Hello Weining,
Indeed, there are some examples for USB + fatfs on KSDK 1.3 version that do not use any RTOS (they are BareMetal). You can give a look to these examples at: <KSDK_1_3_PATH>\examples\<BOARD>\demo_apps\usb\<DEVICE_OR_HOST>\msd\BM\<IDE>.
Here you can find Fatfs documentation: FatFs - Generic FAT File System Module
And also, here is a document for USB + Fatfs + Processor Expert reference that might be helpful for you: USB Host Project with KSDK 1.3 and Processor Expert
Hope this helps!
Regards,
Isaac
Hello Weining,
Indeed, there are some examples for USB + fatfs on KSDK 1.3 version that do not use any RTOS (they are BareMetal). You can give a look to these examples at: <KSDK_1_3_PATH>\examples\<BOARD>\demo_apps\usb\<DEVICE_OR_HOST>\msd\BM\<IDE>.
Here you can find Fatfs documentation: FatFs - Generic FAT File System Module
And also, here is a document for USB + Fatfs + Processor Expert reference that might be helpful for you: USB Host Project with KSDK 1.3 and Processor Expert
Hope this helps!
Regards,
Isaac