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docs(sdcardio): clarify SD-first init rule for boards with floating C… #10947

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Merged
dhalbert merged 3 commits into from
Apr 15, 2026
Merged

docs(sdcardio): clarify SD-first init rule for boards with floating C… #10947

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f466b49
docs(sdcardio): clarify SD-first init rule for boards with floating C…
mikeysklar Apr 15, 2026
9abc9c9
Fix indentation of Exception block to match .. important:: level
mikeysklar Apr 15, 2026
1a85bc6
Fix comment formatting in SDCard.c
dhalbert Apr 15, 2026
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7 changes: 7 additions & 0 deletions shared-bindings/sdcardio/SDCard.c
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Expand Up @@ -43,6 +43,13 @@
//| Failure to do so can prevent the SD card from being recognized until it is
//| powered off or re-inserted.
//|
//| Exception: on boards where another SPI peripheral has a floating CS
//| pin with no hardware pull-up (such as the Feather RP2040 RFM), that
//| peripheral's CS must be driven HIGH before SD card initialization.
//| Failure to do so will corrupt the SPI bus during SD card init. In
//| these cases, initialize and drive the other peripheral's CS high
//| first, then initialize the SD card.
//|
//| Example usage:
//|
//| .. code-block:: python
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