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 user interface.

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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
            Tel: 01932 829460
            email: press@computer-solutions.co.uk
            web: www.computer-solutions.co.uk

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