TDA2PXEVM: Linux: undefined reference to f_open

Pratik Brid

Intellectual 750 points

Part Number: TDA2PXEVM

Hi all

I want to read the data from filesystem either from sdcard or emmc

so in the usecase file chains_nullSrc_Display.c i have inluded files

#include <ti/drv/stw_lld/fatlib/hsmmcsd_API.h>
#include <ti/drv/stw_lld/fatlib/fatfs/ff.h>

and in function Void Chains_nullSrc_DecodeDisplay(Chains_Ctrl *chainsCfg) i have mentioned

const TCHAR *filename = "t.txt";
FIL fp;
FRESULT fresult;

fresult = f_open (&fp,&filename, FA_CREATE_NEW);

The structures FIL , FRESULT are being called from ff.h without errors but f_open is showing "undefined reference to f_open"

Regards

Pratik

over 5 years ago

0 Pratik Brid over 5 years ago

Intellectual 750 points

Hi all

just an update the fopen function is as below syntax.

result = f_open (&fp,filename, FA_CREATE_NEW);

0 Yordan Kamenov over 5 years ago in reply to Pratik Brid

TI__Mastermind 42515 points

Hi Pratik,

those fatlib APIs are used in RTOS cases.

In Linux you can try to use the file read/write functions defined in vision_sdk/links_fw/src/hlos/osa/src/osa_file.c or directly use standard fopen/fread/fwrite/fclose API.

Regards,

Yordan

0 Pratik Brid over 5 years ago in reply to Yordan Kamenov

Intellectual 750 points

Hi Yordan

Thanks for the update.

will these API's fopen() fclose() work to read and write files to EMMC ?

0 Pratik Brid over 5 years ago in reply to Yordan Kamenov

Intellectual 750 points

Hi Yordan

I have used this api's as my usecase is in hlos and my alg_plugin is in rtos.

so the fopen() and fopen() api's are working properly.

When i use the fatlib API'S in the alg_plugin which is in rtos then again it;s showin "undefined reference to f_open"

Could you please guide regarding the same.

Thanks

Pratik

0 Yordan Kamenov over 5 years ago in reply to Pratik Brid

TI__Mastermind 42515 points

Hi Pratik,

can you try a clean build:

make clean

make -s -j depend

make -s -j

Regards,

Yordan

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TDA2PXEVM: Linux: undefined reference to f_open