NXP Semiconductors LPC1768 Manuale utente

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 1 of 8

1.0 System Overview

The LPC1768 Industrial Reference Design (IRD) is a platform targeted at RTOS based embedded

systems. Designed around a flexible “Core” and “Base” Printed Circuit Board (PCB) concept, it

features many of the system functions and wired communications protocols found in today’s

embedded applications. The flexible design allows for changing of core and base boards, displays

and keypads as needed by the targeted application. The platform is powered from an external

5VDC power supply, and provides circuitry to measure current consumption of 3.3VDC while

operating the platform in different modes. Software development and debug are accomplished with

the use of a JTAG connection and Keil IDE development environment. Hardware circuitry is

incorporated to facilitate In-System-Programming (ISP), allowing software updates to be easily

loaded and demonstrated on the platform.

The version 1.3 kit features:

- NXP-designed (green PCB) LPC1768 core board

- NXP-designed base (green PCB) board

- A phone-style keypad board

- A 20X4 character LCD module

The platform provides demonstration software to perform functional test of the microcontroller

features, such as Ethernet, USB Device, UART, I²C, ADC, and GPIO ports. In the future, the

platform will support Micrium μC/OS-II Real Time Operating System (RTOS), and provides software

support for 10/100Base Ethernet, USB Host/Device, CAN, RS-232, and I2C wired communication

protocols. Additionally, the platform provides flexible interfaces for:

- Vacuum Fluorescent Displays (VFD) or Liquid Crystal Displays (LCD)

- UART expansion

- I2C expansion

- Application specific hardware through connection headers on the baseboard

QuickStart Guide

LPC1768 Industrial Reference Design Platform

System Development Kit Version 1.3

May 2009

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 2 of 8

2.0 Assembling the Hardware

2.1. Packing List

The IRD kit includes the following:

1. LPC1768 “Processor Core Board”

2. NXP Industrial Reference Design (IRD) “Baseboard”, version 1.3

3. LCD Display Lumex model# LCM-S02004DSR

4. Display ribbon cable (assembled on the LCD/VFD Display)

5. NXP I2C keypad, version 1

6. External temperature sensor (2N3906-type red/white cabled temperature sensor)

7. Condor 5VDC 2.5A power supply

8. Ethernet Cable

9. USB A/B cable

10. RS232 cable

11. Keil ULINK-ME JTAG Debugger and cables

12. QuickStart Guide (this document )

Contact your supplier if components are missing.

The kit may also include other components as NXP bundles this kit with other reference

platforms (e.g. CAN Board, DALI Solid State Lighting Board, etc). If other components are

included, see the guide associated with that platform. The guide can be found on the included

CD.

2.2. Kit Assembly

The IRD demonstration code programmed into the LPC1768 MCU enables GPIO LED

“Blinky” and provides a baseline for customers to start their LCP17xx development.

1. Connect the following boards as shown in Figure 1 (next page):

- LCD display: Connected to J_VFD

- I2C Keypad: Connected to J_KEYPAD

- External temperature sensor: Connected to J_TEMP

(Red wire to D+, White to D-)

Please read carefully the following assembly

instructions. Failure to follow these instructions

may cause the platform not to function properly.

The following instructions apply to the IRD

platform only.

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 3 of 8

Figure 1

Keypad Connection VFD/LCD Connection Temp Sensor Connection

2. Ensure that the following jumpers are in place.

Jumper Default Connection Description

JP2 Jumper connected Used for ICC measurement on IRD

platform when disconnected

JP18 Pins 1&2 connected Enables 3.3VDC from onboard

regulator

JP19 Pins 1&2 connected Enables 5.0VDC from external

Condor power supply.

J_VDISP Pin 2&3 connected Provides 5.0VDC to LCD Display

VREF Jumper connected Provides ADC/ DAC VREF

connection to the microcontroller

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 4 of 8

3. Connect the external Condor 5VDC power supply to JPWR (2.5mm plug)

VREFJVDISP JP19JP18JP2

Before moving to Step 3, make sure that ALL the

instructions described in Step 1 , Hardware

connections and Step 2 Jumper configuration

have been properly followed. Failure to follow

these instructions may cause the platform not to

function properly

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 5 of 8

4. Wait a few seconds for the system to power-up and examine the four

LEDs on the bottom left side of the base board above the 4 push button

switches. They should be blinking ON from left to right and then OFF

from left to right. By adjusting AD0 (VR1), you can adjust the rate of the

blinking LEDs.

5. The Heartbeat LED (bottom right corner of base PCB) should be blinking at a 1Hz

rate.

The following LEDs should be ON:

1. 5VPWR (Red LED located bottom middle of Base Board)

2. 3V3_PWR (Red LED located bottom middle of Base Board)

3. USB_PWR (Green LED located bottom right of Base Board)

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 6 of 8

3.0 Troubleshooting

A few common problems that can occur when operating the IRD are:

1. Hardware related issues:

The keypad and the LCD need to be correctly connected to the “Baseboard”. Refer to section

2.2 of this manual for more information

All jumpers must be configured as per section 2.2 of this manual

The keypad will not respond if the user unplugs and plugs it back in while the IRD is still

powered. When this happens, power down the board and power it up again

4.0 Information and Documents on CD’s

4.1. Documentation

The kit includes a copy of this QuickStartQuickStart Guide.

Schematics, Bill of Material, Gerber files for the Baseboard, IRD User Interface html web

pages, and training modules for the major functions of the IRD platform can be found on NXP

website:

http://www.standardics.nxp.com/support/boards/ird/

4.2. Software – Keil

The IRD LPC1768 kit software was developed using KEIL uVision3 version 3.5. Keil is

providing a 60 day, 256kB trial version for customers using the IRD kit.

To install the Keil IDE go to:

https://www.keil.com/demo/eval/arm.htm

1. Follow the instructions in the Auto-Installer window.

2. During the installation process, it is required to register the product with Keil to receive

the license key for the IDE. You will be asked to enter the PSN number provided in this

kit (label with 15 digit serial number) to register the trial version of uVision.

3. You then will receive the license key for the tool via email. This may take up to 24 hours

to process.

4.3. Software – ULINK-ME Debugger

The ULINK-ME Debugger that is included in the IRD kit allows code debugging and

programming of the LPC1768 Cortex-M3 microcontroller.

1. Connect the ULINK-ME to a PC USB port

2. Connect the JTAG connector to the JTAG port in the IRD Base Board

5.0 Software and Document Updates

Software and documentation updates are available from:

http://www.standardics.nxp.com/support/boards/ird/

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 7 of 8

6.0 Connection Headers Reference Table

The following list is a description of all the jumpers and connection headers on the IRD Baseboard

(version 1.3). Additional information can be found in the IRD schematic and User Manual

documents.

JP4 & JP5 – CAN Analyzer Connectors

Pin Label Function

1 CANH Connects CAN Analyzer to CANH signal of TJA1040

2 GND Ground connection

3 CANL Connects CAN Analyzer to CANL signal of TJA1040

CAN_Test – CAN Loopback Interface

Pin Label Function

1 CAN2-L CAN2 Channel CANL Signal

2 CAN1-L CAN1 Channel CANL Signal

3 CAN2-H CAN2 Channel CANH Signal

4 CAN1-H CAN1 Channel CANH Signal

CAN1_PWR & CAN2_PWR – CAN Slave Port Power Connectors

Pin Label Function

1 +5VDC +5VDC Power Supply From External Supply or POE Module

2 CAN-PWR Connects +5VDC to CAN Slave Unit via pin 9 of DB9 Connector

JP8 & JP10 – ISP Mode Selection

JP8 P2_10 The microcontroller is placed in ISP mode when this jumper is

connected, enabling FlashMagic to program the microcontroller.

JP10 RESET The microcontroller is held in reset for ISP programming when this

jumper is connected, enabling Flash Magic to program the

microcontroler

JP9 – UART0 DCE/DTE Selection

Pin Label Function

1 T1OUT RS-232 Serial Data Output from UART0

2 UART0 Pin2 Pin 2 of the UART0 DB9 Connector

3 UART0 Pin3 Pin 3 of the UART0 DB9 Connector

4 R1IN RS-232 Serial Data Input to UART0

JP12 – UART1 DCE/DTE Selection

Pin Label Function

1 T2OUT RS-232 Serial Data Output from UART1

2 UART1 Pin3 Pin 2 of the UART0 DB9 Connector

3 UART1 Pin2 Pin 3 of the UART0 DB9 Connector

4 R2IN RS-232 Serial Data Input to UART1

J_TEMP – External Temperature Sensor Connector

Pin Label Function

1 D- External Temperature Sensor negative (White Wire) connection

2 D+ External Temperature Sensor positive (Red Wire) connection

JP18 – 3.3VDC Source Selection

Pin Label Function

1 +3.3VDC IC13 (Onboard 3.3VDC Regulator) Output

LPC2468 IRD Kit 1.2 Quick Start Guide, rev. 1.0 Page 8 of 8

2 IRD +3.3V Supply IRD +3.3VDC Supply

3 POE_3.3V POE Connector 3.3VDC Supply

JP19 – 5.0VDC Source Selection

Pin Label Function

1 +5.0VDC JPWR +5VDC Source (from Condor External Power

Supply)

2 IRD +5.0VDC Supply IRD +5VDC Supply

3 POE_5V POE Connector 5.0VDC Supply

12V – POE 12VDC Output Connection

Pin Label Function

1 POE_12V POE Connector 12VDC supply connection

2 GND Ground connection

JP2 – IRD Current Monitor Connection

Pin Label Function

1 IRD +3.3V Supply IRD 3.3VDC Source Power

2 +3V3 3.3V IRD Supply Line

J_VDISP – IRD Display Power Source Selection

Pin Label Function

1 IRD +3V3 3.3V IRD Supply Line

2 VFD/LCD VCC VFD &LCD Display Supply Source

3 IRD +5.0VDC IRD +5VDC Supply

J_LCD – LCD Contrast Control Selection

Pin Label Function

1 V_Contrast Contrast voltage from VR2

2 LCD_Contrast LCD Contrast Voltage V0

VREF – Microcontroller VREF Selection

Pin Label Function

1 VREF ADC/DAC reference voltage signal to MCU

2 V3A Filtered 3.3v source for VREF

7.0 Support

Online technical support is available at http://www.nxp.com/support

Manuals and Datasheets: http://www.standardics.nxp.com/support/boards/ird/

The information supplied by NXP Semiconductors. is believed to be accurate and reliable, but in no event shall

NXP Semiconductors be liable for any damages whatsoever arising out of the use or inability to use the

information or any errors that may appear in this publication. The information is provided as is without any

warranties of any kind, either express or implied. NXP Semiconductors reserves the right, without notice, to

make changes to the information or to the design and specifications of its hardware and/or software products.

Products subject to availability.

NXP Semiconductors

San Jose, CA

USA

www.nxp.com

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