There are many software which are able to add or remove the MBR from sector 0, for example formatting the MMC/SD card with the following two tools will add MBR: Generally, the very first sector (sector 0) of the SD card contains the MBR or the file system (FAT16, FAT32 …) boot.įormatting the MMC/SD card with Windows may do no thing to the very first sector (sector 0) and keep it as it is depending on which it contains (MBR or file system boot). If the MMC/SD card has Master Boot Record (MBR), the library will work with the first partition.

The user functions for both libraries are included with the files and there is no need to put them here. The default file system of the the library is FAT32 which is recommended because it’s more tested, if you want to use FAT16 file system just define it in your project source code (ie: #define FAT16). The FAT library has the name fat_m.c and it can be downloaded from the link below: The new MMC/SD card driver supports MMC, SD (SDSC) and SDHC cards and it has the name mmcsd_m.c and it can be downloaded from the link below:įAT (FAT16 and FAT32) library for CCS C compiler download: MMC/SD card driver for CCS C compiler download: *** For microcontrollers with limited RAM and ROM there is another FAT library for reading files from SD cards, it supports FAT16 and FAT32 at the same time and works with MMC, SD and SDHC cards: The other library which is the FAT library also does not support even medium size cards (for example 2GB SD card). But unfortunately the MMC/SD card driver has some small bugs (if I can say that) and does not support most of the MMC/SD cards available on the market today including SD and SDHC cards. This compiler comes with many drivers and libraries, two of them are MMC/SD card driver (file: mmcsd.c ) and FAT library (file: fat.c ), the FAT library supports FAT16 and FAT32 file systems where the user has to choose between them (not both at the same time), hence the RAM usage is lower. The CCS C compiler is one of the best Microchip PIC® compilers especially when we talk about code optimization.

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