pdf-icon

UIFlow Guide

UIFlow 1.0 Blockly

Event

Unit

UIFlow 1.0 Project

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
fs.seek(0)
  • 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
On This Page