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| author | Scott Shawcroft <scott@adafruit.com> | 2021-02-09 11:42:22 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-02-09 11:42:22 -0800 |
| commit | cd05aa52230f10c0613aa43082ef4487907dab8c (patch) | |
| tree | 199bea35d193ef9b5cf64280ab34bf5219fbd83f | |
| parent | f88357a5df454364e95a9c6dff65c946a39197f4 (diff) | |
| parent | ba2b65586f154e118300008d58e28e86c29b81cd (diff) | |
Merge pull request #4163 from jepler/spi-sharing-note
sdcardio: add a note about sharing the SPI bus with SD cards and other devices
| -rw-r--r-- | shared-bindings/sdcardio/SDCard.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/shared-bindings/sdcardio/SDCard.c b/shared-bindings/sdcardio/SDCard.c index 975f8b095..35d6c1497 100644 --- a/shared-bindings/sdcardio/SDCard.c +++ b/shared-bindings/sdcardio/SDCard.c @@ -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 |