Compact FlashCard Driver

The compact flash card driver library is written by Josef Franz Vögel. He can be contacted via the BASCOM user list.

Josef has put a lot of effort in writing and especially testing the routines.

Josef nor MCS Electronics can be held responsible for any damage or data loss of your CF-cards.

Compact flash cards are very small cards that are compatible with IDE drives. They work at 3.3V or 5V and have a huge storage capacity.

The Flash Card Driver provides the functions to access a Compact Flash Card.

At the moment there are six functions:

DriveCheck, DriveReset , DriveInit , DriveGetIdentity , DriveWriteSector , DriveReadSector

The Driver can be used to access the Card directly and to read and write each sector of the card or the driver can be used in combination with a file-system with basic drive access functions.

Because the file system is separated from the driver you can write your own driver.

This way you could use the file system with a serial EEPROM for example.

For a file system at least the functions for reading (DriveReadSector / _DriveReadSector) and writing (DriveWriteSector / _DriveWriteSector) must be provided. The preceding under slash _ is the label of the according asm-routine. The other functions can, if possible implemented as a NOP – Function, which only returns a No-Error (0) or a Not Supported (224) Code, depending, what makes more sense.

For writing your own Driver to the AVR-DOS File system, check the ASM-part of the functions-description.

Error Codes:

Code	Compiler – Alias	Remark
0	CpErrDriveNoError	No Error
224	cpErrDriveFunctionNotSupported	This driver does not supports this function
225	cpErrDriveNotPresent	No Drive is attached
226	cpErrDriveTimeOut	During Reading or writing a time out occurred
227	cpErrDriveWriteError	Error during writing
228	cpErrDriveReadError	Error during reading