fatfs in AM335x starterware

Hydrogen Chen

Hi,

I'm reading the code about FATFS of AM335x in the starterware (AM335X_StarterWare_02_00_01_01). In file ff.h(dir/of/starterware/third_party/fatfs//src/ff.h), has the configuration #define _MCU_ENDIAN 2(big endian), but gcc and ccs generates code little endian.Why define _MCU_ENDIAN 2 as big endian in the code?

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Moving this to the Starterware forum.

0 qxc over 12 years ago

Genius 5820 points

Mode 2 defines bytewise access, so endianess does not matter in this mode.

0 Vineeth Balan over 12 years ago in reply to qxc

TI__Intellectual 1640 points

Hi,

As Hans has said Mode 2 defines bytewise access and hence it works for all endianess. The macro is given so that users can obtain better performance .

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fatfs in AM335x starterware