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EBS, Inc, the developer of the original DOS
file system, today announced Universal
Serial Bus (USB) device support for the EBS
ERTFS Pro embedded file system. ERTFS' USB
support provides a comprehensive, portable,
high performance USB subsystem solution for
embedded file system applications using
ERTFS Pro.
The USB host protocol stack for ERTFS Pro
contains the core protocol stack, the
required host controller device drivers, a
low-level communication API, and high-level
class drivers. Both USB 1.1 and 2.0
specifications are supported. Driver support
for all major USB 1.1 and 2.0 host
controller types (OHCI, EHCI, PHCI and UHCI)
are included; these controller types are
supported regardless of the vendor or model.
EBS' USB provides high-level class drivers
for mass storage devices (disks, memory
sticks, CD-ROMs, et al.). The mass storage
device class driver is integrated with ERTFS
Pro. A hub class driver is integrated into
the core USB protocol stack. High-level
class drivers for keyboards and mice are
also provided.
All USB data transfer types/protocols
(control, bulk, interrupt, and isochronous)
can be used to support high throughput and
real-time devices. Low-, full-, and
high-speed data transfer up to 12Mb/s on USB
1.1 and 480 Mb/s on USB 2.0 buses, plug and
play, and hot plugging are supported.
EBS' USB support is preconfigured to work
with ERTFS Pro, but can be ported to other
systems and device controllers. Like other
ERTFS products, the USB support is RTOS
independent and can run on any
microprocessor. While no multitasking kernel
is required, the file system and USB stack
are reentrant when a multitasking kernel is
used. All OS-dependent code is modularized
with a simple and small API containing
functions for system services and resource
management. A low-level API allows direct
access to a device. An application can query
a device's endpoints, supported transfer
types, and speeds, and then communicate
directly with the device.
"USB will rapidly dominate in the attached
device category of embedded devices,"
comments Peter Van Oudenaren, President of
EBS, and creator of the ERTFS DOS file
system. "The USB host protocol is complex.
EBS is pleased to offer a product that makes
it easier for developers to use this leading
edge technology."The EBS USB support for
ERTFS Pro is available now. For pricing
please call or contact sales@ebsembeddedsoftware.com |
