DOSonChip to VINCULUM 2 usb

We have at present a PCB that uses a DOSonChip unit that we use to store information to a microMC memory card. This is proving to be unpopular so we need to convert this to a USB memory stick instead.

The work will involve redesign of the PCB to replace the Dosonchip with USB and also the a relevant software to drive this. The existing file writing code should work seamlessly with the new USB interface.

All work to be done in C using AVR studio.

We will supply existing design and hardware and will require working and tested prototype in return.

The code should be clean , well commented and bug free.

The USB unit we are using is called VNC2 - Vinculum-II Programmable USB 2.0 Host

Several functions will need to be implemented as follows

FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */

FRESULT f_open (FIL*, const char*, BYTE); /* Open or create a file */

FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */

FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */

FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */

FRESULT f_close (FIL*); /* Close an open file object */

FRESULT f_opendir (DIR*, const char*); /* Open an existing directory */

FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */

FRESULT f_stat (const char*, FILINFO*); /* Get file status */

FRESULT f_getfree (const char*, DWORD*, FATFS**); /* Get number of free clusters on the drive */

FRESULT f_truncate (FIL*); /* Truncate file */

FRESULT f_sync (FIL*); /* Flush cached data of a writing file */

FRESULT f_unlink (const char*); /* Delete an existing file or directory */

FRESULT f_mkdir (const char*); /* Create a new directory */

FRESULT f_chmod (const char*, BYTE, BYTE); /* Change file/dir attriburte */

FRESULT f_utime (const char*, const FILINFO*); /* Change file/dir timestamp */

FRESULT f_rename (const char*, const char*); /* Rename/Move a file or directory */


Skills: C Programming, Electrical Engineering, Electronics, Embedded Software

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About the Employer:
( 33 reviews ) Halmstad, Sweden

Project ID: #1292818

3 freelancers are bidding on average $750 for this job


I have done lots of embedded systems projects.......check PMB, thanks.

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