MMnet101_en.pdf

M M n e t1 0 1

Ethernet Minimodule

User’s

Manual

REV 0.9

Many ideas one solution

Contents

1 INTRODUCTION ....................................................................................................................................... 4

A PPLICATIONS .............................................................................................................................................. 5

F EATURES .................................................................................................................................................... 5

CONSTRUCTION OF THE MODULE ............................................................................................... 5

B LOCK DIAGRAM .......................................................................................................................................... 5

M ODULE PIN - OUT ......................................................................................................................................... 7

AT MEGA 128 MICROCONTROLLER ............................................................................................................. 13

E THERNET CONTROLLER LAN91C111 ..................................................................................................... 13

M EMORY CONTROLLER .............................................................................................................................. 14

RAM MEMORY ........................................................................................................................................... 15

D ATA F LASH MEMORY ................................................................................................................................. 15

RESET CIRCUIT ........................................................................................................................................ 16

LED DIODES ............................................................................................................................................... 16

CONNECTION OF THE MODULE WITH THE EXTERNAL WORLD ....................................... 17

C ONNECTION TO THE E THERNET NETWORK ............................................................................................. 17

RS-232 INTERFACE ................................................................................................................................... 18

RS-485 INTERFACE ................................................................................................................................... 18

USB INTERFACE ........................................................................................................................................ 19

R ADIO LINK ................................................................................................................................................. 19

LCD DISPLAY ............................................................................................................................................. 20

PROGRAMMING THE MODULE ..................................................................................................... 20

ISP CONNECTOR ........................................................................................................................................ 20

JTAG CONNECTOR .................................................................................................................................... 22

AN APPLICATION EXAMPLE ......................................................................................................... 23

EVALUATION BOARD ...................................................................................................................... 23

SPECIFICATIONS .............................................................................................................................. 24

TECHNICAL ASSISTANCE ............................................................................................................. 24

GUARANTEE ...................................................................................................................................... 24

ASSEMBLY DRAWINGS .............................................................................................................. 25

DIMENSIONS .................................................................................................................................. 26

SCHEMATICS ................................................................................................................................. 26

1 Introduction

Thank you very much for having bought our minimodule MMnet101 . It was created with the idea

of facilitating the communication of microprocessor systems through the Internet/Ethernet

networks.

The heart of the module is the RISC Atmega128 microcontroller with 128kB of program memory

and 64kB of (external) RAM memory, co-operating with the Ethernet LAN91C111 controller

(100BaseTX). The minimodule has an 512kB DataFlash serial memory for storage of WWW

pages and of any files e.g. with measurement data. The memory is connected to a fast SPI bus

with 8 Mb/s transmission speed.

MMnet101 operates under real-time control RTOS allowing to build applications with the use of

pseudo-concurrency in which different tasks are started and executed in the form of separate

threads. This permits an easy construction of applications which require parallel execution of

several tasks, for example servicing the TCP/IP stack and realizing the algorithm of control of an

industrial process. The RTOS system has an extended interface for handling peripheral

equipment, thanks to which the communication with them occurs via drivers registered in the

system. The system has drivers for the Ethernet controller, serial ports, the 1-Wire bus, the DS

1820 thermometer, LCD display RTC clock and DataFlash memory. The kernel of the RTOS

system and the TCP/IP stack together with implemented DHCP, UDP, ICMP, SMTP protocols and

HTTP with simple CGI-s were compiled to libraries.

The system incorporates a series of demonstration applications (WWW server, FTP, Telnet, TCP

client, TCP server, temperature monitoring and control, applications in the RTOS system) which

are basing on completed functions present in the IP stack and RTOS operating system libraries.

Attached libraries permit independent experiments (e.g. creation of web pages using the CGI

technique without penetrating the lower layers of the IP stack and the RTOS operating system).

The MMnet101 is delivered loaded with the WWW Server application and WWW demonstration

pages with examples of using CGI and Flash. The configuration of the server (MAC address, IP,

gateway, change of WWW page) can be effected remotely through serial RS232 or FTP ports.

Sources in C-language and ready libraries are attached to the server; they can be used to realize

one’s own projects. To modify and compile, the free C-compile GCC or C-compiler from

ImageCraft can be put into use.

We wish you nothing but success and a lot of satisfaction in designing and

developing new electronic equipment based on the MMnet101 minimodule.

Applications

The MMnet101 minimodule can be used as a design base for electronic circuits co-operating from the

Ethernet/Internet network, covering the following areas of interest:

Industrial remote controlling and monitoring systems

Telemetry

Intelligent buildings

Alarm systems

Weather stations and environment monitoring

Medical electronics

Heating and air-conditioning systems

Telecommunication

Road traffic monitoring

Remote data logging

Home automation

The MMnet101 minimodule can be also used in didactic workshops of information and electronic schools,

illustrating the aspects of co-operation of electronic circuits from the Ethernet/Internet network, as well as be

used to construct thesis circuits.

Features

Fast RISC microcontroller ATmega128 with up to 16 MIPS throughput

Ethernet controller IEEE 802.3 10/100Mb/s LAN91C111

128kB of in circuit programmable FLASH program memory

64KB of RAM memory

4kB of EEPROM memory

Serial DataFlash memory 4Mbits (512kBytes)

Reliable reset circuit

Crystal resonator 14.7456 or 16 MHz

4 LED diodes indicating: power, LAN activity, DataFlash activity

Fully SMD made on 4-layer PCB

1 x 20 terminals with 0.1" (2.54mm) pitch fitting every prototype board

Available free operating system with TCP/IP stack supporting many protocols

Available evaluation board and sample applications

Small dimensions: 56mm x 30.5mm

Construction of the module

Block diagram

The block diagram of the MMnet101 minimodule is shown in the drawing:

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: