Texas Instruments CC2540 Manual de usuario

Bluetooth® Low Energy

CC2540 Mini Development Kit

User’s Guide

Document Number: SWRU270

Document Version: 1.0

Development Kit Part Number: CC2540DK-MINI

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TABLE OF CONTENTS

1. REFERENCES................................................................................................................................ 3

1.1 PRINTED COPY INCLUDED IN THE BOX WITH THE KIT ................................................................... 3

1.2 INCLUDED WITH TEXAS INSTRUMENTS BLUETOOTH LOW ENERGY SOFTWARE INSTALLER .............. 3

1.3 AVAILABLE FROM BLUETOOTH SPECIAL INTEREST GROUP (SIG) ................................................... 3

2. INTRODUCTION........................................................................................................................... 4

2.1 KIT CONTENTS OVERVIEW.......................................................................................................... 4

2.1.1 Hardware........................................................................................................................... 4

2.2 SYSTEM REQUIREMENTS ............................................................................................................. 4

3. GETTING STARTED .................................................................................................................... 6

3.1 ASSOCIATE DRIVER WITH USB DONGLE ...................................................................................... 6

3.2 DETERMINING THE COM PORT ................................................................................................... 7

4. USING BTOOL .............................................................................................................................. 9

4.1 STARTING THE APPLICATION....................................................................................................... 9

4.2 CREATING A BLE CONNECTION BETWEEN USB DONGLE AND KEYFOB ....................................... 10

4.2.1 Making the Keyfob Discoverable ..................................................................................... 10

4.2.2 Scanning for Devices ....................................................................................................... 11

4.2.3 Selecting Connection Parameters .................................................................................... 12

4.2.4 Establishing a Connection ............................................................................................... 12

4.3 USING THE SIMPLE GATT PROFILE ........................................................................................... 13

4.3.1 Reading a Characteristic Value by UUID ........................................................................ 14

4.3.2 Writing a Characteristic Value ........................................................................................ 15

4.3.3 Reading a Characteristic Value by Handle ...................................................................... 16

4.3.4 Discovering a Characteristic by UUID ............................................................................ 16

4.3.5 Reading Multiple Characteristic Values........................................................................... 17

4.3.6 Enabling Notifications..................................................................................................... 18

4.4 USING THE SIMPLE KEYS GATT PROFILE .................................................................................. 19

5. PROGRAMMING / DEBUGGING THE CC2540 ...................................................................... 21

5.1 HARDWARE SETUP FOR KEYFOB................................................................................................ 21

5.2 HARDWARE SETUP FOR USB DONGLE........................................................................................ 22

5.3 USING SMARTRF FLASH PROGRAMMER SOFTWARE.................................................................... 24

5.3.1 Checking the CC Debugger Firmware ............................................................................. 24

5.3.2 Reading or Writing a Hex File to the CC2540 ................................................................. 25

5.3.3 Reading or Writing the CC2540 Device Address.............................................................. 26

6. GENERAL INFORMATION ....................................................................................................... 28

6.1 DOCUMENT HISTORY................................................................................................................ 28

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1. References

The following references provide additional information on the CC2540, the Texas Instruments

Bluetooth® low energy (BLE) stack, and the BLE specification in general. (All path and file references in

this document assume that the BLE development kit software has been installed to the default path

C:\Texas Instruments\BLE-CC2540\)

1.1 Printed Copy Included in the Box with the Kit

[1] CC2540 Mini Development Kit Quick Start Guide (SWRU272)

1.2 Included with Texas Instruments Bluetooth Low Energy Software Installer

(The software installer is available for download at http://www.ti.com/blestack)

[2] Texas Instruments Bluetooth® Low Energy Software Developer’s Guide (SWRU271)

C:\Texas Instruments\BLE-CC2540\Documents\TI_BLE_Software_Developer's_Guide.pdf

[3] TI BLE Vendor Specific HCI Reference Guide

C:\Texas Instruments\BLE-CC2540\Documents\TI_BLE_Vendor_Specific_HCI_Guide.pdf

1.3 Available from Bluetooth Special Interest Group (SIG)

[4] Specification of the Bluetooth System, Covered Core Package version: 4.0 (30-June-2010)

https://www.bluetooth.org/technical/specifications/adopted.htm

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2. Introduction

Thank you for purchasing the Texas Instruments (TI) Bluetooth® low energy (BLE) CC2540 Mini

Development Kit (CC2540DK-MINI). The purpose of this document is to give an overview of the

hardware and software contained in the CC2540DK-MINI.

The information in this guide will get you up and running with the kit; however for more detailed

information on BLE technology and the CC2540 BLE protocol stack, please consult [2].

2.1 Kit Contents Overview

The CC2540DK-MINI kit is composed of hardware and software, with details on both in the sections

below.

2.1.1 Hardware

The kit contains the following hardware components:

1 CC2540 USB Dongle

This is the device that will be acting as the BLE Master. It connects to a Windows PC’s USB port, and is

pre-loaded with the master demo application software.

1 CC2540 “Keyfob”

This is the device that will be acting as the BLE Slave. The PCB sits inside a plastic case, and can be

removed with a small Philips screwdriver. It operates on a single CR2032 coin cell battery, and contains a

two-colored LED, a buzzer, an accelerometer, and two buttons.

1 CC Debugger with mini USB cable, converter board, and a 10-pin connector cables

This is used to flash the software onto both the USB dongle as well as the keyfob. It also can be used for

debugging software using IAR Embedded Workbench.

Figure 1 – Hardware Included with CC2540DK-MINI

2.2 System Requirements

To use the CC2540 software, a PC running Microsoft Windows (XP or later; 32-bit support only) is

required, as well as Microsoft .NET Framework 3.5 Service Pack 1 (SP1) or greater.

In order to check whether your system has the appropriate .NET Framework, open up the Windows

Control Panel, and select “Add or Remove Programs”. Amongst the list of currently installed programs,

you should see “Microsoft .NET Framework 3.5 SP1”, as such:

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Figure 2

If you do not see it in the list, you can download the framework from Microsoft.

From a hardware standpoint, the Windows PC must contain one free USB port. An additional free USB

port is required in order to use the CC Debugger and the USB Dongle simultaneously.

IAR Embedded Workbench for 8051 development environment is required in order to make changes to

the keyfob software. More information on IAR can be found in [1].

For the keyfob, a small Philips screwdriver (not included in the kit) is required to open up the plastic case,

and a CR2032 coin cell battery (included in the kit) is required for power.

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3. Getting Started

This section describes how to set up the software and get started with the CC2540 Mini Development Kit.

It is assumed that the instructions found in [1] (a printed copy of the quick start guide is included with the

kit) have already been completed, with both the keyfob and the dongle having been programmed with the

latest hex files. In addition, this section assumes that the latest version of the CC2540 BLE software (v1.0

as of the release of this document) has been installed. The latest BLE software can be downloaded at

www.ti.com/blestack.

3.1 Associate Driver with USB Dongle

After the software installation is complete, the USB Dongle driver must be associated with the device in

order to use the demo application. To associate the USB Dongle driver, first you must connect the USB

Dongle to the PC’s USB port, or to a USB hub that connects to the PC.

The first time that the dongle is connected to the PC, a message will pop-up, indicating that Windows

does not recognize the device.

Figure 3

When prompted whether to use Windows Update search for software, select “No, not this time” and press

the “Next” button. On the next screen, select the option “Install from a list or specific location

(Advanced)”, and press the “Next” button:

Figure 4

On the next screen, click the checkbox labeled “Include this location in the search:”, and click the

“Browse” button. Select the following directory (assuming the default installation path was used):

C:\Texas Instruments\BLE-CC2540\Accessories\Drivers

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Figure 5

Click the “Next” button. This should install the driver. It will take a few seconds for the file to load. If the

installation was successful, you should see the screen to the below. Click the “Finish” button to complete

the installation.

Figure 6

3.2 Determining the COM Port

Once the driver is installed, you need to determine which COM port Windows has assigned to the USB

Dongle. After you have completed the USB Dongle driver association in section 3.1, right-click on the

“My Computer” icon on your desktop and select “Properties”:

Figure 7

The “System Properties” window should open up. Under the “Hardware” tab, select “Device Manager”:

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Figure 8

A list of all hardware devices should appear. Under the section “Ports (COM & LPT)”, the device “TI

CC2540 Low-Power RF to USB CDC Serial Port” should appear. Next to the name should be the port

number (for example, COM15 in the image below):

Figure 9

Take note of this port number, as it will be needed in order to use BTool. You may close the device

manager at this point.

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4. Using BTool

BTool is a PC Application that allows a user to form a connection between two BLE devices. BTool works

by communicating with the CC2540 by means of HCI vendor specific commands. The USB Dongle

software (when running the HostTestRelease project) and driver create a virtual serial port over the USB

interface. BTool, running on the PC, communicates with the USB Dongle through this virtual serial port.

More information on the HCI interface, as well as details on the HCI vendor specific commands that are

used by the CC2540, can be found in [3].

4.1 Starting the Application

To start the application go into your programs by choosing Start > Programs > Texas Instruments >

Bluetooth-LE > BTool. You should see the following window open up:

Figure 10

In the upper left corner of the window, click the “Device” drop menu and select the option “New Device”:

Figure 11

The following window should pop-up:

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Figure 12

If using the USB Dongle, set the “Port” value to the COM port of the USB Dongle from step 1. For the

other settings, use the default values as shown in Figure 12. Press “OK” to connect to the board. The

following screen will appear:

Figure 13

This screen indicates that you are now connected to the USB Dongle. The screen is divided up into a few

sections: the left sidebar contains information on the USB Dongle’s status. The left side of the sub-

window contains a log of all messages sent from the PC to the dongle and received by the PC from the

dongle. The right side of the sub-window contains a GUI for control of the USB Dongle.

4.2 Creating a BLE Connection between USB Dongle and Keyfob

At this point the USB Dongle (central) is ready to discover other BLE devices that are advertising. At this

time you will want to insert the battery (or remove and re-insert the battery to reset the device) into the

keyfob (peripheral).

4.2.1 Making the Keyfob Discoverable

When the keyfob powers up, it will not immediately go into a discoverable state. To enable advertising

and make the keyfob discoverable, press the right-hand button on the keyfob once. This will turn

advertisements on; making the device discoverable for 30 seconds (this value is defined in [4]). After that

time, the device will return to standby mode. To make the device discoverable again, simply press the

button once again.

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