CircuitPython driver for SD cards. This implements the basic reading and writing
block functionality needed to mount an SD card using
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Mounting a filesystem on an SD card so that its available through the normal Python ways is easy.
Below is an example for the Feather M0 Adalogger. Most of this will stay the same across different boards with the exception of the pins for the SPI and chip select (cs) connections.
import adafruit_sdcard import busio import digitalio import board import storage # Connect to the card and mount the filesystem. spi = busio.SPI(board.SCK, board.MOSI, board.MISO) cs = digitalio.DigitalInOut(board.SD_CS) sdcard = adafruit_sdcard.SDCard(spi, cs) vfs = storage.VfsFat(sdcard) storage.mount(vfs, "/sd") # Use the filesystem as normal. with open("/sd/test.txt", "w") as f: f.write("Hello world\n")
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