SDCard

Example

• SDCard file read and write operations

from m5stack import *
from m5ui import *
from uiflow import *
from hardware import sdcard
setScreenColor(0x222222)

sdcard.SDCard(20000000)
with open('/sd/test.txt', 'w+') as fs:
  fs.write('Hello World')
with open('/sd/test.txt', 'r') as fs:
  print(fs.read())

API

sdcard.SDCard(20000000)

• Setting the SDCard bus clock frequency

with open('/sd/test.txt', 'w+') as fs:
    pass

• Opens the specified file and performs read or write operations inside it. r and r+ modes must exist or an error will occur. a, w, and w+ modes automatically create the file if it does not exist.

fs.write('Hello World')

• Write to file

fs.seek(0)

• Manipulate the file cursor movement position

os.mkdir('/sd/new_folder')

• Creating Folders

os.remove('/sd/filename')

• Deleting a file with a specified path

os.rmdir('/sd/folder')

• Delete a specified path folder

os.rename('/sd/old', '/sd/new')

• Renaming of documents

fs.read()

• Read all data

fs.read(1024)

• Read data of specified length

fs.readline()

• Read a line of data

fs.tell()

• Read the current file cursor position

os.listdir('/sd/')

• Viewing Catalog Files

os.stat('/sd/')[0] == 0x8000

• Check if the path is a file

os.stat('/sd/')[0] == 0x4000

• Check if the path is a directory

'' in os.listdir('/sd/')

• Check if a file is included in the path