TM_FATFS_Functions

Library Functions. More...

Functions
FRESULT	TM_FATFS_GetDriveSize (char *str, TM_FATFS_Size_t *SizeStruct)
FRESULT	TM_FATFS_DriveSize (uint32_t *total, uint32_t *free)
	Gets SDCARD drive size and free space. More...
FRESULT	TM_FATFS_USBDriveSize (uint32_t *total, uint32_t *free)
	Gets USB drive size and free space. More...
FRESULT	TM_FATFS_TruncateBeginning (FIL *fil, uint32_t index)
	Truncates beginning of file. More...
uint8_t	TM_FATFS_CheckCardDetectPin (void)
	Checks card detect pin (if activated) if card is inserted. More...

Detailed Description

Library Functions.

Function Documentation

uint8_t TM_FATFS_CheckCardDetectPin

(

void

)

Checks card detect pin (if activated) if card is inserted.

Note

Pin must be set low in order to get card inserted, otherwise card is not inserted

Card detect pin must be activated in order to get this functionality to work

Parameters

None

Return values

Card	detected status: 0: Card is not inserted > 0: Card is inserted

FRESULT TM_FATFS_DriveSize	(	uint32_t *	total,
		uint32_t *	free
	)

Gets SDCARD drive size and free space.

Note

Function is deprecated and will be removed, use TM_FATFS_GetDriveSize instead!

Parameters

*total	Pointer to variable to store total size of SDCARD
*free	Pointer to variable to store free space on SDCARD

Return values

FRESULT

structure members. If data are valid, FR_OK is returned

FRESULT TM_FATFS_TruncateBeginning	(	FIL *	fil,
		uint32_t	index
	)

Truncates beginning of file.

Example:

• You have a file, its content is: "abcdefghijklmnoprstuvwxyz",
• You want to truncate first 5 bytes,
• Call TM_FATFS_TruncateBeginning(&opened_file, 5);
• You will get new file data: "fghijklmnoprstuvwxyz"

Parameters

*fil	Pointer to already opened file
index	Number of characters that will be truncated from beginning

Note

If index is more than file size, everything will be truncated, but file will not be deleted

Return values

FRESULT

struct members. If everything ok, FR_OK is returned

FRESULT TM_FATFS_USBDriveSize	(	uint32_t *	total,
		uint32_t *	free
	)

Gets USB drive size and free space.

Note

Function is deprecated and will be removed, use TM_FATFS_GetDriveSize instead!

Parameters

*total	Pointer to variable to store total size of USB disk
*free	Pointer to variable to store free space on USB disk

Return values

FRESULT

structure members. If data are valid, FR_OK is returned