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

See more: vinculum, dosonchip, vinculum flush, vinculum usb, vnc2 fatfs, vinculum pcb design, vnc2 code, dosonchip vinculum usb, writing file, writing bug, writing get well card, writing studio, prototype move, prototype directory, pointer programming, pcb design studio, object writing, logical programming, free pcb design software, programming pointer, programming char, char programming, void, timestamp, prototype pcb

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.

$500 USD in 15 days
(0 Reviews)

ready to start

$750 USD in 45 days
(0 Reviews)

please see PMB

$1000 USD in 90 days
(0 Reviews)