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GHI Electronics,LLC USBwiz User Manual

1. USBwiz Functions

6. 1. USBwiz Functions

6.1. Commander

The commands and response in USBwiz are made in a way where they can be

understood and read by a human and can be easily parsed by any simple 8-bit micro.

Each command is 2 characters. Some commands take parameters and others don’t. For

example, VR command doesn’t take any parameters and it returns the version number. On

the other hand, MD requires parameter to run. MD creates (makes) a folder on the

accessed media device. ‘MD LOG’ creates a folder with the name LOG.

Note: Commands has specific format, please refer to USBwiz Command Set.

6.2. FAT Storage Media

USBwiz can connect to two kinds of storage media types. The media types are SD/MMC

cards and USB Mass Storage device (SCSI command subclass, bulk only protocol) which

includes thumb flash, USB hard drives and card readers. USBwiz supports three

simultaneous FAT devices. Keep in mind that all devices must be formatted FAT12, FAT16

or FAT32.

USBwiz can mount up to 3 File System Medias that are independent from each other,

which means that all opened files and operations in one file system has no effect on the

others. This gives USBwiz very great capability of flexible switching between the file

system Medias and providing other valuable functions like reading from file in one Media

and writing back in other file in another media at the same time.

To access FAT Storage Media, the media need to be mounted using FAT Mount command.

Once the device is mounted, you can use any of the file access commands.

Example: Mount File System on SD/MMC:

FM S

MD FOLDER

Directories (Folders)

Folders are supported by USBwiz. Use Change Directory command (CD) to change

Folders.

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