Freescale Semiconductor MCF51CN128 User manual

TCP/IP Applications Using the

MCF51CNFamily—Designer Reference

Manual

Device Supported: MCF51CN Microcontrollers

Document Number: DRM114

Rev. 0, 12/2009

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009

Freescale Semiconductor2

Contents

PageTitleSection Number

Chapter 1

Introduction

Overview...........................................................................................................................................................................51.1

Key Features.....................................................................................................................................................................51.2

Advantages........................................................................................................................................................................81.3

Development Tools...........................................................................................................................................................81.4

Top and Bottom View of the MCF51CN128 Reference Design Hardware......................................................................81.5

How the MCF51CN128 Reference Design FitsYour System..........................................................................................91.6

Chapter 2

Hardware Description

Hardware.........................................................................................................................................................................132.1

Minimal System Features...............................................................................................................................................132.2

Demo System Features...................................................................................................................................................142.3

Connection Between Minimal System and Demo System Features...............................................................................152.4

Hardware Block Diagram...............................................................................................................................................162.5

Pinout Description..........................................................................................................................................................182.6

MCF51CN128 Reference Design Board Power Options...............................................................................................192.7

Hardware Considerations................................................................................................................................................202.8

Chapter 3

Firmware Description

Firmware.........................................................................................................................................................................213.1

Firmware Organization...................................................................................................................................................213.2

Block Diagram................................................................................................................................................................223.3

System Startup................................................................................................................................................................233.4

Internal Functionality of Socket Layer...........................................................................................................................243.5

Chapter 4

System Setup

Getting Started................................................................................................................................................................274.1

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009 3Freescale Semiconductor

PageTitleSection Number

Install Software...............................................................................................................................................................274.2

Hardware Setup...............................................................................................................................................................274.3

HTTP Server Functionality.........................................................................................................................284.3.1

Email Client Functionality..........................................................................................................................314.3.2

FTP Server Functionality.............................................................................................................................324.3.3

Serial Bridge Functionality..........................................................................................................................344.3.4

Principle of Operation.....................................................................................................................................................354.4

Serial Conﬁguration Commands....................................................................................................................................364.5

Support............................................................................................................................................................................394.6

Appendix A

Additional Files...............................................................................................................................................................41A.1

Appendix B

Bill of Materials (BOM).................................................................................................................................................43B.1

Appendix C

Schematics......................................................................................................................................................................47C.1

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009

Freescale Semiconductor4

Chapter 1

Introduction

1.1 Overview

This reference manual describes using the MCF51CN128 reference design hardware

to run the following TCP/IP applications:

•SCI/SPI to Ethernet

•Web Server

•Email Client

•FTP Server

All hardware schematics diagram, gerber ﬁles,Allegro hardware source ﬁles, board pictures,

and ﬁrmware source codes are available in reference materials.All hardware ﬁles and

software can be reused to enable directly TCP/IP connectivity in customized applications.

For details about the technical implementation of the reference design main features, refer

to the following documents:

•Application note titled Serial-to-Ethernet Bridge Using MCF51CN Family and

FreeRTOS (document AN3906)

•Application note titled Web Server Using MCF51CN Family and FreeRTOS (document

AN3928)

•Application note titled Email Client Using MCF51CN Family and FreeRTOS (document

AN3930)

•Application note titled FTP Server Using MCF51CN Family and FreeRTOS (document

AN3931)

1.2 Key Features

•Uses Freescale ColdFire V1 Core MCF51CN128 48-pin QFN package running up

to 50.33 MHz

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009 5Freescale Semiconductor

•Low cost board in a minimal size of 2.89’’× 1.55’’. Ethernet Minimal System is 1.15’’

× 1.55’’.

•For the MCF51CN128 reference design hardware, power can be applied to both unused

pairs from the RJ45 cable. Therefore, power through the jack is not required. For more

details go to Section 2.7.

•The following TCP/IP services are implemented.

DHCP Client Service:•IP dynamic address (DHCP) or static support at runtime•

•Serial Bridge

A UART or SPI to Ethernet bridge is implemented using the socket approach.•

•Supports client or server implementation that allows connecting two serial

bridges using the Internet.

•An always enabled web page can conﬁgure all interfaces and bridge settings.

A reset command can be sent through the web page to make settings take effect.

•The following settings can be changed or shown at runtime through the

conﬁguration web page or at compile time:

•MAC address

•IP address

•IP mask address

•IP gateway address

•Server address to connect as a client

•Static or dynamic IP address

•TCP port to connect or bind to

•TCP client or server implementation

•Conﬁguration or bridge implementation

•UART port

•UART baudrate

•UART parity

•UART number of bits

•UART number of stop bits

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009

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Key Features

•UART ﬂow control

•SPI port

•SPI baudrate

•SPI polarity

•SPI phase

•SPI master or slave

•SPI polling or interrupt handling

•Using hardware and software ﬂow control for the RS232 interface

•Presence of RS485 transceiver and connector

•The bridge can be conﬁgured through the UART interface using a set of

commands explained in Section 4.5

•For the MCF51CN128 reference design hardware, power can be applied to pin

6 of the UART connector. Therefore, the power jack is not required. Refer to

Figure 2-5 for more details.

•An accelerometer by SPI is on-board to test SPI bridge.

•HTTP Server Service

•Supports HTTP with the following services:

•HTTP 2.0—Persistent connections or keep-alive sessions

•SSI—Server side include (SSI) directives

•AJAX—Used to give the illusion that a web page changes without

refreshing it

•FORMS (POST request)

•CGI—(POST request) common gateway interface support

•Tasks status though a web page

•Email Client Service

•Assigned IP is sent via email if the dynamic IP is used.

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009 7Freescale Semiconductor

Chapter 1 Introduction

•FTP Server Service

•Stores information using FAT and then makes it accessible using FTP

•FTP is mounted over an SD card reader

1.3 Advantages

•The MCF51CN128 is a low cost MCU that can enable Ethernet/TCP/IP connectivity

to any embedded design.

•Software source codes are available to directly use in a customer application. It also

allows customer changes or customizations.

•Hardware ﬁles are provided for free. If a change in hardware is required for a customized

design, hardware source ﬁles can be edited.

•The MCF51CN128 MCU can obtain power from connectors like the RJ45 and DB9.

•For support enter a service request at, www.freescale.com/support.

1.4 DevelopmentTools

•CodeWarrior V6.2.1 is used to download the software application.

•A proper Ethernet cable must be selected depending on the Ethernet element that is the

PC, hub, switch, or router.

1.5 Top and BottomView of the MCF51CN128 Reference Design

Hardware

The following ﬁgures describe the top and bottom view of the board. A hardware block

diagram is shown in Figure 2-2. For details about components, go to Sections 2.2 and Section

2.3.

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009

Freescale Semiconductor8

Advantages

Figure 1-1.Top view of MCF51CN128 reference design hardware

Figure 1-2. Bottom view of MCF51CN128 reference design hardware

1.6 How the MCF51CN128 Reference Design FitsYour System

The following ﬁgures show how the system ﬁts into some TPC/IP applications. Speciﬁc

features are explained in the Section Firmware. The ﬁgures show reference design squared

by a red box.

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009 9Freescale Semiconductor

Chapter 1 Introduction

Figure 1-3. Serial bridge in Bridge mode

Figure 1-4. Serial bridge in Configuration mode

Figure 1-5.Web server implemented at MCF51CN family providing HTTP services, one

client at a time

TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009

Freescale Semiconductor10

How the MCF51CN128 Reference Design FitsYour System

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