1.. _arduino_sd: 2 3========== 4Arduino SD 5========== 6 7Enables reading and writing on SD cards. 8Once an SD memory card is connected to the SPI interface of the Arduino or Genuino board you can create files 9and read/write on them. You can also move through directories on the SD card.. 10 11Detailed introduction: 12 13- https://www.arduino.cc/reference/en/libraries/sd/ 14 15 16Usage 17----- 18 19Enable :c:macro:`LV_USE_FS_ARDUINO_SD` and define a :c:macro:`LV_FS_ARDUINO_SD_LETTER` in ``lv_conf.h``. 20You will need to initialize the SD card before LVGL can use it (i.e. :cpp:expr:`SD.begin(0, SPI, 40000000)`). 21 22 23API 24--- 25