Small embedded systems can now support SNMP and Wireless Ethernet functionality
Computer Solutions has introduced an enhanced version of the CMX-MicroNet
TCP/IP stack offering SNMP (Simple Network Management Protocol) and Wireless
Ethernet 802.11b functionality as well as supporting additional processors.
As well as adding the 68HCS12 and dsPIC to the long list of 8- and 16-bit
chips that can run MicroNet, a version is now available to support the
increasing number of single-chip ARM CPUs.
The new SNMP add-on option is a memory-efficient, highly portable, complete
software development kit designed for embedded systems developers requiring
remote network management as provided by SNMP V1 or SNMP V2c for their
applications running on processors with limited memory resources.
The SNMP implementation features a very small footprint which is suitable
for inclusion in the internal memory of single-chip processor designs
already supported by CMX-MicroNet. As a result, it provides system designers
and software developers with a simple, cost-effective means to create a wide
variety of hardware devices that can connect directly to corporate networks.
The SNMP option requires as little as 8 kbyte of memory on an 8051, involves
no memory management or multitasking features, and supports SET, GET, NEXT,
TRAP, and GETBULK functions. Code is implemented to facilitate the
request-response mechanism of SNMP.
The Wireless Ethernet option supports the IEEE 802.11b protocol, allowing
the TCP/IP stack to be integrated into Wi-Fi systems operating at 2.4 GHz
with data rates of up to 11 Mbit/s. The initial release supports the
Intersil Prism 2.5 wireless MAC. The driver can be used in infrastructure
mode (using an access point) or in 'ad hoc' mode (without an access point.)
CMX-MicroNet(TM) is a TCP/IP software stack that provides low-cost Internet
access for a wide range of embedded microprocessors. Unlike other
Internet-enabling solutions, it allows TCP/IP and other protocols to be run
directly on the embedded processor without the need for proprietary
protocols, gateways, or additional hardware.
CMX-MicroNet provides direct serial links, PPP based modem communications,
Ethernet or 802.11b drivers. A web server application that runs on the micro
can use any of these to talk to a normal PC-based browser using the HTTP
protocol. The user can then set values on the micro, cause functions to be
executed and read back variables displayed by the browser. In this way, full
access to the micro is provided via the browser's familiar Windows graphical
- ends -
Computer Solutions Ltd. is the UK's premier
supplier of microprocessor development tools. It supplies a wide range of
software and hardware tools that support over 100 different microprocessor
families. Hardware products include: BDM and JTAG interfaced debuggers,
In-circuit emulators , EPROM emulators USB, Ethernet, RS232 & CAN
analysers and device programmers. Software tools include: assemblers,
debuggers, compilers, real-time executives, TCP/IP stacks and other
high-level protocol libraries.
With 25 years' experience, Computer Solutions Ltd. has unrivalled expertise
in embedded tools, consultancy and support.
For further colour photographs, graphics, technical or marketing information,
Contact: Chris Stephens, MD, Computer Solutions Ltd
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For more information on MicroNet :
CMX's Web Site