SD Card

SdCard.inc

SdCard.inc has two sub-includes:

1. Fat.inc - Provides support for SD cards formatted with FAT16/FAT32 file systems.

2. NoFat.inc - Handles procedures for SD cards without a file system.

These sub-includes contain the following user-oriented procedures:

- FAT16 / FAT32 System

- TftBmpFromSD() 

- File_Init()

- File_CreateDir()

- File_DeleteDir()

- File_RenameDir()

- File_Exists()

- File_DirExists()

- File_Create()

- File_Open()

- File_OpenAt()

- File_Append()

- File_ReadByte()

- File_WriteByte()

- File_Flush()

- File_DeleteFile()

- File_Close()

- File_Rename()

- File_DiskFull()

- File_Size()

- File_SizeOpen()

- File_TimeModified()

- File_TimeCreated()

- File_EOF()

- File_ListReset()

- File_ListDir()

- File_ListFile()

- File_ChDir()

- File_ChDirUp()

- File_FreeSpaceKB()

- File_DiskSizeKB()

- RAW / No file system

- TftBmpFromSdRaw()

- TftRgbFromSdRaw()

- SdRaw_Init()

- SdRaw_ReadSector()

- SdRaw_WriteSector()

- SdRaw_ReadByte()

- SdRaw_WriteByte()

The SdCard.inc file includes global variables that, if not needed, can significantly reduce RAM usage. To save RAM, you can declare the SDCardUsed define to specify whether the SD Card is in use. Additionally, the SDCardFatUsed define must be defined to indicate whether the card is formatted with FAT16/FAT32. If this macro is not defined, the SD card will be treated as a raw memory device. This helps conserve both code memory and RAM.

This SdCard.inc file is based on the original FILESYS24_INC, written by Les Johnson, the author of the Positron 8-bit and 16-bit PIC BASIC Compilers. I have modified it to improve stability, added extra functionality, and adjusted the SD card library to be compatible with both 16-bit and 8-bit PIC microcontrollers.

You can use the SdCard.inc file for other purposes, similar to FILESYS24_INC, with the added benefits of 16-bit and 8-bit MCU support, along with additional commands.

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