Disk operations
When SD has been initialized properly, pointers can be used to access partition, file system and root directory. There are some functions that return information about the SD card.
Stores all the data containing the disk info into the buffer. It returns a filled buffer if success on getting disk info and an empty string if not.
Example of use
{
// Gets disk info, returning it and storing this info in 'SD.buffer'
SD.print_disk_info();
USB.println(SD.buffer);
}
Available Information
SD.buffer→ stores the data received as a human-readable encoded string.diskInfo → pointer to SD.bufferAn example of the output by this system would be:
manuf: 0x1b
oem: SM
prod: 21e7
rev: 1.0
serial: 0xedb6c604
date: 11/10
Gets the total size of the SD card.
It returns ‘diskSize’ variable and updates its value. Size is stored and returned in Bytes.
Example of use
{
// Get total size of SD card
diskSize = SD.getDiskSize();
USB.println(SD.diskSize);
}
Related Variables
SD.diskSize → stores the total size of the SD card. An example of the value would be: SD.diskSize=992608256
Last modified 3yr ago