Example usage:
//|
//| .. code-block:: python
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