TMS570LC4357: SD Card - FAT32

Hamdy Elasawy

Part Number: TMS570LC4357

Greeting,

i'm having difficulty in interfacing with sd card and making a txt file using fat32 filing system.

the main problem is fat32 uses Little endian, TMS570lc only supports BE32.

is there is a library or a helper code or a guide that interfaces TMS570LC with fat32 filing system?

Thanks in Advance.

over 6 years ago

0 QJ Wang over 6 years ago

TI__Guru**** 199026 points

Hello Hamdy,

You can use this function to swizzle the data read from or write to the SDCARD:

uint32 SwizzleData(uint32 word)

{

#if ((__little_endian__ == 1) || (__LITTLE_ENDIAN__ == 1))

return word;

#else

return __rev(word);

#endif

}

0 Hamdy Elasawy over 6 years ago in reply to QJ Wang

Prodigy 145 points

is there is a library or a helper code or a guide that interfaces TMS570LC with fat32 filing system?

0 Hamdy Elasawy over 6 years ago in reply to QJ Wang

Prodigy 145 points

Greetings QJ Wang

What i'm Asking for is there is a helper code that interfaces FAT32 Filing System with A BE MCU

0 QJ Wang over 6 years ago in reply to Hamdy Elasawy

TI__Guru**** 199026 points

Hello Hamdy,

No, we don't have library or example code to interface FAT32 on a bug endian device. I developed an example to read/write an SDCARD on RM48 HDK which is little endian device. You can use the example for LE device, but the data (read/write) should be swizzled using this function.