storage – Storage management

The storage provides storage management functionality such as mounting and unmounting which is typically handled by the operating system hosting Python. CircuitPython does not have an OS, so this module provides this functionality directly.

Available on these boards
  • 8086 Commander
  • @sarfata shIRtty
  • AITHinker ESP32-C3S_Kit
  • ARAMCON Badge 2019
  • ARAMCON2 Badge
  • ATMegaZero ESP32-S2
  • Adafruit BLM Badge
  • Adafruit CLUE nRF52840 Express
  • Adafruit Circuit Playground Bluefruit
  • Adafruit Circuit Playground Express 4-H
  • Adafruit CircuitPlayground Express
  • Adafruit CircuitPlayground Express with Crickit libraries
  • Adafruit CircuitPlayground Express with displayio
  • Adafruit EdgeBadge
  • Adafruit Feather Bluefruit Sense
  • Adafruit Feather ESP32-S2 TFT
  • Adafruit Feather ESP32S2
  • Adafruit Feather M0 Adalogger
  • Adafruit Feather M0 Basic
  • Adafruit Feather M0 Express
  • Adafruit Feather M0 Express with Crickit libraries
  • Adafruit Feather M0 RFM69
  • Adafruit Feather M0 RFM9x
  • Adafruit Feather M4 CAN
  • Adafruit Feather M4 Express
  • Adafruit Feather MIMXRT1011
  • Adafruit Feather RP2040
  • Adafruit Feather STM32F405 Express
  • Adafruit Feather nRF52840 Express
  • Adafruit FunHouse
  • Adafruit Gemma M0
  • Adafruit Gemma M0 PyCon 2018
  • Adafruit Grand Central M4 Express
  • Adafruit Hallowing M4 Express
  • Adafruit ItsyBitsy M0 Express
  • Adafruit ItsyBitsy M4 Express
  • Adafruit ItsyBitsy RP2040
  • Adafruit ItsyBitsy nRF52840 Express
  • Adafruit KB2040
  • Adafruit LED Glasses Driver nRF52840
  • Adafruit Macropad RP2040
  • Adafruit MagTag
  • Adafruit Matrix Portal M4
  • Adafruit Metro ESP32S2
  • Adafruit Metro M0 Express
  • Adafruit Metro M4 Airlift Lite
  • Adafruit Metro M4 Express
  • Adafruit Metro nRF52840 Express
  • Adafruit Monster M4SK
  • Adafruit NeoKey Trinkey M0
  • Adafruit NeoPixel Trinkey M0
  • Adafruit ProxLight Trinkey M0
  • Adafruit PyGamer
  • Adafruit PyPortal
  • Adafruit PyPortal Pynt
  • Adafruit PyPortal Titano
  • Adafruit PyRuler
  • Adafruit Pybadge
  • Adafruit QT Py ESP32S2
  • Adafruit QT Py M0
  • Adafruit QT Py M0 Haxpress
  • Adafruit QT Py RP2040
  • Adafruit QT2040 Trinkey
  • Adafruit Rotary Trinkey M0
  • Adafruit Slide Trinkey M0
  • Adafruit Trellis M4 Express
  • Adafruit Trinket M0
  • AloriumTech Evo M51
  • Arduino MKR Zero
  • Arduino MKR1300
  • Arduino Nano 33 BLE
  • Arduino Nano 33 IoT
  • Arduino Nano RP2040 Connect
  • Arduino Zero
  • Artisense Reference Design RD00
  • AtelierDuMaker nRF52840 Breakout
  • BDMICRO VINA-D21
  • BDMICRO VINA-D51
  • BLE-SS dev board Multi Sensor
  • BastBLE
  • BastWiFi
  • BlueMicro840
  • CP Sapling M0
  • CP Sapling M0 w/ SPI Flash
  • CP32-M4
  • Capable Robot Programmable USB Hub
  • Cedar Grove StringCar M0 Express
  • Challenger NB RP2040 WiFi
  • Challenger RP2040 LTE
  • Challenger RP2040 WiFi
  • Circuit Playground Express Digi-Key PyCon 2019
  • CircuitBrains Basic
  • CircuitBrains Deluxe
  • CrumpS2
  • Cytron Maker Nano RP2040
  • Cytron Maker Pi RP2040
  • DynOSSAT-EDU-EPS
  • DynOSSAT-EDU-OBC
  • DynaLoRa_USB
  • ESP 12k NodeMCU
  • Electronic Cats Bast Pro Mini M0
  • Electronic Cats CatWAN USBStick
  • Electronic Cats Hunter Cat NFC
  • Electronic Cats NFC Copy Cat
  • Electronut Labs Blip
  • Electronut Labs Papyr
  • EncoderPad RP2040
  • Escornabot Makech
  • Espruino Pico
  • Espruino Wifi
  • Feather ESP32S2 without PSRAM
  • Feather MIMXRT1011
  • Feather MIMXRT1062
  • FeatherS2
  • FeatherS2 Neo
  • FeatherS2 PreRelease
  • Fluff M0
  • Fomu
  • Franzininho WIFI w/Wroom
  • Franzininho WIFI w/Wrover
  • Gravitech Cucumber M
  • Gravitech Cucumber MS
  • Gravitech Cucumber R
  • Gravitech Cucumber RS
  • HMI-DevKit-1.1
  • Hacked Feather M0 Express with 8Mbyte SPI flash
  • HalloWing M0 Express
  • HiiBot BlueFi
  • IMXRT1010-EVK
  • IkigaiSense Vita nRF52840
  • J&J Studios datum-Distance
  • J&J Studios datum-IMU
  • J&J Studios datum-Light
  • J&J Studios datum-Weather
  • Kaluga 1
  • LILYGO TTGO T8 ESP32-S2 w/Display
  • LoC BeR M4 base board
  • MDBT50Q-DB-40
  • MDBT50Q-RX Dongle
  • MEOWBIT
  • MORPHEANS MorphESP-240
  • MakerDiary nRF52840 MDK
  • MakerDiary nRF52840 MDK USB Dongle
  • Makerdiary M60 Keyboard
  • Makerdiary Pitaya Go
  • Makerdiary nRF52840 M.2 Developer Kit
  • Melopero Shake RP2040
  • Meow Meow
  • Metro MIMXRT1011
  • MicroDev microC3
  • MicroDev microS2
  • Mini SAM M4
  • NUCLEO STM32F746
  • NUCLEO STM32F767
  • NUCLEO STM32H743
  • OPENMV-H7 R1
  • Oak Dev Tech BREAD2040
  • Oak Dev Tech PixelWing ESP32S2
  • Open Hardware Summit 2020 Badge
  • PCA10056 nRF52840-DK
  • PCA10059 nRF52840 Dongle
  • PCA10100 nRF52833 DK
  • PYB LR Nano V2
  • Particle Argon
  • Particle Boron
  • Particle Xenon
  • PewPew 10.2
  • PewPew 13
  • PewPew M4
  • PicoPlanet
  • Pimoroni Interstate 75
  • Pimoroni Keybow 2040
  • Pimoroni PGA2040
  • Pimoroni Pico LiPo (16MB)
  • Pimoroni Pico LiPo (4MB)
  • Pimoroni PicoSystem
  • Pimoroni Plasma 2040
  • Pimoroni Tiny 2040
  • PyCubedv04
  • PyCubedv04-MRAM
  • PyCubedv05
  • PyCubedv05-MRAM
  • PyKey60
  • PyboardV1_1
  • RP2040 Stamp
  • Raspberry Pi 4B
  • Raspberry Pi Compute Module 4 IO Board
  • Raspberry Pi Pico
  • Raspberry Pi Zero 2W
  • Robo HAT MM1 M4
  • S2Mini
  • S2Pico
  • SAM E54 Xplained Pro
  • SAM32v26
  • SPRESENSE
  • ST STM32F746G Discovery
  • STM32F411E_DISCO
  • STM32F412G_DISCO
  • STM32F4_DISCO
  • Saola 1 w/Wroom
  • Saola 1 w/Wrover
  • Seeeduino Wio Terminal
  • Seeeduino XIAO
  • Seeeduino XIAO KB
  • Serpente
  • Silicognition LLC M4-Shim
  • Simmel
  • SparkFun LUMIDrive
  • SparkFun MicroMod RP2040 Processor
  • SparkFun MicroMod SAMD51 Processor
  • SparkFun MicroMod nRF52840 Processor
  • SparkFun Pro Micro RP2040
  • SparkFun Pro nRF52840 Mini
  • SparkFun Qwiic Micro
  • SparkFun RedBoard Turbo
  • SparkFun SAMD21 Dev Breakout
  • SparkFun SAMD21 Mini Breakout
  • SparkFun STM32 MicroMod Processor
  • SparkFun Thing Plus - RP2040
  • SparkFun Thing Plus - SAMD51
  • Sprite_v2b
  • StackRduino M0 PRO
  • Swan R5
  • TG-Boards' Datalore IP M4
  • TG-Watch
  • THUNDERPACK_v11
  • THUNDERPACK_v12
  • Targett Module Clip w/Wroom
  • Targett Module Clip w/Wrover
  • Teensy 4.0
  • Teensy 4.1
  • Teknikio Bluebird
  • The Open Book Feather
  • Thingz - Galaxia
  • TinkeringTech ScoutMakes Azul
  • TinyS2
  • Trinket M0 Haxpress
  • UARTLogger II
  • WarmBit BluePixel nRF52840
  • Winterbloom Big Honking Button
  • Winterbloom Sol
  • XinaBox CC03
  • XinaBox CS11
  • iMX RT 1020 EVK
  • iMX RT 1060 EVK
  • keithp.com snekboard
  • micro:bit v2
  • nanoESP32-S2 w/Wrover
  • nanoESP32-S2 w/Wroom
  • ndGarage[n°] Bit6: FeatherSnow-v2
  • ndGarage[n°]Bit6:FeatherSnow
  • nice!nano
  • senseBox MCU
  • stm32f411ce-blackpill
  • stm32f411ce-blackpill-with-flash
  • uChip
  • uGame10

storage.mount(filesystem: VfsFat, mount_path: str, *, readonly: bool = False) → None

Mounts the given filesystem object at the given path.

This is the CircuitPython analog to the UNIX mount command.

Paramètres:

  • filesystem (VfsFat) – The filesystem to mount.

  • mount_path (str) – Where to mount the filesystem.

  • readonly (bool) – True when the filesystem should be readonly to CircuitPython.

storage.umount(mount: str | VfsFat) → None

Unmounts the given filesystem object or if mount is a path, then unmount the filesystem mounted at that location.

This is the CircuitPython analog to the UNIX umount command.

storage.remount(mount_path: str, readonly: bool = False, *, disable_concurrent_write_protection: bool = False) → None

Remounts the given path with new parameters.

Paramètres:

  • mount_path (str) – The path to remount.

  • readonly (bool) – True when the filesystem should be readonly to CircuitPython.

  • disable_concurrent_write_protection (bool) – When True, the check that makes sure the underlying filesystem data is written by one computer is disabled. Disabling the protection allows CircuitPython and a host to write to the same filesystem with the risk that the filesystem will be corrupted.

storage.getmount(mount_path: str) → VfsFat

Retrieves the mount object associated with the mount path

storage.erase_filesystem() → None

Erase and re-create the CIRCUITPY filesystem.

On boards that present USB-visible CIRCUITPY drive (e.g., SAMD21 and SAMD51), then call microcontroller.reset() to restart CircuitPython and have the host computer remount CIRCUITPY.

This function can be called from the REPL when CIRCUITPY has become corrupted.

Avertissement

All the data on CIRCUITPY will be lost, and CircuitPython will restart on certain boards.

storage.disable_usb_drive() → None

Disable presenting CIRCUITPY as a USB mass storage device. By default, the device is enabled and CIRCUITPY is visible. Can be called in boot.py, before USB is connected.

storage.enable_usb_drive() → None

Enabled presenting CIRCUITPY as a USB mass storage device. By default, the device is enabled and CIRCUITPY is visible, so you do not normally need to call this function. Can be called in boot.py, before USB is connected.

If you enable too many devices at once, you will run out of USB endpoints. The number of available endpoints varies by microcontroller. CircuitPython will go into safe mode after running boot.py to inform you if not enough endpoints are available.

class storage.VfsFat(block_device: str)

Create a new VfsFat filesystem around the given block device.

Paramètres:

block_device – Block device the the filesystem lives on

label :str

The filesystem label, up to 11 case-insensitive bytes. Note that this property can only be set when the device is writable by the microcontroller.

mkfs() → None

Format the block device, deleting any data that may have been there

open(path: str, mode: str) → None

Like builtin open()

ilistdir(path: str) → Iterator[Tuple[AnyStr, int, int, int] | Tuple[AnyStr, int, int]]

Return an iterator whose values describe files and folders within path

mkdir(path: str) → None

Like os.mkdir

rmdir(path: str) → None

Like os.rmdir

stat(path: str) → Tuple[int, int, int, int, int, int, int, int, int, int]

Like os.stat

statvfs(path: int) → Tuple[int, int, int, int, int, int, int, int, int, int]

Like os.statvfs

mount(readonly: bool, mkfs: VfsFat) → None

Don’t call this directly, call storage.mount.

umount() → None

Don’t call this directly, call storage.umount.