Put the code below in code.py on your CIRCUITPY drive, open up the REPL (and restart it with ^D if necessary) to get a listing of all the files an SD card contains. We recursively print out all files and also the filesize. This is a good demo to start with because you can at least tell if your files exist!
This example will work on any board where you've configured mount_sd.py!.
The function print_directory works using os.listdir (to list files in a directory) and os.stat (to get information about an item, such as size or whether it's a directory).
By keeping track of the nesting of directories within directories, names are indented according to the value of tabs to show the directory structure.
# SPDX-FileCopyrightText: 2017 Limor Fried for Adafruit Industries
#
# SPDX-License-Identifier: MIT
import os
# pylint: disable=unused-import
import mount_sd # You must create a module mount_sd.py that mounts your sd card!
def print_directory(path, tabs=0):
for file in os.listdir(path):
stats = os.stat(path + "/" + file)
filesize = stats[6]
isdir = stats[0] & 0x4000
if filesize < 1000:
sizestr = str(filesize) + " by"
elif filesize < 1000000:
sizestr = "%0.1f KB" % (filesize / 1000)
else:
sizestr = "%0.1f MB" % (filesize / 1000000)
prettyprintname = ""
for _ in range(tabs):
prettyprintname += " "
prettyprintname += file
if isdir:
prettyprintname += "/"
print('{0:<40} Size: {1:>10}'.format(prettyprintname, sizestr))
# recursively print directory contents
if isdir:
print_directory(path + "/" + file, tabs + 1)
print("Files on filesystem:")
print("====================")
print_directory("/sd")
Page last edited January 22, 2025
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