NXP Semiconductors JN5148 Manuale utente

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

JN-RM-2064

Revision 1.0

25-Jul-2012

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

2 © NXP Laboratories UK 2012 JN-RM-2064 v1.0

Contents

About this Manual 3

Organisation 3

Conventions 3

Acronyms and Abbreviations 3

Related Documents

JN-DS-JN5148 JN5148 Data Sheet

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

4 © NXP Laboratories UK 2012 JN-RM-2064 v1.0

1 Introduction

This manual provides a detailed reference for the JN5148 High-Power USB

Dongle, of type DR1131, supplied with JenNet-IP EK040 evaluation kit. The

dongle provides a platform for hardware development environment for wireless

microcontroller applications with a USB interface.

1.1 Features

The dongle has the following features:

JN5148-J01 device (mounted directly on the board)

Integrated PCB antenna

High-power capability

NXP LPC1343 USB interface and connector (interface chip is connected to

UART0 of the JN5148-J01 device)

Two LEDs (one red and one green)

This dongle is a high-power device with a radio transmission capability similar to

the high-power modules provided in the JenNet-IP EK040 evaluation kit.

1.2 Reference Design

A reference design (JN-RD-6034) for the JN5148 High-Power USB Dongle is

available from www.nxp.com/jennic/support. The reference design comprises a

ZIP file containing the following files:

This Reference Manual

The schematic diagram for the board

The BOM (Bill Of Materials) for the board

Gerbers for the board

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

JN-RM-2064 v1.0 © NXP Laboratories UK 2012 5

2 Hardware Overview

2.1 Dongle Layout

19mm

45mm

USB

JN5148

LEDS HP Front End

LPC1343 Antenna

SPI Flash

LPC1343 Config

Connector

Figure 1: DR1131 Board Layout

2.2 Dongle Block Diagram

Timers

UART

12-bit ADC,

comparators

12-bit DACs,

temp sensor

SPI

RAM

128kB

128-bit AES

Encryption

Accelerator

2.4GHz

Radio

ROM

128kB

RISC CPU

Power

Management

XTAL

32.768 kHz

O-QPSK

Modem

IEEE802.15.4

MAC

Accelerator

512kB

Serial Flash

Memory

JN5148 chip

Integrated Antenna

32kHz ext Xtal

Sleep Counters

32-byte

OTP eFuse

Watchdog timer

Time of Flight

Engine

USB

LPC1343

Micro

XTAL

32 MHz

XTAL

12 MHz

SE2431L Matching

2.3 LPC1343 Device

The LPC1343 device is connected to the USB connector and acts as an

interface between the PC and the JN5148 device. The LPC1343 will enumerate

on the PC as two devices:

1. A mass storage device used to program the Flash device for the JN5148

2. A virtual COM port connected directly to UART0 on the JN5148

2.4 JN5148 Device

The JN5148 circuit is based around the standard JN5148 reference design.

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

6 © NXP Laboratories UK 2012 JN-RM-2064 v1.0

2.5 High-Power Front-End

The front-end is a Skyworks SE2431L. This means that the dongle can achieve

22dBm output power and Rx sensitivity of -100dBm. The output of the front-end

is connected to a printed antenna.

2.6 LNA Bypass

If the dongle is used in the presence of very strong signals, such as Wi-Fi, then

there will be a performance improvement by switching off the Low-Noise

Amplifier (LNA) in the front-end to stop the input stage of the JN5148 device from

being overloaded with other signals. The LNA can be bypassed using DIO1 -

driving DIO1 low will bypass the LNA.

2.7 LEDs

The two LEDs are connected back-to-back between DIOs 16 and 17.

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

JN-RM-2064 v1.0 © NXP Laboratories UK 2012 7

3 Programming the LPC1343 Device

The LPC1343 device is supplied pre-programmed on all USB dongles. You

should never need to reprogram the firmware in the LPC1343 device when

developing applications for the JN5148 device.

If you are producing new USB dongles or are developing new ways to

communicate with the JN5148 device (i.e. new HID classes) then the mechanism

for reprogramming the LPC1343 is as follows.

1. Insert the USB dongle into the PC with pins 2 and 6 of J4 connected

together.

2. Wait up to 30 seconds. The dongle will now appear in Windows Explorer

as a mass storage device with the title ‘CRP DISABLD’:

3. Rename your new binary FIRMWARE.BIN.

4. ‘Drag and drop’ or ‘copy and paste’ the new binary file onto the USB

dongle.

5. Remove the USB dongle from the PC and re-insert it, this time with J4 pins

2 and 6 not connected together.

Two pre-compiled binaries are available in the JN-RD-6034 reference design.

These are:

LPC1343_Firmware_0x10.bin: This binary should be used for devices

that store their MAC address at address 0x10, such as the JN5148-J01

and JN5142-J01.

LPC1343_Firmware_0x30.bin: This binary should be used for devices

that store their MAC address at address 0x30, such as the JN5148-001.

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

8 © NXP Laboratories UK 2012 JN-RM-2064 v1.0

4 Programming the JN5148 Device

4.1 Re-programming USB Dongles

You can easily re-programme a dongle with another binary file through a USB

port of your PC and the LPC1343 device on the dongle. The replacement binary

file must be a specially prepared file called FIRMWARE.BIN. When this file is

copied onto the mass storage device, the LPC1343 device holds the JN5148

device in reset and then programs the SPI Flash device directly, releasing the

reset once programming is complete. The LPC1343 device will also check the

MAC address in the SPI Flash device and preserve it though re-programming

operations if a new MAC address has not been specified in the new

FIRMWARE.BIN file.

4.2 Preparing the Binary File

Before a custom application binary file can be programmed into the USB dongle,

a utility called jn514x_firmware.exe must be run on the file to strip out a 4-byte

header. This utility is provided in the JenNet-IP SDK (JN-SW-4051) and is

located as follows:

C:/Jennic/Tools/NXP_USBDongle/jn514x_firmware.exe

The utility can be run from a bash shell using the following command:

/cygdrive/c/Jennic/Tools/NXP_USBDongle/jn514x_firmware.exe

with the following options:

-f is used to specify the name of the input file

-m is used to specify the IEEE/MAC address of the target device (: separated)

-c is used to specify the target chip type (in this case, should be JN5148J01)

Therefore, the required usage is:

.../jn514x_firmware.exe -f <app path/name> -m <MacAddress>

-c JN5148J01

4.3 Programming the Dongle

This re-programming of the dongle uses a simple ‘drag and drop’ method within

Windows Explorer, as follows:

1. Plug the USB dongle into a free USB port of your PC (if an ‘Installing driver’

message is displayed, refer to Section 4.4 below).

2. Open Windows Explorer - the dongle should appear as ‘Jennic_USB’.

3. If the dongle currently contains any files, delete them.

4. Within Windows Explorer, navigate to the new FIRMWARE.BIN file on your

PC, then ‘drag and drop’ or ‘copy and paste’ the new binary file onto the

USB dongle.

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

JN-RM-2064 v1.0 © NXP Laboratories UK 2012 9

4.4 Installing Device Driver for USB Dongle

1. The first time you plug the dongle into a USB port of your PC, an ‘Installing

driver’ message appears in the bottom-right corner of the screen. The

system will install most of the software required, but will leave the following

box:

2. Close the box and go to Start > Control Panel > System > Device

Manager. In the Device Manager, you will notice that the VCOM port is

accompanied by an exclamation mark:

3. Right-click on the VCOM port and from the context menu select 'Update

driver software..' and then select the manual installation method (bottom

option).

4. Use the Update Driver Software browser to navigate down to the folder

C:\Jennic\Tools\NXP_USBDongle\Drivers and then click Next.

The system will now install the software driver.

JN5148 High-Power USB Dongle (DR1131)

Reference Manual

10 © NXP Laboratories UK 2012 JN-RM-2064 v1.0

5. You can check that the device driver has installed correctly as if it has, the

device NXP LPC1343 will appear in the Ports (COM & LPT) section and

will appear as a USB mass storage device in the USB Controllers section.

Your dongle is now ready to use.

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