Mikroelektronika MIKROE-742 데이터 시트

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

function Mmc_Fat_Init(): byte;

- 

0

- if MMC/SD card was detected and successfully initialized 

- 

1

- if FAT16 boot sector was not found 

- 

255

- if MMC/SD card was not detected 

Initializes MMC/SD card, reads MMC/SD FAT16 boot sector and extracts neces-
sary data needed by the library.

Note: MMC/SD card has to be formatted to FAT16 file system. 

Global variables : 

- 

Mmc_Chip_Select

: Chip Select line 

- 

Mmc_Chip_Select_Direction

: Direction of the Chip Select pin 

must be defined before using this function. 
The appropriate hardware SPI module must be previously initialized. See the
SPI1_Init, SPI1_Init_Advanced routines. 

// init the FAT library

if (Mmc_Fat_Init() = 0) then