Feather STM32F405 Express

The Feather STM32F405 Express uses SDIO to connect its built in micro SD card slot.  Didn't notice it had an SD card slot?  We hid it on the underside.

To mount the SD card, use the following code.  Remember to put it in the file mount_sd.py on CIRCUITPY so you can easily call it from code.py or the REPL with import mount_sd.

Download: file
import board
import sdioio
import storage

sdcard = sdioio.SDCard(
    clock=board.SDIO_CLOCK,
    command=board.SDIO_COMMAND,
    data=board.SDIO_DATA,
    frequency=25000000)

vfs = storage.VfsFat(sdcard)

Adafruit Feather STM32F405 Express

PRODUCT ID: 4382
ST takes flight in this Feather board. The new STM32F405 Feather (video) that we designed runs CircuitPython at a blistering 168MHz –...
$24.95
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SD/MicroSD Memory Card (8 GB SDHC)

PRODUCT ID: 1294
Add mega-storage in a jiffy using this 8 GB class 4 micro-SD card. It comes with a SD adapter so you can use it with any of our shields or adapters. Preformatted to FAT so it works out...
$9.95
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This guide was first published on Jul 31, 2020. It was last updated on 2020-07-31 12:38:51 -0400.
This page (Feather STM32F405 Express) was last updated on Aug 01, 2020.