cannot convert 'FILE*' {aka '__sFILE*'} to 'FIL*'

[Alberto_isorna]

I'm trying to compress to jpeg an image to save it on the sd card and read it. 

I'm using the AN examples (AN12110.pdf) on the iMXRT1064 board.

I can't compile because when I try to f_open the file I have the following problem: 

cannot convert 'FILE*' {aka '__sFILE*'} to 'FIL*'

The thing is my file should be an FILE object in order to process it well with JPEGLIB, if I change it to FIL I have other problems with Jpeglib, i just want to save a photo in the sd.

Could you please help me how could I manage this? 

Also in the example in (AN12110.pdf) they use the function with a FILE not a FIL.

Find attached the main code problem at line 797 and just the function. 

[Alexis_A · Accepted solution]

Hello @Alberto_isorna ,

Looking at the FIL and FILE data type in the jconfig.h in the AN12110 software it looks like these are the same:

If this is the case, you should be able to cast to FILE/FIL if not using the same data type cause issues with the compiler.

Best Regards,

Alexis Andalon