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| author | Jeff Epler <jepler@unpythonic.net> | 2021-02-09 10:07:12 -0600 |
|---|---|---|
| committer | Jeff Epler <jepler@unpythonic.net> | 2021-02-09 10:07:21 -0600 |
| commit | ba2b65586f154e118300008d58e28e86c29b81cd (patch) | |
| tree | 616836c4c76ae1a9d87ab434a3d948a243bfb8d8 /shared-bindings | |
| parent | 5ba28e9861b0b4101198a834953fcbd5f3e7b0f3 (diff) | |
sdcardio: add a note about sharing the SPI bus with SD cards and other devices
Similar to https://github.com/adafruit/Adafruit_CircuitPython_SD/pull/44
Diffstat (limited to 'shared-bindings')
| -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 |