Function Description

SD card read and write operations

  • open sdcard file mode Open the specified file and perform a read or write operation. This file must exist in the r and r+ states, otherwise an error is reported. The a, w, and w+ modes are automatically created if no files exist.

  • file read all Read all the bytes of the file

  • file read bytes Read the given number of bytes

  • file read line Read a line of content

  • file write Write bytes to the file

  • file set seek Set the offset position of the read

  • file get seek Get the current offset position

  • sdcard listdir List the specified catalog file

  • file mkdir Set the offset position of the read

  • sdcard remove Delete specified file

  • sdcard rmdir Delete the specified directory

  • sdcard rename File rename


Create a test folder, create a file named TEST.text, write helloM5Stack, and read M5Stack

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