Admin: Created page with "The compact flash card driver library is written by Josef Franz Vögel. He can be contacted via the BASCOM user list. Josef h..."

2013-02-13T10:45:00Z

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

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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:

 
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|- style="vertical-align: top;"
| valign="top" width="18%" bgcolor="#ffff99" style="width: 107px; background-color: rgb(255, 255, 153); border: 1px solid rgb(0, 0, 0);" |
Code

| valign="top" width="43%" bgcolor="#ffff99" style="width: 263px; background-color: rgb(255, 255, 153); border: 1px solid rgb(0, 0, 0);" |
Compiler – Alias

| valign="top" width="100%" bgcolor="#ffff99" style="width: 239px; background-color: rgb(255, 255, 153); border: 1px solid rgb(0, 0, 0);" |
Remark

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
0

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
CpErrDriveNoError

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
No Error

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
224

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
cpErrDriveFunctionNotSupported

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
This driver does not supports this function

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
225

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
cpErrDriveNotPresent

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
No Drive is attached

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
226

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
cpErrDriveTimeOut

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
During Reading or writing a time out occurred

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
227

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
cpErrDriveWriteError

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
Error during writing

|- style="vertical-align: top;"
| valign="top" width="18%" style="width: 107px; border: 1px solid rgb(0, 0, 0);" |
228

| valign="top" width="43%" style="width: 263px; border: 1px solid rgb(0, 0, 0);" |
cpErrDriveReadError

| valign="top" width="100%" style="width: 239px; border: 1px solid rgb(0, 0, 0);" |
Error during reading

|}
</div>
 

 

At the [http://www.mcselec.com/index.php?option=com_content&task=view&id=87&Itemid=57 MCS Web AN] section you can find the application note 123.

 

 

More info about Compact Flash you can find at :

 

[http://www.sandisk.com/download/Product%20Manuals/cf_r7.pdf http://www.sandisk.com/download/Product%20Manuals/cf_r7.pdf]

 

 

A typical connection to the micro is shown below.

 

 

[[File:Cfcard.gif|center|cfcard]]

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[[Category:CF Card]]

Compact FlashCard Driver - Revision history

Admin: Created page with "The compact flash card driver library is written by Josef Franz Vögel. He can be contacted via the BASCOM user list. Josef h..."