ESP8266 Community Forum

- Sat Nov 21, 2015 8:08 pm #34654 Hello,

Is there any example of how to use this.

https://github.com/esp8266/Arduino/blob ... ce.md#info

I have tried.

Code: Select all    struct FSInfo {
      size_t totalBytes;
      size_t usedBytes;
      size_t blockSize;
      size_t pageSize;
      size_t maxOpenFiles;
      size_t maxPathLength;
    };
    FSInfo fs_info;
    SPIFFS.info(fs_info);
    int FlashSize = totalBytes;
    FlashSize -= totalBytes;

but get the following msg at compile time

Code: Select allFunctions_and_var_management.ino: In function 'String GetMeThatVar(String)':
Functions_and_var_management.ino:144:24: error: no matching function for call to 'fs::FS::info(GetMeThatVar(String)::FSInfo&)'
Functions_and_var_management.ino:144:24: note: candidate is:
In file included from ESP8266Basic.ino:31:0:
C:\Users\user\AppData\Roaming\Arduino15\packages\esp8266\hardware\esp8266\2.0.0-rc1\cores\esp8266/FS.h:96:10: note: bool fs::FS::info(uint32_t*, uint32_t*)
     bool info(uint32_t *total, uint32_t *used);
          ^
C:\Users\user\AppData\Roaming\Arduino15\packages\esp8266\hardware\esp8266\2.0.0-rc1\cores\esp8266/FS.h:96:10: note:   candidate expects 2 arguments, 1 provided
Functions_and_var_management.ino:145:21: error: 'totalBytes' was not declared in this scope
no matching function for call to 'fs::FS::info(GetMeThatVar(String)::FSInfo&)'

Serial terminal in the chrome browser see https://serialTerminal.com

http://esp8266basic.com
A BASIC interpreter for your ESP

Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com

- Sat Nov 21, 2015 11:45 pm #34662 viewtopic.php?f=6&t=6470&start=5#p33588

Not to sure but this has some spiffs stuff in the code ...

It appears that spiffs has to be initialized first maybe this is just for his code and the way it is setup IDK I only read a little bit of it but is it possible that you must first initialize the file storage system before you get this data you are trying to get?

Helpful? Donate To help support Mike http://www.esp8266basic.com click the donate button lets keep this project going and hope we can get the ESP32 in the mix. BEGINNERS GUIDE HERE http://www.esp8266.com/viewtopic.php?f=40&t=6732

Where I buy my ESP8266 boards from... (Banggood)

- Sun Nov 22, 2015 10:21 am #34682 First, you need to pass pointer to the structure, second, you need to access member of the structure :

Code: Select allFSInfo fs_info;
SPIFFS.info(&fs_info);
int FlashSize = fs_info.totalBytes;


- Sun Nov 22, 2015 11:08 am #34684 Ok. Just tried this.

Code: Select all    struct FSInfo {
      size_t totalBytes;
      size_t usedBytes;
      size_t blockSize;
      size_t pageSize;
      size_t maxOpenFiles;
      size_t maxPathLength;
    };



    FSInfo fs_info;
    SPIFFS.info(&fs_info);
    int Flashfree = fs_info.totalBytes - fs_info.usedBytes;
    MyOut = String(Flashfree );

Getting this as the compiler error. I am not too familiar with these Structs

Code: Select allFunctions_and_var_management.ino: In function 'String GetMeThatVar(String)':
Functions_and_var_management.ino:139:25: error: no matching function for call to 'fs::FS::info(FSInfo*)'
Functions_and_var_management.ino:139:25: note: candidate is:
In file included from ESP8266Basic.ino:31:0:
C:\Users\user\AppData\Roaming\Arduino15\packages\esp8266\hardware\esp8266\2.0.0-rc1\cores\esp8266/FS.h:96:10: note: bool fs::FS::info(uint32_t*, uint32_t*)
     bool info(uint32_t *total, uint32_t *used);
          ^
C:\Users\user\AppData\Roaming\Arduino15\packages\esp8266\hardware\esp8266\2.0.0-rc1\cores\esp8266/FS.h:96:10: note:   candidate expects 2 arguments, 1 provided
no matching function for call to 'fs::FS::info(FSInfo*)'



Serial terminal in the chrome browser see https://serialTerminal.com

http://esp8266basic.com
A BASIC interpreter for your ESP

Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com