# How to run on PlatformIO IDE - Download and extract to this project root a **mklittlefs** executable for your OS [from a zipped binary here](https://github.com/earlephilhower/mklittlefs/releases) - Open **LITTLEFS_PlatformIO** folder - Run PlatformIO project task: **Upload Filesystem Image** - Run PlatformIO project task: **Upload and Monitor** - You will see a Serial output like: ``` --- Miniterm on COM5 115200,8,N,1 --- --- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H --- ets Jun 8 2016 00:22:57 rst:0x1 (POWERON_RESET),boot:0x13 (Snfigsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0018,len:4 load:0x3fff001c,len:1044 load:0x40078000,len:10044 load:0x40080400,len:5872 entry 0x400806ac Listing directory: / FILE: /file1.txt SIZE: 3 LAST WRITE: 2020-10-06 15:10:33 DIR : /testfolder LAST WRITE: 2020-10-06 15:10:33 Creating Dir: /mydir Dir created Writing file: /mydir/hello2.txt - file written Listing directory: / FILE: /file1.txt SIZE: 3 LAST WRITE: 2020-10-06 15:10:33 DIR : /mydir LAST WRITE: 1970-01-01 00:00:00 Listing directory: /mydir FILE: /mydir/hello2.txt SIZE: 6 LAST WRITE: 1970-01-01 00:00:00 DIR : /testfolder LAST WRITE: 2020-10-06 15:10:33 Listing directory: /testfolder FILE: /testfolder/test2.txt SIZE: 3 LAST WRITE: 2020-10-06 15:10:33 Deleting file: /mydir/hello2.txt - file deleted Removing Dir: /mydir Dir removed Listing directory: / FILE: /file1.txt SIZE: 3 LAST WRITE: 2020-10-06 15:10:33 DIR : /testfolder LAST WRITE: 2020-10-06 15:10:33 Listing directory: /testfolder FILE: /testfolder/test2.txt SIZE: 3 LAST WRITE: 2020-10-06 15:10:33 Writing file: /hello.txt - file written Appending to file: /hello.txt - message appended Reading file: /hello.txt - read from file: Hello World! Renaming file /hello.txt to /foo.txt - file renamed Reading file: /foo.txt - read from file: Hello World! Deleting file: /foo.txt - file deleted Testing file I/O with /test.txt - writing................................................................ - 1048576 bytes written in 12006 ms - reading................................................................ - 1048576 bytes read in 547 ms Deleting file: /test.txt - file deleted Test complete ``` - If you have a module with more than 4MB flash, you can uncomment **partitions_custom.csv** in **platformio.ini** and modify the csv file accordingly