ATEVK525 Mass Storage Board for AVR
3-15
7740B–AVR–03/08
Section 3
Software Implementation
This section contains information about the software package, its performance and
known limitations.
3.1
Software packages
When you have connected the boards together and correctly checked their
configuration, you are invited to run one of the available demonstration packages:
USB Device External Multi Disk Drives
. The board enumerates as a USB
composite Mass Storage device, and combines three external removable mass
storage media:
– MMC/SD memory card reader (depends on card used)
– NAND Flash 256MB (default, otherwise depends on chip used) disk
– DataFlash 8 MB disk
This package can be found on the CD-ROM provided with the kit.
USB Dual-Role Host / Device with FAT support and Shell
1.
In Device mode (B-connector plugged), the package is identical to the first
package, that enumerates three hardware storage volumes through the
USB.
2.
In Host mode (A-connector plugged), the application allows connecting one
USB mass storage device.
3.
In both modes, the STK525 can be connected to a serial terminal (using
HyperTerminal on PC side for example), where the user can access a simple
command line interpreter (ushell) to perform file system access (FAT man-
agement included in software):
– 57600 bps
– 8 bits data, 1 bit stop, no parity
– no flow control
4.
Navigation in the file system (on-board memories or USB Mass Storage
device connected to the USB Host interface) supports following commands:
–
a:
,
b:
... (goto selected drive)
